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• Force local IP traffic to an external interface

  - by calandoa

  I have a machine with several interfaces that I can configure as I want, for instance: eth1: 192.168.1.1 eth2: 192.168.2.2 I would like to be able to forward all the traffic to one of these local address trhough the other interface. For instance, all requests to an iperf, ftp, http server at 192.168.1.1 are not just routed internally, but forwarded through eth2 (and the external network will take care of re-routing the packet to eth1). I tried and looked at several commands, like iptables, ip route, etc... but nothing worked. The closest behavior I could get was done with: ip route change to 192.168.1.1/24 dev eth2 which send all 192.168.1.x on eth2, except for 192.168.1.1 which is still routed internally. The goal of this setup is to do interface driver testing without using two PCs. I am using Linux, but if you know how to do that with Windows, I'll buy it!

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• Cisco ASA 5505 and slow download speeds for Apple devices

  - by James

  For traffic routing through my ASA 5505, downloads for all Apple devices, including AppleTV iPad gen 1 IMac MacBook Pro are very slow. speedof.me show less than 1 Mbps download (where I should have 20 Mbps +), yet for any Windows-based device, the download speeds are in excess of 20 Mbps. The Windows device, including the iMac and MacBook Pro machines, are connected via ethernet cable. Why are Apple devices experiencing such pain? Is it an ASA setting, or something else? Thanks.

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• MX record configuration for hosted email?

  - by Paul Sanwald

  I am helping a friend with his website, and am having a problem with his webmail configuration, which I suspect is due to a misconfigured MX record. His domain is registered and hosted by hostmonster, they have a webmail option. A record: Host Points To TTL webmail 12.345.789.101 14400 CNAME: mail webmail.d.com 14400 MX Record: 0 @ mail.d.com 14400 I've created an email account on hostmonster, [email protected]: however, when I sent an email to this account, it appears to be routing to /dev/null. I know that it's not actually, but am unsure of the steps I can take to track this down? I've tried using dig, but am unsure where to start. How can I track down where this email is being routed to?

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• L2TP server - site-to-site vpn connection

  - by Pyro

  I am not sure this is the right place for this question but here goes. We want to connect users using an L2TP VPN connection to a users at the other end of a SonicWall site-to-site VPN. Currently we have a SonicWall firewall/router contraption in the home-office that is connected to a far-office over a VPN. Communications with machines in the home-office and far-office is fine. We also have an L2TP server running on the SonicWall that outside users can connect to. This gives them access to machines in the home-office. Communication between outside users and the home-office is fine. However outside users connected to the home-office via the L2TP server can't communicate with machines in the far-office. Will there need to be network bridging or routing needed? Or will this simply be a firewall setting to get this working? Thanks for any help or clues you provide! Rob

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• php-fpm + persistent sockets = 502 bad gateway

  - by leeoniya

  Put on your reading glasses - this will be a long-ish one. First, what I'm doing. I'm building a web-app interface for some particularly slow tcp devices. Opening a socket to them takes 200ms and an fwrite/fread cycle takes another 300ms. To reduce the need for both of these actions on each request, I'm opening a persistent tcp socket which reduces the response time by the aforementioned 200ms. I was hoping PHP-FPM would share the persistent connections between requests from different clients (and indeed it does!), but there are some issues which I havent been able to resolve after 2 days of interneting, reading logs and modifying settings. I have somewhat narrowed it down though. Setup: Ubuntu 13.04 x64 Server (fully updated) on Linode PHP 5.5.0-6~raring+1 (fpm-fcgi) nginx/1.5.2 Relevent config: nginx worker_processes 4; php-fpm/pool.d pm = dynamic pm.max_children = 2 pm.start_servers = 2 pm.min_spare_servers = 2 Let's go from coarse to fine detail of what happens. After a fresh start I have 4x nginx processes and 2x php5-fpm processes waiting to handle requests. Then I send requests every couple seconds to the script. The first take a while to open the socket connection and returns with the data in about 500ms, the second returns data in 300ms (yay it's re-using the socket), the third also succeeds in about 300ms, the fourth request = 502 Bad Gateway, same with the 5th. Sixth request once again returns data, except now it took 500ms again. The process repeats for several cycles after which every 4 requests result in 2x 502 Bad Gateways and 2x 500ms Data responses. If I double all the fpm pool values and have 4x php-fpm processes running, the cycles settles in with 4x successful 500ms responses followed by 4x Bad Gateway errors. If I don't use persistent sockets, this issue goes away but then every request is 500ms. What I suspect is happening is the persistent socket keeps each php-fpm process from idling and ties it up, so the next one gets chosen until none are left and as they error out, maybe they are restarted and become available on the next round-robin loop ut the socket dies with the process. I haven't yet checked the 'slowlog', but the nginx error log shows lots of this: *188 recv() failed (104: Connection reset by peer) while reading response header from upstream, client:... All the suggestions on the internet regarding fixing nginx/php-fpm/502 bad gateway relate to high load or fcgi_pass misconfiguration. This is not the case here. Increasing buffers/sizes, changing timeouts, switching from unix socket to tcp socket for fcgi_pass, upping connection limits on the system....none of this stuff applies here. I've had some other success with setting pm = ondemand rather than dynamic, but as soon as the initial fpm-process gets killed off after idling, the persistent socket is gone for all subsequent php-fpm spawns. For the php script, I'm using stream_socket_client() with a STREAM_CLIENT_PERSISTENT flag. A while/stream_select() loop to detect socket data and fread($sock, 4096) to grab the data. I don't call fclose() obviously. If anyone has some additional questions or advice on how to get a persistent socket without tying up the php-fpm processes beyond the request completion, or maybe some other things to try, I'd appreciate it. some useful links: Nginx + php-fpm - recv() error Nginx + php-fpm "504 Gateway Time-out" error with almost zero load (on a test-server) Nginx + PHP-FPM "error 104 Connection reset by peer" causes occasional duplicate posts http://www.linuxquestions.org/questions/programming-9/php-pfsockopen-552084/ http://stackoverflow.com/questions/14268018/concurrent-use-of-a-persistent-php-socket http://devzone.zend.com/303/extension-writing-part-i-introduction-to-php-and-zend/#Heading3 http://stackoverflow.com/questions/242316/how-to-keep-a-php-stream-socket-alive http://php.net/manual/en/install.fpm.configuration.php https://www.google.com/search?q=recv%28%29+failed+%28104:+Connection+reset+by+peer%29+while+reading+response+header+from+upstream+%22502%22&ei=mC1XUrm7F4WQyAHbv4H4AQ&start=10&sa=N&biw=1920&bih=953&dpr=1

