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  • Node js server not responding outside localhost centos

    - by David Martinez
    I'm running a basic express server from CentOS but for some reason it is not responding outside of localhost, I have tried everything I have found on google but nothing works so far. This is my express server: app.listen(3000,"0.0.0.0"); If I do curl http://localhost:3000/ in the server it works fine. If I curl to the ip of the server it doesn't work. I already changed my iptables num target prot opt source destination 1 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:80 2 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:80 3 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:3000 There is currently a apache server running on port 80 with no problems. I also tried setting a VirtualHost on apache but it didn't work either: <VirtualHost *:80> ServerName SubDOmain.MyDomain.com ProxyRequests off <Proxy *> Order allow,deny Allow from all </Proxy> ProxyPass / http://localhost:3000/ ProxyPassReverse / http://localhost:3000/ ProxyPreserveHost on </VirtualHost> There is another virtual host working fine that redirects to another DocumentRoot. I'm running Node on root for testing purpose, but the node application owner is another user. All folders have 705 and files 664 Edit: I stopped apache and run my node app on port 80 and it working fine, I could access node app from my ip and domain.

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  • Lots of strange IP addresses in my Windows Firewall logs. Concern?

    - by gmoore
    Was trying to debug a Samba sharing issue with Mac OS X so I turned on logging for my Windows Firewall. I didn't expect a lot of conections but the thing filled up quickly. Here's a sample: 2009-12-21 08:49:32 OPEN-INBOUND TCP 192.168.0.4 192.168.0.3 56335 139 - - - - - - - - - 2009-12-21 08:49:33 OPEN-INBOUND TCP 192.168.0.4 192.168.0.3 56337 139 - - - - - - - - - 2009-12-21 08:50:02 OPEN UDP 192.168.0.3 68.87.73.242 1389 53 - - - - - - - - - 2009-12-21 08:50:02 CLOSE TCP 192.168.0.3 212.96.161.238 1391 80 - - - - - - - - - 2009-12-21 08:50:02 OPEN UDP 192.168.0.3 68.87.71.226 60290 53 - - - - - - - - - 2009-12-21 08:50:02 OPEN TCP 192.168.0.3 212.96.161.238 1391 80 - - - - - - - - - 2009-12-21 08:50:02 OPEN TCP 192.168.0.3 212.96.161.238 1393 80 - - - - - - - - - 2009-12-21 08:50:04 CLOSE TCP 192.168.0.3 212.96.161.238 1393 80 - - - - - - - - - 2009-12-21 08:50:41 CLOSE UDP 192.168.0.3 192.168.0.4 137 50300 - - - - - - - - - I can pick out the local IP addresses (192.168.0.3 is my Windows XP machine, 192.169.0.4 is Mac OS X) as I debug the Samba issue. But some of the others resolve to Comcast (my ISP) and others resolve to weird hosts like van-dns.com and navisite.net. It doesn't look like any connection sent/received any bytes. I used the reference here: http://technet.microsoft.com/en-us/library/cc758040%28WS.10%29.aspx. Is it a cause for concern?

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  • Can I use iptables on my Varnish server to forward HTTPS traffic to a specific server?

    - by Dylan Beattie
    We use Varnish as our front-end web cache and load balancer, so we have a Linux server in our development environment, running Varnish with some basic caching and load-balancing rules across a pair of Windows 2008 IIS web servers. We have a wildcard DNS rule that points *.development at this Varnish box, so we can browse http://www.mysite.com.development, http://www.othersite.com.development, etc. The problem is that since Varnish can't handle HTTPS traffic, we can't access https://www.mysite.com.development/ For dev/testing, we don't need any acceleration or load-balancing - all I need is to tell this box to act as a dumb proxy and forward any incoming requests on port 443 to a specific IIS server. I suspect iptables may offer a solution but it's been a long while since I wrote an iptables rule. Some initial hacking has got me as far as iptables -F iptables -A INPUT -p tcp -m tcp --sport 443 -j ACCEPT iptables -A OUTPUT -p tcp -m tcp --dport 443 -j ACCEPT iptables -t nat -A PREROUTING -p tcp --dport 443 -j DNAT --to 10.0.0.241:443 iptables -t nat -A POSTROUTING -p tcp -d 10.0.0.241 --dport 443 -j MASQUERADE iptables -A INPUT -j LOG --log-level 4 --log-prefix 'PreRouting ' iptables -A OUTPUT -j LOG --log-level 4 --log-prefix 'PostRouting ' iptables-save > /etc/iptables.rules (where 10.0.0.241 is the IIS box hosting the HTTPS website), but this doesn't appear to be working. To clarify - I realize there's security implications about HTTPS proxying/caching - all I'm looking for is completely transparent IP traffic forwarding. I don't need to decrypt, cache or inspect any of the packets; I just want anything on port 443 to flow through the Linux box to the IIS box behind it as though the Linux box wasn't even there. Any help gratefully received... EDIT: Included full iptables config script.

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  • IPTables configuration help

    - by Sam
    I'm after some help with setting up IPTables. Mostly the configuration is working, but regardless of what I try I cannot allow localhost to access the local Apache only (i.e. localhost to access localhost:80 only). Here is my script: !/bin/bash Allow root to access external web and ftp iptables -t filter -A OUTPUT -p tcp --dport 21 --match owner --uid-owner 0 -j ACCEPT iptables -t filter -A OUTPUT -p tcp --dport 80 --match owner --uid-owner 0 -j ACCEPT Allow DNS queries iptables -A OUTPUT -p udp --dport 53 -j ACCEPT iptables -A OUTPUT -p tcp --dport 53 -j ACCEPT Allow in and outbound SSH to/from any server iptables -A INPUT -p tcp -s 0/0 --dport 22 -j ACCEPT iptables -A OUTPUT -p tcp -d 0/0 --sport 22 -j ACCEPT Accept ICMP requests iptables -A INPUT -p icmp -s 0/0 -j ACCEPT iptables -A OUTPUT -p icmp -d 0/0 -j ACCEPT Accept connections from any local machines but disallow localhost access to networked machines iptables -A INPUT -s 10.0.1.0/24 -j ACCEPT iptables -A OUTPUT -d 10.0.1.0/24 -j DROP Drop ALL other traffic iptables -A OUTPUT -p tcp -d 0/0 -j DROP iptables -A OUTPUT -p udp -d 0/0 -j DROP Now I have tried many permutations and I'm obviously missing everything. I place them above the in/out bound SSH to/from, so it's not the precedence order. If someone could give me the heads up on allowing only the local machine to access the local web server, that'd be great. Cheers guys.

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  • ip6tables blocking output traffic

    - by jmccrohan
    My OpenVZ VPS is blocking outbound IPv6 traffic, but correctly filtering inbound IPv6 traffic. Below is my ip6tables-restore script. *filter :INPUT ACCEPT [0:0] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [0:0] -A INPUT -i lo -j ACCEPT -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT -A INPUT -p ipv6-icmp -j ACCEPT -A INPUT -p tcp -m tcp --dport 22 -j ACCEPT -A INPUT -p tcp -m tcp --dport 80 -j ACCEPT -A INPUT -p udp -m udp --dport 1194 -j ACCEPT -A INPUT -p tcp -m tcp --dport 51413 -j ACCEPT -A INPUT -p udp -m udp --dport 51413 -j ACCEPT -A INPUT -m limit --limit 5/min -A INPUT -j REJECT --reject-with icmp6-adm-prohibited -A FORWARD -j ACCEPT -A OUTPUT -j ACCEPT COMMIT ICMPv6 traffic is still able to pass both inbound and outbound. When I flush these rules using -F, outbound traffic flows fine. What am I missing here? EDIT: It appears that ip6tables is marking ESTABLISHED packets as INVALID. Consequently, the outbound traffic is NOT actually being blocked. The reply packets are not allowed inbound again, hence appearing like blocked outbound traffic. Allowing INVALID packets inbound solves the outbound issue, but also renders the inbound filter useless.

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  • nginx php5-fpm "File not found" -- FastCGI sent in stderr: "Primary script unknown"

    - by jmfayard
    so I'm trying to run for the first time the nginx web server with php5-fpm on a debian wheezy server Hitting a php file display simply File not found I have done my research (waste a lot of hours actually ;), there are a lot of people that have similar problems, yet I didn't succeed to correct it with what worked for them. I still have the same error : $ tail /var/log/nginx/access.log /var/log/nginx/error.log /var/log/php5-fpm.log | less == /var/log/nginx/error.log <== 2013/10/26 21:36:00 [error] 6900#0: *1971 FastCGI sent in stderr: "Primary script unknown" while reading response header from upstream, I have tried a lot of things, it's hard to remember what. I have put my config files on github my /etc/nginx/nginx.conf my /etc/php5/fpm/php-fpm.conf Currently, the nginx.conf configuration uses this... server { server_name mydomain.tld; root /srv/data1/test; location ~ \.php$ { try_files $uri =404; fastcgi_pass 127.0.0.1:9000; fastcgi_index index.php; fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; include fastcgi_params; } } /etc/php5/fpm/pool.d/www.conf contains listen = 127.0.0.1:9000 I have tried the unix socket version, same thing. fastcgi_pass unix:/var/run/php5-fpm.sock; I made sure the server is started $ netstat -alnp | grep LISTEN tcp 0 0 127.0.0.1:9000 0.0.0.0:* LISTEN 6913/php-fpm.conf) tcp 0 0 127.0.0.1:3306 0.0.0.0:* LISTEN 4785/mysqld tcp 0 0 0.0.0.0:842 0.0.0.0:* LISTEN 2286/inetd tcp 0 0 0.0.0.0:111 0.0.0.0:* LISTEN 2812/rpcbind tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 5710/nginx tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 2560/sshd tcp 0 0 0.0.0.0:443 0.0.0.0:* LISTEN 5710/nginx tcp6 0 0 :::111 :::* LISTEN 2812/rpcbind unix 2 [ ACC ] STREAM LISTENING 323648 6574/tmux /tmp//tmux-1000/default unix 2 [ ACC ] STREAM LISTENING 619072 6790/fcgiwrap /var/run/fcgiwrap.socket unix 2 [ ACC ] SEQPACKET LISTENING 323 464/udevd /run/udev/control unix 2 [ ACC ] STREAM LISTENING 610686 2812/rpcbind /var/run/rpcbind.sock unix 2 [ ACC ] STREAM LISTENING 318633 4785/mysqld /var/run/mysqld/mysqld.sock Each time I modify the nginx.conf file, I make sure to relaunch this command nginx -t && nginx -s reload && echo "nginx configuration reloaded" and same thing for php5-fpm /etc/init.d/php5-fpm restart Thanks for your help :-)

