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• Problem running application on windows server 2008 instance using amazon ec2 service and WAMP

  - by Siddharth

  I have a basic (small type) windows server 2008 instance running on amazon ec2. I've installed WAMP server on to it, and have also loaded my application. I did this using Remote desktop Connection from my windows machine. I'm able to run my application locally on the instance, however when I try to access it using the public DNS given to it by amazon, from my browser, I'm unable to do so. My instance has a security group that is configured to allow HTTP, HTTPS, RDP, SSH and SMTP requests on different ports. In fact I have the exact same security group as the one used in this blog, http://howto.opml.org/dave/ec2/ I did almost everything same as the blog, except for using a different Amazon Machine Image. This is my first time using amazon ec2, and i can't figure out what I'm doing wrong here

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• Iptables remote port forwarding and dynamic remote ip

  - by lbwtz2

  Hello, I want to forward a port from my remote vps to my domestic server and I am quite a newbie with iptables. The problem is that I am using a dynamic dns service to reach my home server from the internet so I don't have a fixed ip and iptables doesn't like urls. The rules I am willing to use are these: -t nat -A PREROUTING -p tcp -i eth0 -d xxx.xxx.xxx.xxx --dport 8888 -j DNAT --to myhome.tld:80 -A FORWARD -p tcp -i eth0 -d myhome.tld --dport 80 -j ACCEPT Of course I recevie a Error BAD IP ADDRESS because of myhome.tld. What can I do?

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• Different Servers for incoming mails

  - by André

  Hi everybody, not sure if what I want is possible so I´d appreciate any pointers. I have full control over the infrastructure (DNS and servers) Currently I receive mails for domain.tld. MX record for domain.tld is gw.domain.tld. gw then does some spam and virus checking and forwards the mails to the internal exchange server. GW is a Proxmox Mail Gateway Box (Free license) Now what I want is to distribute mails for different recipients to other mail servers. Basicly I only want [email protected] and [email protected] to go to the exchange as before, but all others go to a different mail server (based on linux). Any idea how I could achieve this?

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• Access my local server by hostname or servername

  - by S.M.09

  I have a local host server hosting a few applications in tomcat which comes through a apache proxy The client or User trying to access these application has to access them like 10.XXX.XXX.XX:8080/appName OR 10.XXX.XXX.XX/appName But I want to replace the ip address with soem other name related to my applications. But I cannot go and enter the host name of the server in each users /etc/host Nor do I want to be setting up DNS. Is there another way to do this. I am using ProxyPass XXX YYY to redirect all applications of tomcat to port 80

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• Exclude pings from apache error logs (ran from PHP exec)

  - by fooraide

  Now, for a number of reasons I need to ping several hosts on a regular basis for a dashboard display. I use this PHP function to do it: function PingHost($strIpAddr) { exec(escapeshellcmd('ping -q -W 1 -c 1 '.$strIpAddr), $dataresult, $returnvar); if (substr($dataresult[4],0,3) == "rtt") { //We got a ping result, lets parse it. $arr = explode("/",$dataresult[4]); return ereg_replace(" ms","",$arr[4]); } elseif (substr($dataresult[3],35,16) == "100% packet loss") { //Host is down! return "Down"; } elseif ($returnvar == "2") { return "No DNS"; } } The problem is that whenever there is an unknown host, I will get an error logged to my apache error log (/var/log/apache/error.log). How would I go about disabling logs for this particular function ? Disabling logs in the vhost is not an option since logs for that vhost are relevant, just not the pings. Thanks,

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• SAMBA and Linux ACLs -- "Permission denied" on write to share but file written nevertheless

  - by MCH

  I set up a writable share directory "/home/net/share" with acl like this: sudo mkdir -p "/home/net/share" sudo setfacl -m "u:localuser:rwx,u:remoteuser:rwx,g:users:rwx" "/home/net/share" My /etc/samba/smb.conf looks like this: [global] workgroup = w server string = server security = user load printers = no log file = /var/log/samba/%m.log max log size = 50 dns proxy = no printing = bsd printcap name = /dev/null disable spoolss = yes encrypt passwords = true invalid users = nobody root follow symlinks = yes wide links = yes [share] comment = Writable by localuser and remoteuser path = /home/net/share valid users = remoteuser read only = no public = no printable = no Locally, localuser and remoteuser have user accounts and smbpasswds and can both read, create and delete files in /home/net/share. But when I log on from a different machine (like this: sudo mount -t cifs //server/share mountpoint/ -o username=remoteuser ), I get "Permission denied" both when trying to create directories and files, oddly though, it does create files (not directories!) despite these messages! How can I get this working?