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• Configuring NAT and static IP on Cisco 877W

  - by David M Williams

  Hi all, I'm having trouble setting up a static IP reservation on a network. What I want to do is assign IP 192.168.1.105 to MAC address 00:21:5d:2f:58:04 and then port forward 35394 to it. If it helps, output from show ver says Cisco IOS software, C870 software (C870-ADVSECURITYK9-M), version 12.4(4)T7, release software (fc1) ROM: System bootstrap, version 12.3(8r)YI4, release software I have done this - service dhcp ip routing ip dhcp excluded-address 192.168.1.1 192.168.1.99 ip dhcp excluded-address 192.168.1.200 192.168.1.255 ip dhcp pool ClientDHCP network 192.168.1.0 255.255.255.0 default-router 192.168.1.1 dns-server 192.168.1.1 lease 7 ip dhcp pool NEO host 192.168.1.105 255.255.255.0 hardware-address 0021.5D2F.5804 ip nat inside source static tcp 192.168.1.105 35394 <PUBLIC_IP> 35394 extendable However, the machine is getting assigned IP address 192.168.1.101 not .105 ... any suggestions? Thanks !

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• Simple, manageable DNS on EC2?

  - by dkulchenko

  I'm working on a large network of servers sitting on EC2, and need a way for the servers to know about each other's locations in the cloud. I thought the simplest way would be to use DNS, because if I replace the EC2 instance, I simply update the DNS record, and the rest of the servers will know about it (with names like users.db.mysoft.com, routing.mysoft.com, cluster1.memcached.mysoft.com). I'm considering setting up a master DNS server on a micro/small instance to accommodate this. I'd preferably need something that's as simple as a key-value store (hostname - IP) into which the platform could remotely add/remove entries. Can I do this with BIND? Or is there a better solution?

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• dns server bind is not work

  - by milad

  I just installed bind on RHEL 6 and point a domain to that server. but actually when i ping domain it returns error 1214: Here is my named.conf: // // named.conf // // Provided by Red Hat bind package to configure the ISC BIND named(8) DNS // server as a caching only nameserver (as a localhost DNS resolver only). // // See /usr/share/doc/bind*/sample/ for example named configuration files. // options { listen-on port 53 { any; }; listen-on-v6 port 53 { ::1; }; directory "/var/named"; dump-file "/var/named/data/cache_dump.db"; statistics-file "/var/named/data/named_stats.txt"; memstatistics-file "/var/named/data/named_mem_stats.txt"; allow-query { any; }; recursion yes; dnssec-enable yes; dnssec-validation yes; dnssec-lookaside auto; /* Path to ISC DLV key */ bindkeys-file "/etc/named.iscdlv.key"; managed-keys-directory "/var/named/dynamic"; }; logging { channel default_debug { file "data/named.run"; severity dynamic; }; }; zone "." IN { type hint; file "named.ca"; }; include "/etc/named.rfc1912.zones"; include "/etc/named.root.key"; zone "mydomain.com"{ type master; file "/var/named/data/named.mydomain.com"; allow-update { none; }; };` AND The content of "/var/named/data/named.mydomain.com": $TTL 38400 mydomain.com. IN SOA ns1.mydomain.com. milad.yahoo.com. ( 2012101201 ; serial number YYMMDDNN 28800 ; Refresh 7200 ; Retry 864000 ; Expire 38400 ; Min TTL ) mydomain.com. IN A 1.2.3.4 www IN A 1.2.3.4 ns1.mydomain.com. IN A 1.2.3.4 ns2.mydomain.com. IN A 1.2.3.4 mydomain.com. IN NS ns1.mydomain.com. mydomain.com. IN NS ns2.mydomain.com. AND i'm sure the named service is running: [root@server ~]# service named status version: 9.8.2rc1-RedHat-9.8.2-0.10.rc1.el6_3.3 CPUs found: 8 worker threads: 8 number of zones: 20 debug level: 0 xfers running: 0 xfers deferred: 0 soa queries in progress: 0 query logging is OFF recursive clients: 0/0/1000 tcp clients: 0/100 server is up and running named (pid 26299) is running... Thanks for your answers. i know that the ping is not the job of bind, i use it just to check whether domain is pointed to host or not.(ping is open in my server as i got reply in pinging ip) i use network-tools.com to ping domain. here the output of dig utility: dig mydomain.com ; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.10.rc1.el6_3.3 <<>> mydomain.com ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 6806 ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;mydomain.com. IN A ;; Query time: 321 msec ;; SERVER: 5.6.7.8#53(5.6.7.8)##note that 5.6.7.8 is my idc dns ip ;; WHEN: Sun Oct 14 23:53:47 2012