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  • My current iptable configuration doesn't work [on hold]

    - by Brad
    sudo chkconfig iptables off /etc/init.d/iptables on ### Clear/flush iptables sudo iptables -F sudo iptables -P INPUT ACCEPT sudo iptables -P OUTPUT ACCEPT sudo iptables -P FORWARD ACCEPT ### Allow SSH iptables -A INPUT -i eth0 -p tcp --dport 22 -m state --state NEW,ESTABLISHED -j ACCEPT iptables -A OUTPUT -o eth0 -p tcp --sport 22 -m state --state ESTABLISHED -j ACCEPT ### Allow YUM updates sudo iptables -A OUTPUT -o eth0 -p tcp --dport 80 --match owner --uid-owner 0 --state NEW,ESTABLISHED -j ACCEPT sudo iptables -A OUTPUT -o eth0 -p tcp --dport 443 --match owner --uid-owner 0 --state NEW,ESTABLISHED -j ACCEPT ### Add your rules form the link above, here # ftp,smtp,imap,http,https,pop3,imaps,pop3s sudo iptables -A INPUT -i eth0 -p tcp -m multiport --dports 21,25,143,80,443,110,993,995 -m state --state NEW,ESTABLISHED -j ACCEPT sudo iptables -A OUTPUT -o eth0 -p tcp -m multiport --sports 21,25,143,80,110,443,993,995 -m state --state NEW,ESTABLISHED -j ACCEPT ## allow dns sudo iptables -A OUTPUT -p udp -o eth0 --dport 53 -j ACCEPT && sudo iptables -A INPUT -p udp -i eth0 --sport 53 -j ACCEPT # handling pings sudo iptables -A INPUT -p icmp --icmp-type echo-request -j ACCEPT && sudo iptables -A OUTPUT -p icmp --icmp-type echo-reply -j ACCEPT sudo iptables -A OUTPUT -p icmp --icmp-type echo-request -j ACCEPT && sudo iptables -A INPUT -p icmp --icmp-type echo-reply -j ACCEPT # manage ddos attacks sudo iptables -A INPUT -p tcp --dport 80 -m limit --limit 25/minute --limit-burst 100 -j ACCEPT ## Implement some logging so that we know what's getting dropped sudo iptables -N LOGGING sudo iptables -A INPUT -j LOGGING sudo iptables -A LOGGING -m limit --limit 2/min -j LOG --log-prefix "IPTables Packet Dropped: " --log-level 7 sudo iptables -A LOGGING -j DROP # once a rule affects traffic then it is no longer managed # so if the traffic has not been accepted, block it sudo iptables -A INPUT -j DROP sudo iptables -I INPUT 1 -i lo -j ACCEPT sudo iptables -A OUTPUT -j DROP # allow only internal port forwarding sudo iptables -A FORWARD -i eth0 -o eth1 -j ACCEPT sudo iptables -P FORWARD DROP # create an iptables config file sudo iptables-save > /root/dsl.fw ### Append the following to the rc.local file sudo nano /etc/rc.local ####--- /sbin/iptables-restore < sudo /root/dsl.fw ####--- /etc/init.d/iptables save ## check to see if this setting is working great. sudo service iptables restart ## log out/in testing sudo chkconfig iptables on What is the problem with this setup? If I restart the server it doesn't allow me back in SSH, and there may be a problem with Yum Original source of information: https://gist.github.com/Jonathonbyrd/1274837#file-instructions

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  • Lync 2010, Kamailio, & Trixbox 2.6.23 (Asterisk 1.4)

    - by slashp
    I'm having an issue trying to connect Lync 2010 phone calls with our trixbox PBX. I've gotten to the point where Kamailio seems to be functioning properly and acting as a bridge between TCP traffic (from Lync) & UDP traffic (to the trixbox, as Asterisk 1.4 does not support SIP over TCP). Our Lync box IP: 10.100.10.41 Our Kamailio box IP: 10.100.10.44 Our trixbox IP: 10.100.10.2 The issue I'm running into is as follows when enabling SIP debugging for the Kamailio box: <--- SIP read from 10.100.10.44:5060 ---> PRACK sip:TNECLTSLY01.contoso.com:5068;transport=Tcp;maddr=10.100.10.41 SIP/2.0 FROM: <sip:9121;[email protected];user=phone>;epid=CF2380792B;tag=4852bab430 TO: <sip:[email protected];user=phone>;epid=CF2380792B;tag=3684a6a24e CSEQ: 24 PRACK CALL-ID: 192daae6-00e1-4140-bddd-0394b35d475b MAX-FORWARDS: 70 Via: SIP/2.0/UDP 10.100.10.44;branch=z9hG4bKcydzigwkX;i=d VIA: SIP/2.0/TCP 10.100.10.41:51677;branch=z9hG4bK159fc989 CONTACT: <sip:TNECLTSLY01.contoso.com:5068;transport=Tcp;maddr=10.100.10.41> CONTENT-LENGTH: 0 USER-AGENT: RTCC/4.0.0.0 MediationServer RAck: 1 23 INVITE <-------------> --- (12 headers 0 lines) --- Sending to 10.100.10.44 : 5060 (NAT) <--- Transmitting (NAT) to 10.100.10.44:5060 ---> SIP/2.0 481 Call leg/transaction does not exist Via: SIP/2.0/UDP 10.100.10.44;branch=z9hG4bKcydzigwkX;i=d;received=10.100.10.44 Via: SIP/2.0/TCP 10.100.10.41:51677;branch=z9hG4bK159fc989 From: <sip:9121;[email protected];user=phone>;epid=CF2380792B;tag=4852bab430 To: <sip:[email protected];user=phone>;epid=CF2380792B;tag=3684a6a24e Call-ID: 192daae6-00e1-4140-bddd-0394b35d475b CSeq: 24 PRACK User-Agent: Asterisk PBX Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY Supported: replaces Content-Length: 0 <------------> trixbox1*CLI> <--- SIP read from 10.100.10.44:5060 ---> ACK sip:[email protected];user=phone SIP/2.0 FROM: "John Jones"<sip:9121;[email protected];user=phone>;tag=4852bab430;epid=CF2380792B TO: <sip:[email protected];user=phone>;tag=3684a6a24e;epid=CF2380792B CSEQ: 23 ACK CALL-ID: 192daae6-00e1-4140-bddd-0394b35d475b MAX-FORWARDS: 70 Via: SIP/2.0/UDP 10.100.10.44;branch=z9hG4bKcydzigwkX;i=d VIA: SIP/2.0/TCP 10.100.10.41:51677;branch=z9hG4bK79a21c CONTENT-LENGTH: 0 My SIP trunk on the trixbox looks like this: [from-lync] exten => _+4XXX!,1,Noop(Stripping + from start of number) exten => _+4XXX!,n,Goto(from-internal,${EXTEN:1}) Though I am still having no luck getting the + stripped or the call to go through. Any ideas would be greatly appreciated. Thank you! -slashp

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  • ASA5505 Novice. Setting up Outside/Inside/and DMZ as Guest Network

    - by GriffJ
    I need a little help in developing a config for our ASA5505. I'm an MCSA/MCITPAS but I don't have a lot of practical cisco experience. Here is what I need help with, we currently have a PIX as our boarder gateway and well it's antiquated and it only has a 50 user license which means I'm constantly clearing local-host throughout the day as people complain. I discovered that the last IT person bought at couple ASA5505s and they've been sitting in the back of a cupboard. So far I've duplicated the configuration from the pix to the asa but as I was going to be going this far I thought I'd go further and remove another old cisco router that was used only for the guest network, I know the asa can do both jobs. So I'm going to paste a scenario I wrote up with the actual IPs changed to protect the innocent. ... Outside Network: 1.2.3.10 255.255.255.248 (we have a /29) Inside Network: 10.10.36.0 255.255.252.0 DMZ Network: 192.168.15.0 255.255.255.0 Outside Network on e0/0 DMZ Network on e0/1 Inside Network on e0/2-7 DMZ Network has DHCPD Enabled. DMZ DHCPD Pool is 192.168.15.50-192.168.15.250 DMZ Network needs to be able to see DNS on Inside Network at 10.10.37.11 and 10.10.37.12 DMZ Network needs to be able to access webmail on inside network at 10.10.37.15 DMZ Network needs to be able to access business website on inside network at 10.10.37.17 DMZ Network needs to be able to access the outside network (access to the internet). Inside Network has NO DHCPD. (dhcp is handled by domain controller) Inside Network needs to be able to see anything on the DMZ network. Inside Network needs to be able to access the outside network (access to the internet). There is some access-list stuff already, some static mapping already. Maps external IPs from our ISP to our inside server IPs static (inside,outside) 1.2.3.11 10.10.37.15 netmask 255.255.255.255 static (inside,outside) 1.2.3.12 10.10.37.17 netmask 255.255.255.255 static (inside,outside) 1.2.3.13 10.10.37.20 netmask 255.255.255.255 Allows access to our Webserver/Mailserver/VPN from the Outside. access-list 108 permit tcp any host 1.2.3.11 eq https access-list 108 permit tcp any host 1.2.3.11 eq smtp access-list 108 permit tcp any host 1.2.3.11 eq 993 access-list 108 permit tcp any host 1.2.3.11 eq 465 access-list 108 permit tcp any host 1.2.3.12 eq www access-list 108 permit tcp any host 1.2.3.12 eq https access-list 108 permit tcp any host 1.2.3.13 eq pptp Here is all the NAT and route stuff I have so far. global (outside) 1 interface global (outside) 2 1.2.3.11-1.2.3.14 netmask 255.255.255.248 nat (inside) 1 0.0.0.0 0.0.0.0 nat (dmz) 1 0.0.0.0 0.0.0.0 route outside 0.0.0.0 0.0.0.0 1.2.3.9 1