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• MMS gets hostname from uname and can't connect to it

  - by Adam Monsen

  I'm trying to get 10gen's MongoDB Monitoring Service monitoring my 3-node replica set. The replica set running in an AWS VPC. Each node runs on a different [virtual] machine. Assume their IPs are 192.168.1.1 (primary or secondary), 192.168.1.2 (primary or secondary), 192.168.1.3 (arbiter). From a quick look at the source, MMS appears to get the hostname of the machine it is running on like so: platform.uname()[1] For my VPC EC2 instance, this returns something like ip-192-168-1-1 MMS then tries to connect to this hostname, which does not resolve. I'd rather just use IP addresses (since they're always static), but it seems like the hardcoded use of platform.uname()[1] in mmsAgent.py precludes that. So, what's an elegant way out of this? Hack /etc/hosts? I'm not setting up a DNS server just for this. Maybe I'm just misunderstanding how to configure MMS.

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• What router settings to use for wireless home network

  - by Question Overflow

  While looking at the setting of my wireless router, I am bewildered by the array of options available. Despite searching on Wikipedia to try to understand the various acronyms, I am still clueless to decide what is the best setting to use although the default works fine. Rather than calling the internet service provider (ISP) to ask them the correct settings, I hope to learn more about the differences between some of the options listed below, so that I would be able to make a more informed decision from now onwards: PPPoE vs PPPoA LLC vs VC-Mux Bridge vs Routed In addition, I would also like to know the significance of the following MTU VPI VCI And whether or when I should manually specify DNS?

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• Windows Server 2008 R2 - Can't connect RDP over the Internet

  - by Jonathan DeMarks

  I have two networks: Domain and Public, Domain is a VPN connection and Public is the local connection to the network. This is not a domain controller or a DNS/DHCP server. I can connect via RDP from the local network (192.168.1.), from the VPN network (10.1.2.), and from the VPN network over the internet. I cannot connect from the internet (anywhere besides where the server is VPN'd) Wireshark indicates that the server is getting packets, and the audit log is indicating that the packets are being dropped. Advanced Firewall has explicit options to allow RDP, and has no deny policies. I have also tried turning Firewall off completely to no avail. I'm really lost on this one.

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• Windows 2008 - Define IP Order by port or service

  - by Josh

  I have a Windows 2008 server that has three IP bound to the NIC. I can select which IP Windows SMTP listens to, but I want to also set the IP address used when mail is sent. Where would I set which outbound IP to use when sending email? Without using real IPs, here is an example what I have setup. Three IPs associated with the server: 10.0.0.1 10.0.0.2 10.0.0.3 I setup the binding on 10.0.0.2 for port 25 in the SMTP server settings, so that it is the only IP that will respond for inbound. When I look at the email header from an email sent from that server, it lists the server with an address of 10.0.0.3. I would like it to use 10.0.0.2 so that when reverse DNS is performed, it maps back correctly.

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• Virtual hosts and subdomains, need configuring on live, not on dev

  - by rix

  I have a query about subdomains and virtual hosts. On my dev server, I ca nset up a new virtual hosts and point it to a subdomain, ie: newdomain.mydevserver.com All is fine and I can access 'newdomain/mydevserver/com' I can also do 'host newdomain.mydevserver.com' However, when I do the same with my main server I get the server couldn't be contacted error - I'm guessing that's because i need a cname or a record for the DNS. My question is, why does it seem that i can create subdomains on my dev but not on my live server? Help appreciated, many thanks!