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• Shrew VPN Client gives default route- changing the policy stops me from accessing VPN network

  - by Lock

  I am using the shrew client to connect to what I believe is a Netscreen VPN. Now, when connected, the client adds the VPN as the default route. I do not want this- there is only 1 network behind the VPN that I need to access. I found that with the shrew client, you can change the "Policy" settings on the connection, and can add your own networks in that should tunnel over the VPN. I do this, and add my network in, but when I connect the VPN, I get nothing. Can't access the network. Any idea why this would be? I can see my network in the routing table, and its correctly pointing to the correct gateway. A traceroute shows all time-outs, so I can't be 100% sure that it is trying to tunnel over the VPN. Any idea how I can troubleshoot this?

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• Wall jacks to patch panel?

  - by rj454me

  OK, I'm by no means a seasoned networking pro and I had no say so in the design of our current server room which is in dire need of an extreme makeover. Basically, in our server room we have 12 wall plates with 4 RJ-45 ports on each - 48 total RJ-45 ports. From these 48 ports is a spaghetti bowl of network cables feeding our servers located in a rack - there is no patch panel currently, just straight from the wall jack to each server. What I was wondering is, is it feasible to mount a 48 port patch panel in our server rack and feed into this patch panel from the wall jacks (of course nicely routing this cable through some new cable trays)? We really don't have the funds to mount the patch panel and have it fed directly from the switches in the telcom closet which is several hundred feet away. Current: Switch (Telcom Closet) - Wall Jacks - Servers Proposed: Switch (Telcom Closet) - Wall Jacks - Patch Panel - Servers

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• Configure IIS 7 Reverse Proxy to connect to TeamCity Tomcat

  - by Cynicszm

  We have an IIS 7 webserver configured and would like to create a reverse proxy for a TeamCity installation using Tomcat on the same machine. The IIS server site is https://somesite and I would like the TeamCity to appear as https://somesite/teamcity redirecting to http://localhost:portnumber I have installed the IIS URL Rewrite extension from http://www.iis.net/download/URLRewrite and the Application Request Routing from http://www.iis.net/download/ApplicationRequestRouting to try and setup a reverse proxy but can't get it working. The closest answer I found is an old StackOverflow question http://stackoverflow.com/questions/331755/how-do-i-setup-teamcity-for-public-access-over-https which unfortunately doesn't have a working example. I've searched a quite a bit but can't seem to find a relevant example. Any help appreciated (apologies for the bold but the spam prevention won't let me post more than 1 hyperlink)

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• How can I fix my Virtual PC 2007 network configuration

  - by DanJ

  Hi, I have installed Windows Virtual PC 2007 on my Windows 2003 R2 Server. I have installed a virtual Windows XP. I have configured the virtual PC to use Shared Networking (NAT) I have disabled the firewall on the virtual windows XP The problem: I am unable to PING from Windows 2003 (the host) to the Windows XP (virtual) I do have normal traffic from the virtual to the internet Could this problem be related to routing? How I can I fix this network configuration to allow for the following traffic: 1. From Virtual to Internet 2. From Host to Virtual 3. If possible, from Internet to Virtual on pre-defined ports (port forwarding?) Thanks

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• Dual WAN port on a WRT54GL

  - by pufferfish

  Is it possible to reconfigure one of the LAN ports on a WRT54GL (running Tomato firmware) to act as a second WAN port? I have the following networks: PPOE connection to ADSL modem (works fine on the normal WAN port) WiFi neighbourhood network (in 178.X.X.X range), via a Mikrotik routerboard which I'd like to put on the WAN side of the router. I'd then like to set up routing so than some traffic (172.X.X.X) is routed to the Mikrotik and the rest to the ADSL modem. p.s. for practical reasons, I can't use the Mikrotik as the firewall/router. Edit: It seems this can be done by editing iptables, can someone tell me exactly how?

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• Where can I find "system proxy settings"?