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  • How to get ISA 2006 Web Proxy to work with the Single Network Adapter template

    - by tronda
    I need to test an issue with running our application behind a proxy server with different type of configurations, so I installed ISA 2006 Enterprise on a desktop computer. Since this computer only has a single network card and I want to start out easy, I chose the "Single Network Adapter" template. We have a internal NAT'ed network which is in the 10 range. I have defined the internal network on the ISA server to be 10.XXX.YY.1 - 10.XXX.YY.255 I also have the Default rule which denies all traffic, but I've added the following Rule: Policy - Protocols - From - To Accept HTTP Internal External HTTPS Local Host Internal HTTS Server Localhost Then I configured Internet Explorer on a virutal machine running XP within virtualbox with Brigded network (gets same network address range as regular computers on our network) similar to this Instead of the server name I used the IP address. When I try to access a web page, this doesn't go through and I get the following log messages on the proxy server: Original Client IP Client Agent Authenticated Client Service Referring Server Destination Host Name Transport HTTP Method MIME Type Object Source Source Proxy Destination Proxy Bidirectional Client Host Name Filter Information Network Interface Raw IP Header Raw Payload GMT Log Time Source Port Processing Time Bytes Sent Bytes Received Cache Information Error Information Authentication Server Log Time Client IP Destination IP Destination Port Protocol Action Rule Result Code HTTP Status Code Client Username Source Network Destination Network URL Server Name Log Record Type 10.XXX.YY.174 - TCP - - - 24.08.2010 13:25:24 1080 0 0 0 0x0 0x0 - 24.08.2010 06:25:24 10.XXX.YY.174 10.XXX.YY.175 80 HTTP Initiated Connection MyHTTPAccess 0x0 ERROR_SUCCESS Internal Local Host - PROXYTEST Firewall 10.XXX.YY.175 - TCP - - - 24.08.2010 13:25:24 2275 0 0 0 0x0 0x0 - 24.08.2010 06:25:24 10.XXX.YY.175 10.XXX.YY.175 80 HTTP Initiated Connection 0x0 ERROR_SUCCESS Local Host Local Host - PROXYTEST Firewall 10.XXX.YY.175 - TCP - - - 24.08.2010 13:25:25 2275 0 0 0 0x0 0x0 - 24.08.2010 06:25:25 10.XXX.YY.175 10.XXX.YY.175 80 HTTP Closed Connection 0x80074e20 FWX_E_GRACEFUL_SHUTDOWN Local Host Local Host - PROXYTEST Firewall 10.XXX.YY.175 - TCP - - - 24.08.2010 13:25:25 2276 0 0 0 0x0 0x0 - 24.08.2010 06:25:25 10.XXX.YY.175 10.XXX.YY.175 80 HTTP Initiated Connection 0x0 ERROR_SUCCESS Local Host Local Host - PROXYTEST Firewall 10.XXX.YY.175 - TCP - - - 24.08.2010 13:25:26 2276 0 0 0 0x0 0x0 - 24.08.2010 06:25:26 10.XXX.YY.175 10.XXX.YY.175 80 HTTP Closed Connection 0x80074e20 FWX_E_GRACEFUL_SHUTDOWN Local Host Local Host - PROXYTEST Firewall 10.XXX.YY.175 - TCP - - - 24.08.2010 13:25:26 2277 0 0 0 0x0 0x0 - 24.08.2010 06:25:26 10.XXX.YY.175 10.XXX.YY.175 80 HTTP Initiated Connection 0x0 ERROR_SUCCESS Local Host Local Host - PROXYTEST Firewall 10.XXX.YY.159 - UDP - - - 24.08.2010 13:25:26 68 0 0 0 0x0 0x0 - 24.08.2010 06:25:26 10.XXX.YY.159 255.255.255.255 67 DHCP (request) Denied Connection [Enterprise] Default rule 0xc004000d FWX_E_POLICY_RULES_DENIED Internal Local Host - PROXYTEST Firewall 10.XXX.YY.166 - UDP - - - 24.08.2010 13:25:26 68 0 0 0 0x0 0x0 - 24.08.2010 06:25:26 10.XXX.YY.166 255.255.255.255 67 DHCP (request) Denied Connection [Enterprise] Default rule 0xc004000d FWX_E_POLICY_RULES_DENIED Internal Local Host - PROXYTEST Firewall 0.0.0.0 Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; .NET CLR 2.0.50727; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729) Yes Proxy 10.XXX.YY.175 TCP GET Internet - - - Req ID: 096c76ae; Compression: client=No, server=No, compress rate=0% decompress rate=0% - - - 24.08.2010 13:25:27 0 2945 2581 446 0x0 0x40 24.08.2010 06:25:27 10.XXX.YY.174 10.XXX.YY.175 80 http Failed Connection Attempt MyHTTPAccess 10061 anonymous Internal Local Host http://www.vg.no/ PROXYTEST Web Proxy Filter 10.XXX.YY.175 - TCP - - - 24.08.2010 13:25:27 2277 0 0 0 0x0 0x0 - 24.08.2010 06:25:27 10.XXX.YY.175 10.XXX.YY.175 80 HTTP Closed Connection 0x80074e20 FWX_E_GRACEFUL_SHUTDOWN Local Host Local Host - PROXYTEST Firewall

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  • DHCP reply packets do not make it into KVM instance in OpenStack

    - by Lorin Hochstein
    I'm running a KVM instance inside of OpenStack, and it isn't getting an IP address from the DHCP server. Using tcpdump, I can see the request and reply packets on vnet0 of the compute host: # tcpdump -i vnet0 -n port 67 or port 68 tcpdump: WARNING: vnet0: no IPv4 address assigned tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on vnet0, link-type EN10MB (Ethernet), capture size 65535 bytes 19:44:56.176727 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from fa:16:3e:46:f6:11, length 300 19:44:56.176785 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from fa:16:3e:46:f6:11, length 300 19:44:56.177315 IP 10.40.0.1.67 > 10.40.0.3.68: BOOTP/DHCP, Reply, length 319 19:45:02.179834 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from fa:16:3e:46:f6:11, length 300 19:45:02.179904 IP 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from fa:16:3e:46:f6:11, length 300 19:45:02.180375 IP 10.40.0.1.67 > 10.40.0.3.68: BOOTP/DHCP, Reply, length 319 However, if I do the same thing on eth0 inside the KVM instance, I only see the request packets, not the reply packets. What would prevent the packets from making it from vnet0 of the host to eth0 of the guest? My host is running Ubuntu 12.04 and my guest is running CentOS 6.3. Note that I have added this rule in my iptables, but it doesn't resolve the issue: -A POSTROUTING -p udp -m udp --dport 68 -j CHECKSUM --checksum-fill The instance corresponds to vnet0 and is connected via br100: # brctl show bridge name bridge id STP enabled interfaces br100 8000.54781a8605f2 no eth1 vnet0 vnet1 virbr0 8000.000000000000 yes Here's the full iptables-save: # Generated by iptables-save v1.4.12 on Tue Apr 2 19:47:27 2013 *nat :PREROUTING ACCEPT [8323:2553683] :INPUT ACCEPT [7993:2494942] :OUTPUT ACCEPT [6158:461050] :POSTROUTING ACCEPT [6455:511595] :nova-compute-OUTPUT - [0:0] :nova-compute-POSTROUTING - [0:0] :nova-compute-PREROUTING - [0:0] :nova-compute-float-snat - [0:0] :nova-compute-snat - [0:0] :nova-postrouting-bottom - [0:0] -A PREROUTING -j nova-compute-PREROUTING -A OUTPUT -j nova-compute-OUTPUT -A POSTROUTING -j nova-compute-POSTROUTING -A POSTROUTING -j nova-postrouting-bottom -A POSTROUTING -s 192.168.122.0/24 ! -d 192.168.122.0/24 -p tcp -j MASQUERADE --to-ports 1024-65535 -A POSTROUTING -s 192.168.122.0/24 ! -d 192.168.122.0/24 -p udp -j MASQUERADE --to-ports 1024-65535 -A POSTROUTING -s 192.168.122.0/24 ! -d 192.168.122.0/24 -j MASQUERADE -A nova-compute-snat -j nova-compute-float-snat -A nova-postrouting-bottom -j nova-compute-snat COMMIT # Completed on Tue Apr 2 19:47:27 2013 # Generated by iptables-save v1.4.12 on Tue Apr 2 19:47:27 2013 *mangle :PREROUTING ACCEPT [7969:5385812] :INPUT ACCEPT [7905:5363718] :FORWARD ACCEPT [158:48190] :OUTPUT ACCEPT [6877:8647975] :POSTROUTING ACCEPT [7035:8696165] -A POSTROUTING -o virbr0 -p udp -m udp --dport 68 -j CHECKSUM --checksum-fill -A POSTROUTING -p udp -m udp --dport 68 -j CHECKSUM --checksum-fill COMMIT # Completed on Tue Apr 2 19:47:27 2013 # Generated by iptables-save v1.4.12 on Tue Apr 2 19:47:27 2013 *filter :INPUT ACCEPT [2196774:15856921923] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [2447201:1170227646] :nova-compute-FORWARD - [0:0] :nova-compute-INPUT - [0:0] :nova-compute-OUTPUT - [0:0] :nova-compute-inst-19 - [0:0] :nova-compute-inst-20 - [0:0] :nova-compute-local - [0:0] :nova-compute-provider - [0:0] :nova-compute-sg-fallback - [0:0] :nova-filter-top - [0:0] -A INPUT -j nova-compute-INPUT -A INPUT -i virbr0 -p udp -m udp --dport 53 -j ACCEPT -A INPUT -i virbr0 -p tcp -m tcp --dport 53 -j ACCEPT -A INPUT -i virbr0 -p udp -m udp --dport 67 -j ACCEPT -A INPUT -i virbr0 -p tcp -m tcp --dport 67 -j ACCEPT -A FORWARD -j nova-filter-top -A FORWARD -j nova-compute-FORWARD -A FORWARD -d 192.168.122.0/24 -o virbr0 -m state --state RELATED,ESTABLISHED -j ACCEPT -A FORWARD -s 192.168.122.0/24 -i virbr0 -j ACCEPT -A FORWARD -i virbr0 -o virbr0 -j ACCEPT -A FORWARD -o virbr0 -j REJECT --reject-with icmp-port-unreachable -A FORWARD -i virbr0 -j REJECT --reject-with icmp-port-unreachable -A OUTPUT -j nova-filter-top -A OUTPUT -j nova-compute-OUTPUT -A nova-compute-FORWARD -i br100 -j ACCEPT -A nova-compute-FORWARD -o br100 -j ACCEPT -A nova-compute-inst-19 -m state --state INVALID -j DROP -A nova-compute-inst-19 -m state --state RELATED,ESTABLISHED -j ACCEPT -A nova-compute-inst-19 -j nova-compute-provider -A nova-compute-inst-19 -s 10.40.0.1/32 -p udp -m udp --sport 67 --dport 68 -j ACCEPT -A nova-compute-inst-19 -s 10.40.0.0/16 -j ACCEPT -A nova-compute-inst-19 -p tcp -m tcp --dport 22 -j ACCEPT -A nova-compute-inst-19 -p icmp -j ACCEPT -A nova-compute-inst-19 -j nova-compute-sg-fallback -A nova-compute-inst-20 -m state --state INVALID -j DROP -A nova-compute-inst-20 -m state --state RELATED,ESTABLISHED -j ACCEPT -A nova-compute-inst-20 -j nova-compute-provider -A nova-compute-inst-20 -s 10.40.0.1/32 -p udp -m udp --sport 67 --dport 68 -j ACCEPT -A nova-compute-inst-20 -s 10.40.0.0/16 -j ACCEPT -A nova-compute-inst-20 -p tcp -m tcp --dport 22 -j ACCEPT -A nova-compute-inst-20 -p icmp -j ACCEPT -A nova-compute-inst-20 -j nova-compute-sg-fallback -A nova-compute-local -d 10.40.0.3/32 -j nova-compute-inst-19 -A nova-compute-local -d 10.40.0.4/32 -j nova-compute-inst-20 -A nova-compute-sg-fallback -j DROP -A nova-filter-top -j nova-compute-local COMMIT # Completed on Tue Apr 2 19:47:27 2013