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• Own website fails to load first time

  - by AmazingDreams

  I have a website running on a VPS, every time I first try to load the website the connection times out. If I press try again, it loads directly. I'm not sure whether this is a DNS issue or a server issue. As far as I know everything is set up correctly. Also, it has been doing this from the moment I got this server and set up my domain name. And that's about two to three months ago. You may take a look here: http://www.wegotcha.nl/ As you can see at this moment it's just an image, there are no scripts running in the background or anything. The only error Apache gives me is that favicon.ico cannot be found. It's an Apache webserver running on Ubuntu 12.04.1 (newest version) I update all packages almost every day (apt-get update && apt-get upgrade). I am merely an amateur on the area of webservers so any help will be appreciated. :)

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• Virtualhosts - best way of dealing with it?

  - by axqe56

  I'm competent at the basics of Apache, PHP and virtual hosting but have a question about virtual hosting. As far as I'm aware, HOSTS files can only be in one of the following locations: C:/Windows/system32/drivers/etc (varies in older installs, I believe) I don't think it can be put elsewhere for use with Apache, simply for virtual hosts, and the main HOSTS file for blocking sites etc. I heard about PAC files on Uniform Server's website (http://wiki.uniformserver.com/index.php/Virtual_Hosting:_PAC) but they're browser-specific though, aren't they? What's the best way to deal with virtualhosts, other than HOSTS file? My server isn't currently open to the internet yet, but if it is, what's the best way to resolve DNS for my virtualhost domains if it were to become forward-facing (i.e open to the internet)?

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• why do I get this mail server configuration error?

  - by Francesco

  <<The configuration of your mail servers and your DNS are not ok! The report of the test is: mail.mydomain.com. -> mydomain.com -> 78.47.63.148 -> static.148.63.47.78.clients.your-server.de Spam recognition software and RFC821 4.3 (also RFC2821 4.3.1) state that the hostname given in the SMTP greeting MUST have an A record pointing back to the same server.>> I have a A Record that points mail.mydomain.com to 78.47.63.148 (which is my given ip address for my vps) All other records are fine, so what's wrong and what record should I create to make it right? Thanks

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• Domain redirection to port on Windows Server 2008

  - by Rauffle

  I have a Windows server running IIS. I wish to run a piece of software that hosts a web interface on a non-standard HTTP port (let's say, port 9999). I have static DNS entries on my router for two FQDNs, both of which direct to the Windows server. I wish to have requests to 'website1' to continue to go to the IIS website on port 80, but requests for 'website2' to instead go to port 9999 to be handled by the other application. How can I accomplish this? Right now I can get to the application by going to 'website1:9999' or 'website2:9999'.

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• OpenVPN IPv6 over IPv4 tunnel