  - by Rookie

  Where are these system proxy settings? I noticed my connection has been slow for a while, then I checked the connection settings and was surprised there were set a proxy, but I cant see what exactly it is using. Where can I check which IP it was routing the connection for me ? Here is what I saw from Firefox (12.0) options: http://img12.imageshack.us/img12/4370/sysproxy.png As far as I can remember, it has always been "no proxy" and not "system proxy". Unless new firefox version has set that "system proxy" to default?

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• Iptables massive 1:1 NAT

  - by TiFFolk

  I have to connect two LANs: LAN1: 10.10.0.0/16 and LAN2: 192.168.0.0/16. I can't do simple routing, because 192.168.0.0/16 net is prohibited in LAN1, so I am thinking of using Full cone nat (1:1) to translate 192.168.x.y/16 to 10.11.x.y/16. Each translation is done by this rules: iptables -t nat -A PREROUTING -d 10.11.0.0/16 -j DNAT --to-destination 192.168.0.0/16 iptables -t nat -A POSTROUTING -s 192.168.0.0/16 -j SNAT --to-source 10.11.0.0/16 But I will have to enter 254*254*2 rules, what will, I think, result in enormous performance degradation. So, is there a way to write such one-to-one translation with minimum number of rules?

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• How to set up Windows server 2008 to receive email?

  - by Saul

  First off apologies, I'm from a medical background not a networking one, but I've got roped into setting up a windows 2008 server. So far web server running, fixed IP address assigned (within a large private network of the National Health Service in the UK if that makes any difference) and the network team have assigned a DNS entry for me which works, so the server can be addressed as nww.myserver.nhs.uk I've only got ports open on the router for 80 and 443 (http and https) at the moment, so presume I need a different port to enable email services. My need is to be able to accept an email to the domain name like [email protected] in order to pick up a confirmation mail from an SSL issuer (Comodo) I guess to confirm that I control the domain. After that I don't actually need mail services on the server. I see lots of stuff about setting up SMTP services but thought that was about mail out and re-routing, but how do you get the server to "listen" for mail to the domain (assuming I open port xyz or whatever it is) ?

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• OpenBSD in a virtual box as a firewall

  - by Ali

  Is there any merit in installing a virtual machine with OpenBSD and pf (or any other simple and secure OS + iptable) on a mac laptop and routing all the traffic through that machine? I read a similar set up for corporate laptops running windows (I thing I read this in BSD magazine). They claim that Windows machines are too hard to secure and if you are taking them to the wild (public wireless, hotels, ...) you'd better but a secure OS in between! If you think this is a good idea, how you route all the traffic on a mac through the virtual machine and prevent any application or service to go directly? I am not sure if just setting the gateway will do that, what about DNS? you don't want anybody to fool you with DNS cache poisoning or similar attacks either.

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• I need a server or service that reroutes DNS requests

  - by Relentim

  We have two external servers, Dev and Prod. We are a software house and in the code we have a subdomain metrics.company.com that points to Prod. Development is continuous and our internal and external developers and testers will need to switch from Dev to Prod and back again. It is not an option to have a different sub domain in the code during development and change this for production. The way we wish to switch between Dev and Prod is to use DNS. We need a public DNS server that behaves normally apart from routing metrics.company.com to Dev. The users will be able to swap their DNS back and forward to hit the different servers. What is the easiest way to do this? Is there a company that hosts this service or am I going to have to rent a server and set it up myself? Any help would be much appreciated.

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• OpenVPN stopped working, what could have happened?