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  • Ubuntu cannot access internet, LAN is fine

    - by Kevin Southworth
    I have an Ubuntu 8.04 LTS server that is directly connected to our Comcast Business Gateway modem and I have configured it with 1 of our 5 allotted Static IPs. My other machines on our LAN can connect to this server (via ssh, web, ping, etc.) but I cannot access this server from outside our network, and this machine cannot get out to the internet either (ping google.com fails with unknown host). Here is my /etc/networking/interfaces file: auto lo iface lo inet loopback auto eth0 iface eth0 inet static address 173.162.54.19 netmask 255.255.255.248 broadcast 173.162.54.23 gateway 173.162.54.22 and my /etc/resolv.conf: nameserver 68.87.77.130 nameserver 68.87.72.130 output from sudo route -n: Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 173.162.54.16 0.0.0.0 255.255.255.248 U 0 0 0 eth0 0.0.0.0 173.162.54.22 0.0.0.0 UG 100 0 0 eth0 I have a Windows 2008 machine with an almost identical Static IP, static DNS setup and it works correctly, can access it within the LAN and also from public internet, the Windows machine and the Ubuntu machine are both directly connected to the Comcast Business Gateway. I have tried rebooting Ubuntu, rebooting my Comcast modem, but nothing seems to make it work. I'm an Ubuntu noob, is there some other config I need to apply to make this work? UPDATE: Yes I am able to ping my default gateway 173.162.54.22 output of iptables --list -n: Chain INPUT (policy DROP) target prot opt source destination ufw-before-input all -- 0.0.0.0/0 0.0.0.0/0 ufw-after-input all -- 0.0.0.0/0 0.0.0.0/0 Chain FORWARD (policy DROP) target prot opt source destination ufw-before-forward all -- 0.0.0.0/0 0.0.0.0/0 ufw-after-forward all -- 0.0.0.0/0 0.0.0.0/0 Chain OUTPUT (policy ACCEPT) target prot opt source destination ufw-before-output all -- 0.0.0.0/0 0.0.0.0/0 ufw-after-output all -- 0.0.0.0/0 0.0.0.0/0 Chain ufw-after-forward (1 references) target prot opt source destination LOG all -- 0.0.0.0/0 0.0.0.0/0 limit: avg 3/min burst 10 LOG flags 0 level 4 prefix `[UFW BLOCK FORWARD]: ' RETURN all -- 0.0.0.0/0 0.0.0.0/0 Chain ufw-after-input (1 references) target prot opt source destination RETURN udp -- 0.0.0.0/0 0.0.0.0/0 udp dpt:137 RETURN udp -- 0.0.0.0/0 0.0.0.0/0 udp dpt:138 RETURN tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:139 RETURN tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:445 RETURN udp -- 0.0.0.0/0 0.0.0.0/0 udp dpt:67 RETURN udp -- 0.0.0.0/0 0.0.0.0/0 udp dpt:68 LOG all -- 0.0.0.0/0 0.0.0.0/0 limit: avg 3/min burst 10 LOG flags 0 level 4 prefix `[UFW BLOCK INPUT]: ' RETURN all -- 0.0.0.0/0 0.0.0.0/0 Chain ufw-after-output (1 references) target prot opt source destination RETURN all -- 0.0.0.0/0 0.0.0.0/0 Chain ufw-before-forward (1 references) target prot opt source destination ufw-user-forward all -- 0.0.0.0/0 0.0.0.0/0 RETURN all -- 0.0.0.0/0 0.0.0.0/0 Chain ufw-before-input (1 references) target prot opt source destination ACCEPT all -- 0.0.0.0/0 0.0.0.0/0 ACCEPT all -- 0.0.0.0/0 0.0.0.0/0 ctstate RELATED,ESTABLISHED DROP all -- 0.0.0.0/0 0.0.0.0/0 ctstate INVALID ACCEPT icmp -- 0.0.0.0/0 0.0.0.0/0 icmp type 3 ACCEPT icmp -- 0.0.0.0/0 0.0.0.0/0 icmp type 4 ACCEPT icmp -- 0.0.0.0/0 0.0.0.0/0 icmp type 11 ACCEPT icmp -- 0.0.0.0/0 0.0.0.0/0 icmp type 12 ACCEPT icmp -- 0.0.0.0/0 0.0.0.0/0 icmp type 8 ACCEPT udp -- 0.0.0.0/0 0.0.0.0/0 udp spt:67 dpt:68 ufw-not-local all -- 0.0.0.0/0 0.0.0.0/0 ACCEPT all -- 224.0.0.0/4 0.0.0.0/0 ACCEPT all -- 0.0.0.0/0 224.0.0.0/4 ufw-user-input all -- 0.0.0.0/0 0.0.0.0/0 RETURN all -- 0.0.0.0/0 0.0.0.0/0 Chain ufw-before-output (1 references) target prot opt source destination ACCEPT all -- 0.0.0.0/0 0.0.0.0/0 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW,RELATED,ESTABLISHED ACCEPT udp -- 0.0.0.0/0 0.0.0.0/0 state NEW,RELATED,ESTABLISHED ufw-user-output all -- 0.0.0.0/0 0.0.0.0/0 RETURN all -- 0.0.0.0/0 0.0.0.0/0 Chain ufw-not-local (1 references) target prot opt source destination RETURN all -- 0.0.0.0/0 0.0.0.0/0 ADDRTYPE match dst-type LOCAL RETURN all -- 0.0.0.0/0 0.0.0.0/0 ADDRTYPE match dst-type MULTICAST RETURN all -- 0.0.0.0/0 0.0.0.0/0 ADDRTYPE match dst-type BROADCAST LOG all -- 0.0.0.0/0 0.0.0.0/0 limit: avg 3/min burst 10 LOG flags 0 level 4 prefix `[UFW BLOCK NOT-TO-ME]: ' DROP all -- 0.0.0.0/0 0.0.0.0/0 Chain ufw-user-forward (1 references) target prot opt source destination RETURN all -- 0.0.0.0/0 0.0.0.0/0 Chain ufw-user-input (1 references) target prot opt source destination ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:80 ACCEPT udp -- 0.0.0.0/0 0.0.0.0/0 udp dpt:80 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:22 ACCEPT udp -- 0.0.0.0/0 0.0.0.0/0 udp dpt:22 RETURN all -- 0.0.0.0/0 0.0.0.0/0 Chain ufw-user-output (1 references) target prot opt source destination RETURN all -- 0.0.0.0/0 0.0.0.0/0

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  • ASP.NET WebAPI Security 2: Identity Architecture