  - by user66779

  Today I installed OpenVPN 2.3rc2 on both my windows 7 client machine and centos 6 server. This new version of OpenVPN provides full compatibility for IPv6. The Problem: I am currently able to connect to the server (through the IPv4 tunnel) and ping the IPv6 address which is assigned to my client and I can also ping the tun0 interface on the server. However, I cannot browse to any IPv6 websites. My vps provider has given me this: 2607:f840:0044:0022:0000:0000:0000:0000/64 is routed to this server (2607:f840:0:3f:0:0:0:eda). This is ifconfig after setup with OpenVPN running: eth0 Link encap:Ethernet HWaddr 00:16:3E:12:77:54 inet addr:208.111.39.160 Bcast:208.111.39.255 Mask:255.255.255.0 inet6 addr: 2607:f740:0:3f::eda/64 Scope:Global inet6 addr: fe80::216:3eff:fe12:7754/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:2317253 errors:0 dropped:7263 overruns:0 frame:0 TX packets:1977414 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:1696120096 (1.5 GiB) TX bytes:1735352992 (1.6 GiB) Interrupt:29 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) tun0 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 inet addr:10.8.0.1 P-t-P:10.8.0.2 Mask:255.255.255.255 inet6 addr: 2607:f740:44:22::1/64 Scope:Global UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1500 Metric:1 RX packets:739567 errors:0 dropped:0 overruns:0 frame:0 TX packets:1218240 errors:0 dropped:1542 overruns:0 carrier:0 collisions:0 txqueuelen:100 RX bytes:46512557 (44.3 MiB) TX bytes:1559930874 (1.4 GiB) So OpenVPN is sucessfully creating a tun0 interface and assigning clients IPv6 addresses using 2607:f840:44:22::/64. The first client to connect is getting 2607:f840:44:22::1000 and the second 2607:f840:44:22::1001, and so on... plus 1 each time. After connecting as the first client, I can ping from my windows client machine 2607:f740:44:22::1 and 2607:f740:44:22::1000. However, I have no access to IPv6 websites. I believe the problem is that the tun0 IPv6 addressees are not being forwarded to the eth0 interface. This is the firewall running on the server: #!/bin/sh # # iptables configuration script # # Flush all current rules from iptables # iptables -F iptables -t nat -F # # Allow SSH connections on tcp port 22 # iptables -A INPUT -i eth0 -p tcp --dport 22 -j ACCEPT iptables -A OUTPUT -o eth0 -p tcp --sport 22 -j ACCEPT # # Set access for localhost # iptables -A INPUT -i lo -j ACCEPT # # Accept connections on 1195 for vpn access from client # iptables -A INPUT -i eth0 -p udp --dport 1195 -m state --state NEW,ESTABLISHED -j ACCEPT iptables -A OUTPUT -o eth0 -p udp --sport 1195 -m state --state ESTABLISHED -j ACCEPT # # Apply forwarding for OpenVPN Tunneling # iptables -A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT iptables -A FORWARD -s 10.8.0.0/24 -j ACCEPT iptables -t nat -A POSTROUTING -o eth0 -j SNAT --to 209.111.39.160 iptables -A FORWARD -j REJECT # # Enable forwarding # echo 1 > /proc/sys/net/ipv4/ip_forward # # Set default policies for INPUT, FORWARD and OUTPUT chains # iptables -P INPUT ACCEPT iptables -P FORWARD ACCEPT iptables -P OUTPUT ACCEPT # # IPv6 # IP6TABLES=/sbin/ip6tables $IP6TABLES -F INPUT $IP6TABLES -F FORWARD $IP6TABLES -F OUTPUT echo -n "1" >/proc/sys/net/ipv6/conf/all/forwarding echo -n "1" >/proc/sys/net/ipv6/conf/all/proxy_ndp echo -n "0" >/proc/sys/net/ipv6/conf/all/autoconf echo -n "0" >/proc/sys/net/ipv6/conf/all/accept_ra $IP6TABLES -A INPUT -i eth0 -m state --state ESTABLISHED,RELATED -j ACCEPT $IP6TABLES -A INPUT -i eth0 -p tcp --dport 22 -j ACCEPT $IP6TABLES -A INPUT -i eth0 -p icmpv6 -j ACCEPT $IP6TABLES -P INPUT ACCEPT $IP6TABLES -P FORWARD ACCEPT $IP6TABLES -P OUTPUT ACCEPT Server.conf: server-ipv6 2607:f840:44:22::/64 server 10.8.0.0 255.255.255.0 port 1195 proto udp dev tun ca ca.crt cert server.crt key server.key dh dh2048.pem ifconfig-pool-persist ipp.txt push "redirect-gateway def1 bypass-dhcp" push "dhcp-option DNS 208.67.222.222" push "dhcp-option DNS 208.67.220.220" keepalive 10 60 tls-auth ta.key 0 cipher AES-256-CBC comp-lzo user nobody group nobody persist-key persist-tun status openvpn-status.log log-append openvpn.log verb 5 Client.conf: client dev tun nobind keepalive 10 60 hand-window 15 remote 209.111.39.160 1195 udp persist-key persist-tun ca ca.crt key client1.key cert client1.crt remote-cert-tls server tls-auth ta.key 1 comp-lzo verb 3 cipher AES-256-CBC I'm not sure where I am going wrong, it could be the firewall, or something missing from server or client.conf. This version of OpenVPN was only released yesterday, and there's little info on the internet about how to setup an IPv6 over IPv4 vpn tunnel. I've read the manual for this new version of OpenVPN (parts pertaining to IPv6) and it provides very little info too. Thanks for any help.

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• How to install Gitlab in a VM on a production server?

  - by Michaël Perrin

  I have a production server running Ubuntu 12.04 and I would like to install on it a VM with Gitlab (using Vagrant and Virtualbox). Let's say that the address to access Gitlab is gitlab.mydomain.com . The DNS zone has been configured to point to the IP address of the server. I want users to be able to access to Gitlab (either for pushing to a repository, or for accessing to the web interface) from the outside. The VM has been configured to have an IP address. It means that when browsing http://gitlab.mydomain.com for instance, the request has to be forwarded to the VM on the server, ie. to the VM IP address. What are the ways to configure this? Can Apache be used as a proxy? In this case, I guess it only works for HTTP requests, but not for pushing to a Git repository on the VM.