  - by jaja

  I have Openvpn, and it worked great when I used it on PC (Windows 8), then I copied all files (Certificates and config) to an Android 4 phone to use them. Now, Openvpn works on the phone, but not the PC. Specifically, when I open Google I get: The server at www.google.com can't be found, because the DNS lookup failed, but the VPN seems to be connected. I have a simple question, could the problem be because I copied the same files? Routing table before connecting:- IPv4 Route Table =========================================================================== Active Routes: Network Destination Netmask Gateway Interface Metric 0.0.0.0 0.0.0.0 192.168.1.254 192.168.1.101 25 127.0.0.0 255.0.0.0 On-link 127.0.0.1 306 127.0.0.1 255.255.255.255 On-link 127.0.0.1 306 127.255.255.255 255.255.255.255 On-link 127.0.0.1 306 192.168.1.0 255.255.255.0 On-link 192.168.1.101 281 192.168.1.101 255.255.255.255 On-link 192.168.1.101 281 192.168.1.255 255.255.255.255 On-link 192.168.1.101 281 224.0.0.0 240.0.0.0 On-link 127.0.0.1 306 224.0.0.0 240.0.0.0 On-link 192.168.1.101 281 255.255.255.255 255.255.255.255 On-link 127.0.0.1 306 255.255.255.255 255.255.255.255 On-link 192.168.1.101 281 =========================================================================== Routing table after connecting:- IPv4 Route Table =========================================================================== Active Routes: Network Destination Netmask Gateway Interface Metric 0.0.0.0 0.0.0.0 192.168.1.254 192.168.1.101 25 0.0.0.0 128.0.0.0 10.8.0.5 10.8.0.6 30 10.8.0.1 255.255.255.255 10.8.0.5 10.8.0.6 30 10.8.0.4 255.255.255.252 On-link 10.8.0.6 286 10.8.0.6 255.255.255.255 On-link 10.8.0.6 286 10.8.0.7 255.255.255.255 On-link 10.8.0.6 286 **.**.***.** 255.255.255.255 192.168.1.254 192.168.1.101 25 127.0.0.0 255.0.0.0 On-link 127.0.0.1 306 127.0.0.1 255.255.255.255 On-link 127.0.0.1 306 127.255.255.255 255.255.255.255 On-link 127.0.0.1 306 128.0.0.0 128.0.0.0 10.8.0.5 10.8.0.6 30 192.168.1.0 255.255.255.0 On-link 192.168.1.101 281 192.168.1.101 255.255.255.255 On-link 192.168.1.101 281 192.168.1.255 255.255.255.255 On-link 192.168.1.101 281 224.0.0.0 240.0.0.0 On-link 127.0.0.1 306 224.0.0.0 240.0.0.0 On-link 192.168.1.101 281 224.0.0.0 240.0.0.0 On-link 10.8.0.6 286 255.255.255.255 255.255.255.255 On-link 127.0.0.1 306 255.255.255.255 255.255.255.255 On-link 192.168.1.101 281 255.255.255.255 255.255.255.255 On-link 10.8.0.6 286 =========================================================================== Server conf:- port 1194 proto udp dev tun ca ca.crt cert myservername.crt key myservername.key dh dh1024.pem server 10.8.0.0 255.255.255.0 ifconfig-pool-persist ipp.txt duplicate-cn keepalive 10 120 comp-lzo persist-key persist-tun status openvpn-status.log verb 3 push "redirect-gateway def1" Client conf:- client dev tun proto udp remote 89.32.148.35 1194 resolv-retry infinite nobind persist-key persist-tun mute-replay-warnings ca ca.crt cert client1.crt key client1.key verb 3 comp-lzo redirect-gateway def1 Here is the log file:- Tue Dec 18 16:34:27 2012 OpenVPN 2.2.2 Win32-MSVC++ [SSL] [LZO2] [PKCS11] built on Dec 15 2011 Tue Dec 18 16:34:27 2012 WARNING: No server certificate verification method has been enabled. See http://openvpn.net/howto.html#mitm for more info. Tue Dec 18 16:34:27 2012 NOTE: OpenVPN 2.1 requires '--script-security 2' or higher to call user-defined scripts or executables Tue Dec 18 16:34:27 2012 LZO compression initialized Tue Dec 18 16:34:27 2012 Control Channel MTU parms [ L:1542 D:138 EF:38 EB:0 ET:0 EL:0 ] Tue Dec 18 16:34:27 2012 Socket Buffers: R=[65536-65536] S=[65536-65536] Tue Dec 18 16:34:27 2012 Data Channel MTU parms [ L:1542 D:1450 EF:42 EB:135 ET:0 EL:0 AF:3/1 ] Tue Dec 18 16:34:27 2012 Local Options hash (VER=V4): '41690919' Tue Dec 18 16:34:27 2012 Expected Remote Options hash (VER=V4): '530fdded' Tue Dec 18 16:34:27 2012 UDPv4 link local: [undef] Tue Dec 18 16:34:27 2012 UDPv4 link remote: ..*.:1194 Tue Dec 18 16:34:27 2012 TLS: Initial packet from ..*.:1194, sid=4d1496ad 2079a5fa Tue Dec 18 16:34:28 2012 VERIFY OK: depth=1, /C=/ST=/L=/O=/OU=/CN=/name=/emailAddress= Tue Dec 18 16:34:28 2012 VERIFY OK: depth=0, /C=/ST=/L=/O=/OU=/CN=/name=/emailAddress= Tue Dec 18 16:34:29 2012 Data Channel Encrypt: Cipher 'BF-CBC' initialized with 128 bit key Tue Dec 18 16:34:29 2012 Data Channel Encrypt: Using 160 bit message hash 'SHA1' for HMAC authentication Tue Dec 18 16:34:29 2012 Data Channel Decrypt: Cipher 'BF-CBC' initialized with 128 bit key Tue Dec 18 16:34:29 2012 Data Channel Decrypt: Using 160 bit message hash 'SHA1' for HMAC authentication Tue Dec 18 16:34:29 2012 Control Channel: TLSv1, cipher TLSv1/SSLv3 DHE-RSA-AES256-SHA, 1024 bit RSA Tue Dec 18 16:34:29 2012 [myservername] Peer Connection Initiated with ..*.:1194 Tue Dec 18 16:34:32 2012 SENT CONTROL [myservername]: 'PUSH_REQUEST' (status=1) Tue Dec 18 16:34:32 2012 PUSH: Received control message: 'PUSH_REPLY,redirect-gateway def1,route 10.8.0.1,topology net30,ping 10,ping-restart 120,ifconfig 10.8.0.6 10.8.0.5' Tue Dec 18 16:34:32 2012 OPTIONS IMPORT: timers and/or timeouts modified Tue Dec 18 16:34:32 2012 OPTIONS IMPORT: --ifconfig/up options modified Tue Dec 18 16:34:32 2012 OPTIONS IMPORT: route options modified Tue Dec 18 16:34:32 2012 ROUTE default_gateway=192.168.1.254 Tue Dec 18 16:34:32 2012 TAP-WIN32 device [Local Area Connection] opened: \.\Global{F0CFEBBF-9B1B-4CFB-8A82-027330974C30}.tap Tue Dec 18 16:34:32 2012 TAP-Win32 Driver Version 9.9 Tue Dec 18 16:34:32 2012 TAP-Win32 MTU=1500 Tue Dec 18 16:34:32 2012 Notified TAP-Win32 driver to set a DHCP IP/netmask of 10.8.0.6/255.255.255.252 on interface {F0CFEBBF-9B1B-4CFB-8A82-027330974C30} [DHCP-serv: 10.8.0.5, lease-time: 31536000] Tue Dec 18 16:34:32 2012 Successful ARP Flush on interface [26] {F0CFEBBF-9B1B-4CFB-8A82-027330974C30} Tue Dec 18 16:34:37 2012 TEST ROUTES: 2/2 succeeded len=1 ret=1 a=0 u/d=up Tue Dec 18 16:34:37 2012 C:\WINDOWS\system32\route.exe ADD ..*. MASK 255.255.255.255 192.168.1.254 Tue Dec 18 16:34:37 2012 ROUTE: CreateIpForwardEntry succeeded with dwForwardMetric1=25 and dwForwardType=4 Tue Dec 18 16:34:37 2012 Route addition via IPAPI succeeded [adaptive] Tue Dec 18 16:34:37 2012 C:\WINDOWS\system32\route.exe ADD 0.0.0.0 MASK 128.0.0.0 10.8.0.5 Tue Dec 18 16:34:37 2012 ROUTE: CreateIpForwardEntry succeeded with dwForwardMetric1=30 and dwForwardType=4 Tue Dec 18 16:34:37 2012 Route addition via IPAPI succeeded [adaptive] Tue Dec 18 16:34:37 2012 C:\WINDOWS\system32\route.exe ADD 128.0.0.0 MASK 128.0.0.0 10.8.0.5 Tue Dec 18 16:34:37 2012 ROUTE: CreateIpForwardEntry succeeded with dwForwardMetric1=30 and dwForwardType=4 Tue Dec 18 16:34:37 2012 Route addition via IPAPI succeeded [adaptive] Tue Dec 18 16:34:37 2012 C:\WINDOWS\system32\route.exe ADD 10.8.0.1 MASK 255.255.255.255 10.8.0.5 Tue Dec 18 16:34:37 2012 ROUTE: CreateIpForwardEntry succeeded with dwForwardMetric1=30 and dwForwardType=4 Tue Dec 18 16:34:37 2012 Route addition via IPAPI succeeded [adaptive] Tue Dec 18 16:34:37 2012 Initialization Sequence Completed