    - by Your DisplayName here!
    Pedro has beaten me to the punch with a detailed post (and diagram) about the WebAPI hosting architecture. So go read his post first, then come back so we can have a closer look at what that means for security. The first important takeaway is that WebAPI is hosting independent-  currently it ships with two host integration implementations – one for ASP.NET (aka web host) and WCF (aka self host). Pedro nicely shows the integration into the web host. Self hosting is not done yet so we will mainly focus on the web hosting case and I will point out security related differences when they exist. The interesting part for security (amongst other things of course) is the HttpControllerHandler (see Pedro’s diagram) – this is where the host specific representation of an HTTP request gets converted to the WebAPI abstraction (called HttpRequestMessage). The ConvertRequest method does the following: Create a new HttpRequestMessage. Copy URI, method and headers from the HttpContext. Copies HttpContext.User to the Properties<string, object> dictionary on the HttpRequestMessage. The key used for that can be found on HttpPropertyKeys.UserPrincipalKey (which resolves to “MS_UserPrincipal”). So the consequence is that WebAPI receives whatever IPrincipal has been set by the ASP.NET pipeline (in the web hosting case). Common questions are: Are there situations where is property does not get set? Not in ASP.NET – the DefaultAuthenticationModule in the HTTP pipeline makes sure HttpContext.User (and Thread.CurrentPrincipal – more on that later) are always set. Either to some authenticated user – or to an anonymous principal. This may be different in other hosting environments (again more on that later). Why so generic? Keep in mind that WebAPI is hosting independent and may run on a host that materializes identity completely different compared to ASP.NET (or .NET in general). This gives them a way to evolve the system in the future. How does WebAPI code retrieve the current client identity? HttpRequestMessage has an extension method called GetUserPrincipal() which returns the property as an IPrincipal. A quick look at self hosting shows that the moral equivalent of HttpControllerHandler.ConvertRequest() is HttpSelfHostServer.ProcessRequestContext(). Here the principal property gets only set when the host is configured for Windows authentication (inconsisteny). Do I like that? Well – yes and no. Here are my thoughts: I like that it is very straightforward to let WebAPI inherit the client identity context of the host. This might not always be what you want – think of an ASP.NET app that consists of UI and APIs – the UI might use Forms authentication, the APIs token based authentication. So it would be good if the two parts would live in a separate security world. It makes total sense to have this generic hand off point for identity between the host and WebAPI. It also makes total sense for WebAPI plumbing code (especially handlers) to use the WebAPI specific identity abstraction. But – c’mon we are running on .NET. And the way .NET represents identity is via IPrincipal/IIdentity. That’s what every .NET developer on this planet is used to. So I would like to see a User property of type IPrincipal on ApiController. I don’t like the fact that Thread.CurrentPrincipal is not populated. T.CP is a well established pattern as a one stop shop to retrieve client identity on .NET.  That makes a lot of sense – even if the name is misleading at best. There might be existing library code you want to call from WebAPI that makes use of T.CP (e.g. PrincipalPermission, or a simple .Name or .IsInRole()). Having the client identity as an ambient property is useful for code that does not have access to the current HTTP request (for calling GetUserPrincipal()). I don’t like the fact that that the client identity conversion from host to WebAPI is inconsistent. This makes writing security plumbing code harder. I think the logic should always be: If the host has a client identity representation, copy it. If not, set an anonymous principal on the request message. Btw – please don’t annoy me with the “but T.CP is static, and static is bad for testing” chant. T.CP is a getter/setter and, in fact I find it beneficial to be able to set different security contexts in unit tests before calling in some logic. And, in case you have wondered – T.CP is indeed thread static (and the name comes from a time where a logical operation was bound to a thread – which is not true anymore). But all thread creation APIs in .NET actually copy T.CP to the new thread they create. This is the case since .NET 2.0 and is certainly an improvement compared to how Win32 does things. So to sum it up: The host plumbing copies the host client identity to WebAPI (this is not perfect yet, but will surely be improved). or in other words: The current WebAPI bits don’t ship with any authentication plumbing, but solely use whatever authentication (and thus client identity) is set up by the host. WebAPI developers can retrieve the client identity from the HttpRequestMessage. Hopefully my proposed changes around T.CP and the User property on ApiController will be added. In the next post, I will detail how to add WebAPI specific authentication support, e.g. for Basic Authentication and tokens. This includes integrating the notion of claims based identity. After that we will look at the built-in authorization bits and how to improve them as well. Stay tuned.

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  • Trouble using genericra to integrate activemq and glassfish when using failover protocol

    - by Kyle
    Hi, I'm attempting to use activemq in glassfish using the genericra resource adapter provided with glassfish 2.1. I have found a few pages with helpful information including http://activemq.apache.org/sjsas-with-genericjmsra.html. I have actually had success and been able to get MDBs to use activemq as their JMS provider, but I'm running into an issue as I'm trying to do some more complicated configuration. I want to set up a master-slave configuration, which would require my clients to use a brokerURL of failover:(tcp://broker1:61616,tcp://broker2:61616). In order to do this, I set the following property when calling asadmin create-resource-adapter-config (I have to escape '=' and ':'): ConnectionFactoryProperties=brokerURL\=failover\:(tcp\://127.0.0.1\:61616,tcp://127.0.0.1\:61617) However, I am now getting a StringIndexOutOfBoundsException when my application starts up. I suspect the comma in between the two URLs is the culprit, since this works fine: brokerURL\=failover\:(tcp\://127.0.0.1\:61616) Just wondering if anyone has dealt with this issue before. Also wondering if there is a better way to integrate with glassfish than using the generic resource adapter.

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  • Cloud Computing Forces Better Design Practices

    - by Herve Roggero
    Is cloud computing simply different than on premise development, or is cloud computing actually forcing you to create better applications than you normally would? In other words, is cloud computing merely imposing different design principles, or forcing better design principles?  A little while back I got into a discussion with a developer in which I was arguing that cloud computing, and specifically Windows Azure in his case, was forcing developers to adopt better design principles. His opinion was that cloud computing was not yielding better systems; just different systems. In this blog, I will argue that cloud computing does force developers to use better design practices, and hence better applications. So the first thing to define, of course, is the word “better”, in the context of application development. Looking at a few definitions online, better means “superior quality”. As it relates to this discussion then, I stipulate that cloud computing can yield higher quality applications in terms of scalability, everything else being equal. Before going further I need to also outline the difference between performance and scalability. Performance and scalability are two related concepts, but they don’t mean the same thing. Scalability is the measure of system performance given various loads. So when developers design for performance, they usually give higher priority to a given load and tend to optimize for the given load. When developers design for scalability, the actual performance at a given load is not as important; the ability to ensure reasonable performance regardless of the load becomes the objective. This can lead to very different design choices. For example, if your objective is to obtains the fastest response time possible for a service you are building, you may choose the implement a TCP connection that never closes until the client chooses to close the connection (in other words, a tightly coupled service from a connectivity standpoint), and on which a connection session is established for faster processing on the next request (like SQL Server or other database systems for example). If you objective is to scale, you may implement a service that answers to requests without keeping session state, so that server resources are released as quickly as possible, like a REST service for example. This alternate design would likely have a slower response time than the TCP service for any given load, but would continue to function at very large loads because of its inherently loosely coupled design. An example of a REST service is the NO-SQL implementation in the Microsoft cloud called Azure Tables. Now, back to cloud computing… Cloud computing is designed to help you scale your applications, specifically when you use Platform as a Service (PaaS) offerings. However it’s not automatic. You can design a tightly-coupled TCP service as discussed above, and as you can imagine, it probably won’t scale even if you place the service in the cloud because it isn’t using a connection pattern that will allow it to scale [note: I am not implying that all TCP systems do not scale; I am just illustrating the scalability concepts with an imaginary TCP service that isn’t designed to scale for the purpose of this discussion]. The other service, using REST, will have a better chance to scale because, by design, it minimizes resource consumption for individual requests and doesn’t tie a client connection to a specific endpoint (which means you can easily deploy this service to hundreds of machines without much trouble, as long as your pockets are deep enough). The TCP and REST services discussed above are both valid designs; the TCP service is faster and the REST service scales better. So is it fair to say that one service is fundamentally better than the other? No; not unless you need to scale. And if you don’t need to scale, then you don’t need the cloud in the first place. However, it is interesting to note that if you do need to scale, then a loosely coupled system becomes a better design because it can almost always scale better than a tightly-coupled system. And because most applications grow overtime, with an increasing user base, new functional requirements, increased data and so forth, most applications eventually do need to scale. So in my humble opinion, I conclude that a loosely coupled system is not just different than a tightly coupled system; it is a better design, because it will stand the test of time. And in my book, if a system stands the test of time better than another, it is of superior quality. Because cloud computing demands loosely coupled systems so that its underlying service architecture can be leveraged, developers ultimately have no choice but to design loosely coupled systems for the cloud. And because loosely coupled systems are better… … the cloud forces better design practices. My 2 cents.

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  • Remoting server forcibly closing client connections in the middle of remote calls

    - by Carsten Hess
    Hello everyone. I have a system consisting of a server accepting remoting calls from clients with TCP as the underlying transportlayer. It normally works like a charm, but if I increase the no. of clients, the server starts at random to close the TCP connections in the middle of the calls. Not all calls are interrupted this way. That is really unexpected behaviour... I get no exceptions on the server side, just the client side exception: System.Net.Sockets.SocketException: An existing connection was forcibly closed by the remote host Server stack trace: ved System.Net.Sockets.Socket.Receive(Byte[] buffer, Int32 offset, Int32 size, SocketFlags socketFlags) ved System.Runtime.Remoting.Channels.SocketStream.Read(Byte[] buffer, Int32 offset, Int32 size) ved System.Runtime.Remoting.Channels.SocketHandler.ReadFromSocket(Byte[] buffer, Int32 offset, Int32 count) ved System.Runtime.Remoting.Channels.SocketHandler.Read(Byte[] buffer, Int32 offset, Int32 count) ved System.Runtime.Remoting.Channels.SocketHandler.ReadAndMatchFourBytes(Byte[] buffer) ved System.Runtime.Remoting.Channels.Tcp.TcpSocketHandler.ReadAndMatchPreamble() ved System.Runtime.Remoting.Channels.Tcp.TcpSocketHandler.ReadVersionAndOperation(UInt16& operation) ved System.Runtime.Remoting.Channels.Tcp.TcpClientSocketHandler.ReadHeaders() ved System.Runtime.Remoting.Channels.Tcp.TcpClientTransportSink.ProcessMessage(IMessage msg, ITransportHeaders requestHeaders, Stream requestStream, ITransportHeaders& responseHeaders, Stream& responseStream) ved System.Runtime.Remoting.Channels.BinaryClientFormatterSink.SyncProcessMessage(IMessage msg) Exception rethrown at [0]: ved System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg) ved System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type) ved EBH.GuG.AgentKit.Transports.RemotingAgentHostEndPoint.SyncInvoke(Agent a, Int32 port)

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  • How to asynchronously read to std::string using Boost::asio?