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• DNS and IPs - Does DNS send the IP back to the client?

  - by Josh

  I ran across a site that talked about routing all cients requesting by IP to a "dead end." The clients accessing the site via ip it claimed were typically automated exploit tools and bots. Legitimate users type in the web address by it's domain question. With this context in mind, I don't really understand how DNS really works. I thought it worked by sending an IP back to a client for the requested DNS (like a phone book.) The client then uses the IP to access the site. The information above seems to indicate I misunderstand this. Can someone clarify this? (http://technet.microsoft.com/en-us/magazine/2005.01.hackerbasher.aspx)

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• Disabling at application level a nic (network interface) on Windows

  - by Leandro

  How can I disable at application level a network interface? The main question is this: If I disable the nic trough wmic (win7) or devcon (XP), the "plug and play" of a wired nic doesn't work any more. For example, if the user put the cable on a disabled nic, the OS doesn't know about it. So I need to persist the enable condition but disabling the networking like a disable nic. There's some API, network configuration (routing, changing ip, changing gateway, any), .NET Framework resource (Only NetFramework 2.0) or do you can think in any workaround to do this? Suggest and ideas also will be treated as a solution. Thanks and kind regards.

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• Juniper SRX1400 VPN

  - by ank

  I have been trying to set up a client VPN on a Juniper SRX1400 without much success. All documentation I found from Juniper and elsewhere does a lot of other (difficult and wonderful) things other than the simple things I want to do. We already have a VPN running on CISCO PIX hardware which we need to put to rest and we pretty much like to replicate the functionality, which is: 1) client makes a request to the outside interface of the SRX1400, 2) client gets authenticated, 3) if successful, then client is assigned all the usual DHCP stuff and becomes part of the network. What privileges this DHCP assigned network has, should be configurable of course with the usual routing/filtering methods. Am I asking for too much from the SRX for this kind of thing? Should I ditch the SRX for VPN and revert to an OpenVPN solution that I had working some time back also and was amazed at the ease of configuration, functionality and features?

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• Using a MiFi via WDS

  - by Joril

  I have a Huawei R201 MiFi connected to the internet, and I'd like to use its internet connection even from devices that don't have WiFi, so I grabbed a wireless router I had lying around and configured WDS so that it'd connect to the MiFi, and this is working nicely (I can ping the MiFi from the router web interface). The next step was connecting my PC to the router via ethernet cable, but now I'm stuck... The PC can ping the router, but not the MiFi (they're all on the same subnet). Since the router can ping the MiFi, I guess this is some kind of routing issue? Should I get a more "flexible" router, such as one with DD-WRT maybe? Is what I'm trying to do even possible? (For the record the PC is running Lubuntu 11.10)

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• Only One GPU Detected in the Nvidia Quadra NVS 450

  - by Kyle Brandt

  I just built myself an new workstation and now only 2 of 3 monitors are working. I built the nvidia driver by downloading it and installing with ./Nvidia... Before when I ran nvidia-settings I saw two GPUs listed but now I only see one. Xorg Config (Not sure how I ended up with 3 devices in there): # nvidia-settings: X configuration file generated by nvidia-settings # nvidia-settings: version 256.35 (buildmeister@builder101) Wed Jun 16 19:25:39 PDT 2010 Section "ServerLayout" # Removed Option "Xinerama" "1" Identifier "Layout0" Screen 0 "Screen0" 0 0 Screen 1 "Screen1" RightOf "Screen0" InputDevice "Keyboard0" "CoreKeyboard" InputDevice "Mouse0" "CorePointer" Option "Xinerama" "0" EndSection Section "Files" EndSection Section "InputDevice" # generated from default Identifier "Mouse0" Driver "mouse" Option "Protocol" "auto" Option "Device" "/dev/psaux" Option "Emulate3Buttons" "no" Option "ZAxisMapping" "4 5" EndSection Section "InputDevice" # generated from default Identifier "Keyboard0" Driver "kbd" EndSection Section "Monitor" # HorizSync source: edid, VertRefresh source: edid Identifier "Monitor0" VendorName "Unknown" ModelName "DELL E207WFP" HorizSync 30.0 - 83.0 VertRefresh 56.0 - 75.0 Option "DPMS" EndSection Section "Monitor" # HorizSync source: edid, VertRefresh source: edid Identifier "Monitor1" VendorName "Unknown" ModelName "DELL E207WFP" HorizSync 30.0 - 83.0 VertRefresh 56.0 - 75.0 Option "DPMS" EndSection Section "Monitor" # HorizSync source: edid, VertRefresh source: edid Identifier "Monitor2" VendorName "Unknown" ModelName "DELL E207WFP" HorizSync 30.0 - 83.0 VertRefresh 56.0 - 75.0 Option "DPMS" EndSection Section "Device" Identifier "Device0" Driver "nvidia" VendorName "NVIDIA Corporation" BoardName "Quadro NVS 450" BusID "PCI:6:0:0" EndSection Section "Device" Identifier "Device1" Driver "nvidia" VendorName "NVIDIA Corporation" BoardName "Quadro NVS 450" BusID "PCI:5:0:0" EndSection Section "Device" Identifier "Device2" Driver "nvidia" VendorName "NVIDIA Corporation" BoardName "Quadro NVS 450" BusID "PCI:3:0:0" EndSection Section "Screen" # Removed Option "TwinView" "0" # Removed Option "metamodes" "DFP-0: nvidia-auto-select +0+0" # Removed Option "metamodes" "DFP-0: nvidia-auto-select +0+275, DFP-3: nvidia-auto-select +1680+0" Identifier "Screen0" Device "Device0" Monitor "Monitor0" DefaultDepth 24 Option "TwinView" "1" Option "TwinViewXineramaInfoOrder" "DFP-3" Option "metamodes" "DFP-0: nvidia-auto-select +0+0, DFP-3: nvidia-auto-select +1680+0" SubSection "Display" Depth 24 EndSubSection EndSection Section "Screen" # Removed Option "metamodes" "DFP-3: nvidia-auto-select +0+0" Identifier "Screen1" Device "Device1" Monitor "Monitor1" DefaultDepth 24 Option "TwinView" "0" Option "metamodes" "nvidia-auto-select +0+0" SubSection "Display" Depth 24 EndSubSection EndSection Section "Screen" Identifier "Screen2" Device "Device2" Monitor "Monitor2" DefaultDepth 24 Option "TwinView" "0" Option "metamodes" "nvidia-auto-select +0+0" SubSection "Display" Depth 24 EndSubSection EndSection lscpi: 00:00.0 Host bridge: Intel Corporation 5520/5500/X58 I/O Hub to ESI Port (rev 13) 00:01.0 PCI bridge: Intel Corporation 5520/5500/X58 I/O Hub PCI Express Root Port 1 (rev 13) 00:02.0 PCI bridge: Intel Corporation 5520/5500/X58 I/O Hub PCI Express Root Port 2 (rev 13) 00:03.0 PCI bridge: Intel Corporation 5520/5500/X58 I/O Hub PCI Express Root Port 3 (rev 13) 00:10.0 PIC: Intel Corporation 5520/5500/X58 Physical and Link Layer Registers Port 0 (rev 13) 00:10.1 PIC: Intel Corporation 5520/5500/X58 Routing and Protocol Layer Registers Port 0 (rev 13) 00:11.0 PIC: Intel Corporation 5520/5500 Physical and Link Layer Registers Port 1 (rev 13) 00:11.1 PIC: Intel Corporation 5520/5500 Routing & Protocol Layer Register Port 1 (rev 13) 00:13.0 PIC: Intel Corporation 5520/5500/X58 I/O Hub I/OxAPIC Interrupt Controller (rev 13) 00:14.0 PIC: Intel Corporation 5520/5500/X58 I/O Hub System Management Registers (rev 13) 00:14.1 PIC: Intel Corporation 5520/5500/X58 I/O Hub GPIO and Scratch Pad Registers (rev 13) 00:14.2 PIC: Intel Corporation 5520/5500/X58 I/O Hub Control Status and RAS Registers (rev 13) 00:15.0 PIC: Intel Corporation 5520/5500/X58 Trusted Execution Technology Registers (rev 13) 00:1a.0 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #4 00:1a.1 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #5 00:1a.2 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #6 00:1a.7 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB2 EHCI Controller #2 00:1b.0 Audio device: Intel Corporation 82801JI (ICH10 Family) HD Audio Controller 00:1c.0 PCI bridge: Intel Corporation 82801JI (ICH10 Family) PCI Express Root Port 1 00:1c.1 PCI bridge: Intel Corporation 82801JI (ICH10 Family) PCI Express Port 2 00:1c.3 PCI bridge: Intel Corporation 82801JI (ICH10 Family) PCI Express Root Port 4 00:1c.4 PCI bridge: Intel Corporation 82801JI (ICH10 Family) PCI Express Root Port 5 00:1d.0 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #1 00:1d.1 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #2 00:1d.2 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #3 00:1d.7 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB2 EHCI Controller #1 00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev 90) 00:1f.0 ISA bridge: Intel Corporation 82801JIR (ICH10R) LPC Interface Controller 00:1f.2 IDE interface: Intel Corporation 82801JI (ICH10 Family) 4 port SATA IDE Controller #1 00:1f.3 SMBus: Intel Corporation 82801JI (ICH10 Family) SMBus Controller 00:1f.5 IDE interface: Intel Corporation 82801JI (ICH10 Family) 2 port SATA IDE Controller #2 01:00.0 IDE interface: Device 1b4b:91a3 (rev 11) 02:00.0 USB Controller: NEC Corporation Device 0194 (rev 03) 03:00.0 PCI bridge: nVidia Corporation PCI express bridge for Quadro Plex S4 / Tesla S870 / Tesla S1070 (rev a3) 04:00.0 PCI bridge: nVidia Corporation PCI express bridge for Quadro Plex S4 / Tesla S870 / Tesla S1070 (rev a3) 04:02.0 PCI bridge: nVidia Corporation PCI express bridge for Quadro Plex S4 / Tesla S870 / Tesla S1070 (rev a3) 05:00.0 3D controller: nVidia Corporation G98 [Quadro NVS 450] (rev a1) 06:00.0 VGA compatible controller: nVidia Corporation G98 [Quadro NVS 450] (rev a1) 08:00.0 SATA controller: JMicron Technology Corp. JMB362/JMB363 Serial ATA Controller (rev 02) 08:00.1 IDE interface: JMicron Technology Corp. JMB362/JMB363 Serial ATA Controller (rev 02) 09:00.0 SATA controller: JMicron Technology Corp. JMB362/JMB363 Serial ATA Controller (rev 03) 09:00.1 IDE interface: JMicron Technology Corp. JMB362/JMB363 Serial ATA Controller (rev 03) 0a:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 06) 0b:06.0 FireWire (IEEE 1394): Texas Instruments TSB43AB23 IEEE-1394a-2000 Controller (PHY/Link)