    - by SpyBot
    Hello. I'm learning Boost::asio and all that async stuff. How can I asynchronously read to variable user_ of type std::string? Boost::asio::buffer(user_) works only with async_write(), but not with async_read(). It works with vector, so what is the reason for it not to work with string? Is there another way to do that besides declaring char user_[max_len] and using Boost::asio::buffer(user_, max_len)? Also, what's the point of inheriting from boost::enable_shared_from_this<Connection> and using shared_from_this() instead of this in async_read() and async_write()? I've seen that a lot in the examples. Here is a part of my code: class Connection { public: Connection(tcp::acceptor &acceptor) : acceptor_(acceptor), socket_(acceptor.get_io_service(), tcp::v4()) { } void start() { acceptor_.get_io_service().post( boost::bind(&Connection::start_accept, this)); } private: void start_accept() { acceptor_.async_accept(socket_, boost::bind(&Connection::handle_accept, this, placeholders::error)); } void handle_accept(const boost::system::error_code& err) { if (err) { disconnect(); } else { async_read(socket_, boost::asio::buffer(user_), boost::bind(&Connection::handle_user_read, this, placeholders::error, placeholders::bytes_transferred)); } } void handle_user_read(const boost::system::error_code& err, std::size_t bytes_transferred) { if ( err or (bytes_transferred != sizeof(user_)) ) { disconnect(); } else { ... } } ... void disconnect() { socket_.shutdown(tcp::socket::shutdown_both); socket_.close(); socket_.open(tcp::v4()); start_accept(); } tcp::acceptor &acceptor_; tcp::socket socket_; std::string user_; std::string pass_; ... };

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  • Boost ASIO Headache

    - by bobber205
    Man... thought using ASIO in Boost was going to be easy and intuitive. :P I am starting to get it finally but I am having some trouble. Here's a snippet. I am having several compiler errors on the async_accept line. What am I doing wrong? :P I've based my code off of this page: http://www.boost.org/doc/libs/1_43_0/doc/html/boost_asio/tutorial/tutdaytime3/src.html bool TestSocket::StartListening(int port) { bool didStart = false; if (!this->listening) { //try to listen acceptor = new tcp::acceptor(this->myService, tcp::endpoint(tcp::v4(), port)); didStart = true; //probably change? tcp::socket* tempNewSocket = new tcp::socket(this->myService); acceptor->async_accept(tempNewSocket, boost::bind(&AlexSocket::NewConnection, this, tempNewSocket, boost::asio::placeholders::error) ); } else //already started! return false; this->listening = didStart; return didStart; } void TestSocket::NewConnection(tcp::socket* s, const boost::system::error_code& error) { }

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  • Building an http packet in libnet(tcp packet), Please help us as soon as posible. we are stuck!

    - by Hila
    we are building a NAT program,we change each packet that comes from our internal subnet, change it's source IP address by libnet functions.( catch the packet with libpcap, put it sniff structures and build the new packet with libnet) over TCP, the syn/ack packets are good after the change, and when a HTTP-GET request is coming, we can see by wireshark that there is an error on the checksum field.. all the other fields are exactly the same as the original packet. Is anyone knows what can cause this problem? the new checksum in other packets is calculated as it should be.. but in the HTTP packet it doesn't..

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  • C# listview add items

    - by Eyla
    Greetings, I have a method to capture packets. after capturing I want to add each packet as a row in listview in runting time so as soon as I capture packet I want to add it to the list view. the problem that when I use items.Add() I will get overload argument error. please advice!! here is my code: private void packetCapturingThreadMethod() { Packet packet = null; int countOfPacketCaptures = 0; while ((packet = device.GetNextPacket()) != null) { packet = device.GetNextPacket(); if (packet is TCPPacket) { TCPPacket tcp = (TCPPacket)packet; myPacket tempPacket = new myPacket(); tempPacket.packetType = "TCP"; tempPacket.sourceAddress = Convert.ToString(tcp.SourceAddress); tempPacket.destinationAddress = Convert.ToString(tcp.DestinationAddress); tempPacket.sourcePort = Convert.ToString(tcp.SourcePort); tempPacket.destinationPort = Convert.ToString(tcp.DestinationPort); tempPacket.packetMessage = Convert.ToString(tcp.Data); packetsList.Add(tempPacket); string[] row = { packetsList[countOfPacketCaptures].packetType, packetsList[countOfPacketCaptures].sourceAddress, packetsList[countOfPacketCaptures].destinationAddress, packetsList[countOfPacketCaptures].sourcePort, packetsList[countOfPacketCaptures].destinationPort, packetsList[countOfPacketCaptures].packetMessage }; try { listView1.Items.Add(packetsList[countOfPacketCaptures].packetType, packetsList[countOfPacketCaptures].sourceAddress, packetsList[countOfPacketCaptures].destinationAddress, packetsList[countOfPacketCaptures].sourcePort, packetsList[countOfPacketCaptures].destinationPort, packetsList[countOfPacketCaptures].packetMessage) ; countOfPacketCaptures++; lblCapturesLabels.Text = Convert.ToString(countOfPacketCaptures);} catch (Exception e) { } } else if (packet is UDPPacket) { UDPPacket udp = (UDPPacket)packet; myPacket tempPacket = new myPacket(); tempPacket.packetType = "UDP"; tempPacket.sourceAddress = Convert.ToString(udp.SourceAddress); tempPacket.destinationAddress = Convert.ToString(udp.DestinationAddress); tempPacket.sourcePort = Convert.ToString(udp.SourcePort); tempPacket.destinationPort = Convert.ToString(udp.DestinationPort); tempPacket.packetMessage = Convert.ToString(udp.Data); packetsList.Add(tempPacket); string[] row = { packetsList[countOfPacketCaptures].packetType, packetsList[countOfPacketCaptures].sourceAddress, packetsList[countOfPacketCaptures].destinationAddress, packetsList[countOfPacketCaptures].sourcePort, packetsList[countOfPacketCaptures].destinationPort, packetsList[countOfPacketCaptures].packetMessage }; try { dgwPacketInfo.Rows.Add(row); countOfPacketCaptures++; lblCapturesLabels.Text = Convert.ToString(countOfPacketCaptures); } catch (Exception e) { } } } }

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  • What is "Disable class based route addition" good for?

    - by id.roppert.dejroppert
    In the advanced TCP/IP settings of a VPN connection, i found a checkbox labeled with "Disable class based route addition". The checkbox is only enabled as long as "Use default gateway on remote network" is switched off. What is "Disable class based route addition" good for? Detailed instructions to find the settings: Open Properties of VPN connection Go to Networking tab Open Properties of "Internet Protocol Version 4 (TCP/IPv4)" (and/or TCP/IPv6) Click "Advanced..." Button Change to "IP Settings" tab Here you can find the checkboxes mentioned above

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  • Handshake violation when trying to access one website

    - by Miguel
    I have a TZ 190 Wireless Enhanced with SonicOS Enhanced 4.2.1.0-20e. Yesterday, people could access without any problems a bank website wich uses HTTPS. Today, it is imposible to access only that website, every other ones works without problems. When checking the log message filtering to my IP only, this is what appears and I suspect is the cause of this problem, because all other websites are working: Priority: Notice Category: Network Access Message: TCP handshake violation detected; TCP connection dropped Source: X.Y.Z.3, 51997, LAN (admin) Destination: 200.14.232.18, 443, WAN Notes: Handshake Timeout Where X.Y.Z.3 is my local IP. I've tried to change TCP Settings under Firewall option, and activated this options with no success: Enforce strict TCP compliance with RFC 793 and RFC 1122 and Enable TCP checksum enforcement I've also tried to find the MTU and at first I got: Packet needs to be fragmented but DF set But when I lower the value of ping -f -l to 1468 I got: Request timeout. Also I deactivate CFS in lan and wan zones. Nothing works. Can you please help me? Any Ideas?

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  • L2TP iptables port forward

    - by The_cobra666
    Hi all, I'm setting up port forwarding for an L2TP VPN connection to the local Windows 2003 VPN server. The router is a simpel Debian machine with iptables. The VPN server works perfect. But I cannot log in from the WAN. I'm missing something. The VPN server is using a pre-shared key (L2TP) and give's out an IP in the range: 192.168.3.0. Local network range is 192.168.2.0/24 I added the route: with route add -net 192.168.3.0 netmask 255.255.255.240 gw 192.168.2.13 (the vpn server) iptables -t nat -A PREROUTING -p udp --dport 1701 -i eth0 -j DNAT --to 192.168.2.13 iptables -A FORWARD -p udp --dport 1701 -j ACCEPT iptables -t nat -A PREROUTING -p udp --dport 500 -i eth0 -j DNAT --to 192.168.2.13 iptables -A FORWARD -p udp --dport 500 -j ACCEPT iptables -t nat -A PREROUTING -p udp --dport 4500 -i eth0 -j DNAT --to 192.168.2.13 iptables -A FORWARD -p udp --dport 4500 -j ACCEPT iptables -t nat -A PREROUTING -p 50 -j DNAT --to 192.168.2.13 iptables -A FORWARD -p 50 -j ACCEPT iptables -t nat -A PREROUTING -p 51 -j DNAT --to 192.168.2.13 iptables -A FORWARD -p 51 -j ACCEPT The whole iptables script is (without the line's from above): echo 1 > /proc/sys/net/ipv4/ip_forward echo 1 > /proc/sys/net/ipv4/tcp_syncookies #Flush table's iptables -F INPUT iptables -F OUTPUT iptables -F FORWARD iptables -t nat -F #Drop traffic iptables -P INPUT DROP iptables -P FORWARD DROP iptables -P OUTPUT ACCEPT #verkeer naar buiten toe laten en nat aanzetten iptables -A FORWARD -i eth0 -o eth1 -m state --state ESTABLISHED,RELATED -j ACCEPT iptables -A FORWARD -i eth1 -o eth0 -j ACCEPT iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE #RDP forward voor windows servers iptables -t nat -A PREROUTING -p tcp --dport 3389 -i eth0 -j DNAT --to 192.168.2.10:3389 iptables -A FORWARD -p tcp --dport 3389 -j ACCEPT iptables -t nat -A PREROUTING -p tcp --dport 3340 -i eth0 -j DNAT --to 192.168.2.12:3340 iptables -A FORWARD -p tcp --dport 3340 -j ACCEPT #toestaan SSH verkeer iptables -t nat -A PREROUTING -p tcp --dport 22 -i eth0 -j DNAT --to-destination 192.168.2.1 iptables -A INPUT -p tcp --dport 22 -j ACCEPT #toestaan verkeer loopback iptables -A INPUT -i lo -j ACCEPT #toestaan lokaal netwerk iptables -A INPUT -i eth1 -j ACCEPT #accepteren established traffic iptables -A INPUT -i eth0 --match state --state RELATED,ESTABLISHED -j ACCEPT #droppen ICMP boodschappen iptables -A INPUT -p icmp -i eth0 -m limit --limit 10/minute -j ACCEPT iptables -A INPUT -p icmp -i eth0 -j REJECT ifconfig eth1 192.168.2.1/24 ifconfig eth0 XXXXXXXXXXXXX/30 ifconfig eth0 up ifconfig eth1 up route add default gw XXXXXXXXXXXXXXXXXXX route add -net 192.168.3.0 netmask 255.255.255.240 gw 192.168.2.13

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  • Openvpn plugin openvpn-auth-ldap does not bind to Active Directory

    - by Selivanov Pavel
    I'm trying to configure OpenVPN with openvpn-auth-ldap plugin to authorize users via Active Directory LDAP. When I use the same server config without plugin option, and add client config with generated client key and cert, connection is successful, so problem is in the plugin. server.conf: plugin /usr/lib/openvpn/openvpn-auth-ldap.so "/etc/openvpn-test/openvpn-auth-ldap.conf" port 1194 proto tcp dev tun keepalive 10 60 topology subnet server 10.0.2.0 255.255.255.0 tls-server ca ca.crt dh dh1024.pem cert server.crt key server.key #crl-verify crl.pem persist-key persist-tun user nobody group nogroup verb 3 mute 20 openvpn-auth-ldap.conf: <LDAP> URL ldap://dc1.domain:389 TLSEnable no BindDN cn=bot_auth,cn=Users,dc=domain Password bot_auth Timeout 15 FollowReferrals yes </LDAP> <Authorization> BaseDN "cn=Users,dc=domain" SearchFilter "(sAMAccountName=%u)" RequireGroup false # <Group> # BaseDN "ou=groups,dc=mycompany,dc=local" # SearchFilter "(|(cn=developers)(cn=artists))" # MemberAttribute uniqueMember # </Group> </Authorization> Top-level domain in AD is used by historical reasons. Analogue configuration is working for Apache 2.2 in mod-authzn-ldap. User and password are correct. client.conf: remote server_name port 1194 proto tcp client pull remote-cert-tls server dev tun resolv-retry infinite nobind ca ca.crt ; with keys - works fine #cert test.crt #key test.key ; without keys - by password auth-user-pass persist-tun verb 3 mute 20 In server log there is string PLUGIN_INIT: POST /usr/lib/openvpn/openvpn-auth-ldap.so '[/usr/lib/openvpn/openvpn-auth-ldap.so] [/etc/openvpn-test/openvpn-auth-ldap.conf]' which indicates, that plugin failed. I can telnet to dc1.domain:389, so this is not network/firewall problem. Later server says TLS Error: TLS object -> incoming plaintext read error TLS handshake failed - without plugin it tryes to do usal key authentification. server log: Tue Nov 22 03:06:20 2011 OpenVPN 2.1.3 i486-pc-linux-gnu [SSL] [LZO2] [EPOLL] [PKCS11] [MH] [PF_INET6] [eurephia] built on Oct 21 2010 Tue Nov 22 03:06:20 2011 NOTE: OpenVPN 2.1 requires '--script-security 2' or higher to call user-defined scripts or executables Tue Nov 22 03:06:20 2011 PLUGIN_INIT: POST /usr/lib/openvpn/openvpn-auth-ldap.so '[/usr/lib/openvpn/openvpn-auth-ldap.so] [/etc/openvpn-test/openvpn-auth-ldap.conf]' intercepted=PLUGIN_AUTH_USER_PASS_VERIFY|PLUGIN_CLIENT_CONNECT|PLUGIN_CLIENT_DISCONNECT Tue Nov 22 03:06:20 2011 Diffie-Hellman initialized with 1024 bit key Tue Nov 22 03:06:20 2011 /usr/bin/openssl-vulnkey -q -b 1024 -m <modulus omitted> Tue Nov 22 03:06:20 2011 Control Channel Authentication: using 'ta.key' as a OpenVPN static key file Tue Nov 22 03:06:20 2011 Outgoing Control Channel Authentication: Using 160 bit message hash 'SHA1' for HMAC authentication Tue Nov 22 03:06:20 2011 Incoming Control Channel Authentication: Using 160 bit message hash 'SHA1' for HMAC authentication Tue Nov 22 03:06:20 2011 TLS-Auth MTU parms [ L:1543 D:168 EF:68 EB:0 ET:0 EL:0 ] Tue Nov 22 03:06:20 2011 Socket Buffers: R=[87380->131072] S=[16384->131072] Tue Nov 22 03:06:20 2011 TUN/TAP device tun1 opened Tue Nov 22 03:06:20 2011 TUN/TAP TX queue length set to 100 Tue Nov 22 03:06:20 2011 /sbin/ifconfig tun1 10.0.2.1 netmask 255.255.255.0 mtu 1500 broadcast 10.0.2.255 Tue Nov 22 03:06:20 2011 Data Channel MTU parms [ L:1543 D:1450 EF:43 EB:4 ET:0 EL:0 ] Tue Nov 22 03:06:20 2011 GID set to nogroup Tue Nov 22 03:06:20 2011 UID set to nobody Tue Nov 22 03:06:20 2011 Listening for incoming TCP connection on [undef] Tue Nov 22 03:06:20 2011 TCPv4_SERVER link local (bound): [undef] Tue Nov 22 03:06:20 2011 TCPv4_SERVER link remote: [undef] Tue Nov 22 03:06:20 2011 MULTI: multi_init called, r=256 v=256 Tue Nov 22 03:06:20 2011 IFCONFIG POOL: base=10.0.2.2 size=252 Tue Nov 22 03:06:20 2011 MULTI: TCP INIT maxclients=1024 maxevents=1028 Tue Nov 22 03:06:20 2011 Initialization Sequence Completed Tue Nov 22 03:07:10 2011 MULTI: multi_create_instance called Tue Nov 22 03:07:10 2011 Re-using SSL/TLS context Tue Nov 22 03:07:10 2011 Control Channel MTU parms [ L:1543 D:168 EF:68 EB:0 ET:0 EL:0 ] Tue Nov 22 03:07:10 2011 Data Channel MTU parms [ L:1543 D:1450 EF:43 EB:4 ET:0 EL:0 ] Tue Nov 22 03:07:10 2011 Local Options hash (VER=V4): 'c413e92e' Tue Nov 22 03:07:10 2011 Expected Remote Options hash (VER=V4): 'd8421bb0' Tue Nov 22 03:07:10 2011 TCP connection established with [AF_INET]10.0.0.9:47808 Tue Nov 22 03:07:10 2011 TCPv4_SERVER link local: [undef] Tue Nov 22 03:07:10 2011 TCPv4_SERVER link remote: [AF_INET]10.0.0.9:47808 Tue Nov 22 03:07:11 2011 10.0.0.9:47808 TLS: Initial packet from [AF_INET]10.0.0.9:47808, sid=a2cd4052 84b47108 Tue Nov 22 03:07:11 2011 10.0.0.9:47808 TLS_ERROR: BIO read tls_read_plaintext error: error:140890C7:SSL routines:SSL3_GET_CLIENT_CERTIFICATE:peer did not return a certificate Tue Nov 22 03:07:11 2011 10.0.0.9:47808 TLS Error: TLS object -> incoming plaintext read error Tue Nov 22 03:07:11 2011 10.0.0.9:47808 TLS Error: TLS handshake failed Tue Nov 22 03:07:11 2011 10.0.0.9:47808 Fatal TLS error (check_tls_errors_co), restarting Tue Nov 22 03:07:11 2011 10.0.0.9:47808 SIGUSR1[soft,tls-error] received, client-instance restarting Tue Nov 22 03:07:11 2011 TCP/UDP: Closing socket client log: Tue Nov 22 03:06:18 2011 OpenVPN 2.1.3 x86_64-pc-linux-gnu [SSL] [LZO2] [EPOLL] [PKCS11] [MH] [PF_INET6] [eurephia] built on Oct 22 2010 Enter Auth Username:user Enter Auth Password: Tue Nov 22 03:06:25 2011 NOTE: OpenVPN 2.1 requires '--script-security 2' or higher to call user-defined scripts or executables Tue Nov 22 03:06:25 2011 Control Channel Authentication: using 'ta.key' as a OpenVPN static key file Tue Nov 22 03:06:25 2011 Outgoing Control Channel Authentication: Using 160 bit message hash 'SHA1' for HMAC authentication Tue Nov 22 03:06:25 2011 Incoming Control Channel Authentication: Using 160 bit message hash 'SHA1' for HMAC authentication Tue Nov 22 03:06:25 2011 Control Channel MTU parms [ L:1543 D:168 EF:68 EB:0 ET:0 EL:0 ] Tue Nov 22 03:06:25 2011 Socket Buffers: R=[87380->131072] S=[16384->131072] Tue Nov 22 03:06:25 2011 Data Channel MTU parms [ L:1543 D:1450 EF:43 EB:4 ET:0 EL:0 ] Tue Nov 22 03:06:25 2011 Local Options hash (VER=V4): 'd8421bb0' Tue Nov 22 03:06:25 2011 Expected Remote Options hash (VER=V4): 'c413e92e' Tue Nov 22 03:06:25 2011 Attempting to establish TCP connection with [AF_INET]10.0.0.2:1194 [nonblock] Tue Nov 22 03:06:26 2011 TCP connection established with [AF_INET]10.0.0.2:1194 Tue Nov 22 03:06:26 2011 TCPv4_CLIENT link local: [undef] Tue Nov 22 03:06:26 2011 TCPv4_CLIENT link remote: [AF_INET]10.0.0.2:1194 Tue Nov 22 03:06:26 2011 TLS: Initial packet from [AF_INET]10.0.0.2:1194, sid=7a3c2a0f bd35bca7 Tue Nov 22 03:06:26 2011 WARNING: this configuration may cache passwords in memory -- use the auth-nocache option to prevent this Tue Nov 22 03:06:26 2011 VERIFY OK: depth=1, /C=US/ST=CA/L=SanFrancisco/O=Fort-Funston/CN=Fort-Funston_CA/[email protected] Tue Nov 22 03:06:26 2011 Validating certificate key usage Tue Nov 22 03:06:26 2011 ++ Certificate has key usage 00a0, expects 00a0 Tue Nov 22 03:06:26 2011 VERIFY KU OK Tue Nov 22 03:06:26 2011 Validating certificate extended key usage Tue Nov 22 03:06:26 2011 ++ Certificate has EKU (str) TLS Web Server Authentication, expects TLS Web Server Authentication Tue Nov 22 03:06:26 2011 VERIFY EKU OK Tue Nov 22 03:06:26 2011 VERIFY OK: depth=0, /C=US/ST=CA/L=SanFrancisco/O=Fort-Funston/CN=server/[email protected] Tue Nov 22 03:06:26 2011 Connection reset, restarting [0] Tue Nov 22 03:06:26 2011 TCP/UDP: Closing socket Tue Nov 22 03:06:26 2011 SIGUSR1[soft,connection-reset] received, process restarting Tue Nov 22 03:06:26 2011 Restart pause, 5 second(s) ^CTue Nov 22 03:06:27 2011 SIGINT[hard,init_instance] received, process exiting Does anybody know how to get openvpn-auth-ldap wirking?