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• How to fetch a cpu status thought net-snmp

  - by Steve.DC.Tang

  I want to fetch a device's cpu and memory status thought net-snmp. I get my device's info with this command: snmpwalk -v 2c -c public 210.38.xxx.xxx system And I got this info: SNMPv2-MIB::sysDescr.0 = STRING: Ruijie High-density IPv6 10G Core Routing Switch(S8606) By Ruijie Network SNMPv2-MIB::sysObjectID.0 = OID: SNMPv2-SMI::enterprises.4881.1.1.10.1.43 DISMAN-EVENT-MIB::sysUpTimeInstance = Timeticks: (1978814424) 229 days, 0:42:24.24 SNMPv2-MIB::sysContact.0 = STRING: SNMPv2-MIB::sysName.0 = STRING: S8606 SNMPv2-MIB::sysLocation.0 = STRING: SNMPv2-MIB::sysServices.0 = INTEGER: 7 Now I want to fetch the cpu status, and I search my question on Google, somebody offer a oid for query the cpu status: snmpwalk -v 2c -c public 210.38.xxx.xxx usageOfCPU But it doesn't worked : No log handling enabled - using stderr logging usageOfCPU: Unknown Object Identifier (Sub-id not found: (top) - usageOfCPU) Somebody told me some switch has its private MIB, and you can use it to see its CPU status, is that right? I hope someone can solve me question......

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