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  • SQL Server 08 Express error when connecting to localhost - "Timeout expired". Works with ::1 or 127

    - by Adam A
    EDIT New info: Navigating to localhost:1434 in Chrome gives me an "ERR_EMPTY_RESPONSE", while other ports give me an "Oops! This link appears to be broken". So it seems to binding ok there? So here's my setup so far: I've configured Windows Firewall to allow TCP on 1433 and UDP on 1434. I've set up SQL Server to use any IP on Port 1433 (using the SQL Server Configuration Manager). My hosts file contains the default entries ("127.0.0.1 localhost" and "::1 localhost"). I sometimes have a debug session of Visual Web Developer running a webserver, but it's on a specific port (localhost:5XXXX). What I've tried: I CAN ping localhost in a cmd prompt. I CAN connect to the database through SSMS if I specify 127.0.0.1 or ::1 as the server name. I CAN'T connect to the database through SSMS (or ADO.NET) if I specify localhost as the server name. I've tried both Windows and SQL Authentication The error I get is the standard Can't connect to localhost. Additional Information -- Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding. (Microsoft Sql Server) Other considerations: Stopping the Visual Web Developer web server from the taskbar doesn't affect the sql problem. The SQL error log says that it's listening on some piped name url at start up (I don't see how this would affect localhost but not 127.0.0.1 though). I could probably just use 127.0.0.1 everywhere, but it scares me that localhost isn't working and I'd like to figure out why. I'm not much of a networking or sql server guy so I'm stuck. If you want me to try anything to help diagnose just put it in a comment and I'll give it a go. Netstat results: Setting SDK environment relative to C:\Program Files\Microsoft SDKs\Windows\v6.1 Targeting Windows Server 2008 x86 DEBUG C:\Program Files\Microsoft SDKs\Windows\v6.1netstat -ano | findstr 1434 UDP 0.0.0.0:1434 *:* 6868 UDP [::]:1434 *:* 6868 C:\Program Files\Microsoft SDKs\Windows\v6.1netstat -ano | findstr 1433 TCP 0.0.0.0:1433 0.0.0.0:0 LISTENING 2268 TCP 127.0.0.1:1433 127.0.0.1:50758 ESTABLISHED 2268 TCP 127.0.0.1:50758 127.0.0.1:1433 ESTABLISHED 5008 TCP [::]:1433 [::]:0 LISTENING 2268 TCP [::1]:1433 [::1]:51202 ESTABLISHED 2268 TCP [::1]:1433 [::1]:51616 ESTABLISHED 2268 TCP [::1]:51202 [::1]:1433 ESTABLISHED 5008 TCP [::1]:51616 [::1]:1433 ESTABLISHED 5008 C:\Program Files\Microsoft SDKs\Windows\v6.1 SQL Server Log File: In case it helps 2010-01-30 12:58:59.01 Server Microsoft SQL Server 2008 (SP1) - 10.0.2531.0 (Intel X86) Mar 29 2009 10:27:29 Copyright (c) 1988-2008 Microsoft Corporation Express Edition on Windows NT 6.0 (Build 6002: Service Pack 2) 2010-01-30 12:58:59.01 Server (c) 2005 Microsoft Corporation. 2010-01-30 12:58:59.01 Server All rights reserved. 2010-01-30 12:58:59.01 Server Server process ID is 2268. 2010-01-30 12:58:59.01 Server System Manufacturer: 'Dell Inc.', System Model: 'Inspiron 1545'. 2010-01-30 12:58:59.01 Server Authentication mode is MIXED. 2010-01-30 12:58:59.02 Server Logging SQL Server messages in file 'c:\Program Files\Microsoft SQL Server\MSSQL10.SQLEXPRESS\MSSQL\Log\ERRORLOG'. 2010-01-30 12:58:59.02 Server This instance of SQL Server last reported using a process ID of 7396 at 1/30/2010 12:57:38 PM (local) 1/30/2010 5:57:38 PM (UTC). This is an informational message only; no user action is required. 2010-01-30 12:58:59.02 Server Registry startup parameters: -d c:\Program Files\Microsoft SQL Server\MSSQL10.SQLEXPRESS\MSSQL\DATA\master.mdf -e c:\Program Files\Microsoft SQL Server\MSSQL10.SQLEXPRESS\MSSQL\Log\ERRORLOG -l c:\Program Files\Microsoft SQL Server\MSSQL10.SQLEXPRESS\MSSQL\DATA\mastlog.ldf 2010-01-30 12:58:59.02 Server SQL Server is starting at normal priority base (=7). This is an informational message only. No user action is required. 2010-01-30 12:58:59.02 Server Detected 2 CPUs. This is an informational message; no user action is required. 2010-01-30 12:58:59.08 Server Using dynamic lock allocation. Initial allocation of 2500 Lock blocks and 5000 Lock Owner blocks per node. This is an informational message only. No user action is required. 2010-01-30 12:58:59.17 Server Node configuration: node 0: CPU mask: 0x00000003 Active CPU mask: 0x00000003. This message provides a description of the NUMA configuration for this computer. This is an informational message only. No user action is required. 2010-01-30 12:58:59.30 spid7s Starting up database 'master'. 2010-01-30 12:58:59.41 spid7s Recovery is writing a checkpoint in database 'master' (1). This is an informational message only. No user action is required. 2010-01-30 12:58:59.67 spid7s FILESTREAM: effective level = 0, configured level = 0, file system access share name = 'SQLEXPRESS'. 2010-01-30 12:58:59.92 spid7s SQL Trace ID 1 was started by login "sa". 2010-01-30 12:58:59.94 spid7s Starting up database 'mssqlsystemresource'. 2010-01-30 12:58:59.95 spid7s The resource database build version is 10.00.2531. This is an informational message only. No user action is required. 2010-01-30 12:59:00.82 spid7s Server name is 'DELL\SQLEXPRESS'. This is an informational message only. No user action is required. 2010-01-30 12:59:00.83 Server A self-generated certificate was successfully loaded for encryption. 2010-01-30 12:59:00.84 Server Server is listening on [ 'any' 1433]. 2010-01-30 12:59:00.84 Server Server is listening on [ 'any' 1433]. 2010-01-30 12:59:00.84 spid10s Starting up database 'model'. 2010-01-30 12:59:00.85 Server Server local connection provider is ready to accept connection on [ \\.\pipe\SQLLocal\SQLEXPRESS ]. 2010-01-30 12:59:00.86 Server Server local connection provider is ready to accept connection on [ \\.\pipe\MSSQL$SQLEXPRESS\sql\query ]. 2010-01-30 12:59:00.86 Server Dedicated administrator connection support was not started because it is disabled on this edition of SQL Server. If you want to use a dedicated administrator connection, restart SQL Server using the trace flag 7806. This is an informational message only. No user action is required. 2010-01-30 12:59:00.87 Server The SQL Server Network Interface library could not register the Service Principal Name (SPN) for the SQL Server service. Error: 0x54b, state: 3. Failure to register an SPN may cause integrated authentication to fall back to NTLM instead of Kerberos. This is an informational message. Further action is only required if Kerberos authentication is required by authentication policies. 2010-01-30 12:59:00.87 spid7s Informational: No full-text supported languages found. 2010-01-30 12:59:00.87 Server SQL Server is now ready for client connections. This is an informational message; no user action is required. 2010-01-30 12:59:00.91 spid7s Starting up database 'msdb'. 2010-01-30 12:59:01.21 spid10s Clearing tempdb database. 2010-01-30 12:59:02.78 spid10s Starting up database 'tempdb'. 2010-01-30 12:59:03.30 spid13s The Service Broker protocol transport is disabled or not configured. 2010-01-30 12:59:03.30 spid13s The Database Mirroring protocol transport is disabled or not configured. 2010-01-30 12:59:03.31 spid7s Recovery is complete. This is an informational message only. No user action is required. 2010-01-30 12:59:03.31 spid13s Service Broker manager has started.

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