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• Extend university wifi network [migrated]

  - by asfasdoiuh ouhouhouh

  i live in a university campus and i can get wifi signal on the outside of my window but not in the house. The solution i use at the moment is a usb wifi dongle outside connected to my laptop but the lack of an internal antenna make the connection quite unreliable at times. So i was trying to find another solution to improve the reception of my network. One idea is to setup a router on the outside (in a place with stronger signal) and redirect the connection inside the house with an ethernet cable but the problem is that our Uni Wifi is managed by a capitve portal (BlueSocket with DNS redirection to login page) and the authentication has to happen on the mac address that connect to the net (so the client appliance in this case). If I use a router with Mac-Clone capability i will be able to be redirected trough the captive portal on my laptop computer and login from there or i need to setup my router to fill in the login page by itself? There are other hardware/software solutions i can use to get what i want? Thank you all

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• Is it possible to host a web server from behind a NAT

  - by iamrohitbanga

  My PC is behind a NAT router that has a public IP address. If I want to host a website then I believe I need a domain name which I can purchase from some site which would pledge to resolve all DNS requests for that domain name and send the IP address of my NAT router (assuming I do not want to host my domain name on their servers). Now I want to host a web server on my computer. What changes should be done to the NAT router's configuration to forward all HTTP requests for example.com to my PC in the internal network. Is the above strategy correct? Is it commonly used?

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• Windows 7 ipv4 autoconfiguration - cannot connect to internet

  - by GuiccoPiano

  I get my internet connection from a guy (lets call him my service provider henceforth). He gives internet connections to many students here in my hostel. My PC gets a private IP through his DHCP server. Now, when I switch on my WiFi, my PC gets a private IP as it should and I can connect to the internet just fine. But now when I connect my LAN cable, my PC gets some "Autoconfiguration IPv4 address" 169.254.110.154(Preferred) and I cannot connect to the internet. Here is the ipconfig /all output for ethernet port: Ethernet adapter Local Area Connection: Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Marvell Yukon 88E8059 PCI-E Gigabit Ethernet Controller Physical Address. . . . . . . . . : <<MAC DISPLAYED HERE>> DHCP Enabled. . . . . . . . . . . : Yes Autoconfiguration Enabled . . . . : Yes Link-local IPv6 Address . . . . . : fe80::5054:a347:7d06:6e9a%11(Preferred) Autoconfiguration IPv4 Address. . : 169.254.110.154(Preferred) Subnet Mask . . . . . . . . . . . : 255.255.0.0 Default Gateway . . . . . . . . . : DHCPv6 IAID . . . . . . . . . . . : 285222078 DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-14-50-AC-68-54-42-49-EE-52-16 DNS Servers . . . . . . . . . . . : fec0:0:0:ffff::1%1 fec0:0:0:ffff::2%1 fec0:0:0:ffff::3%1 NetBIOS over Tcpip. . . . . . . . : Enabled I also tried: Start a command prompt as admin. Run "netsh winsock reset" Run "netsh interface ipv4 reset" Run "netsh interface ipv6 reset" Restart your computer. All this does not work. Any idea to solve the problem?

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• Add a server between router and switch (production)

  - by Kossel

  I have a small office network basically like below, there are more router/pc connected in S1. As you can see, the router is doing job of DHCP, DNS. but now I wish to add a Linux server between R1 and S1, So I can monitor the network traffic and do other more advance server admin stuff. the whole office network is 192.168.1.x and people are using their computer everyday. What network configuration should the new Linux server have (both interfaces) in order to minimize the changes need in the network? tried to change R1 ip to 192.168.100.1 them add the server with FE0/0 192.168.100.1 and FE0/1 192.168.1.1 but looks cannot ping the original Router..

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• Sharepoint Document Library not receiving emails

  - by ria

  I have created a sharepoint document library which is email enabled. However when i send email to the designated email address from anywhere, i dont receive the email & attachment in the list. I have done some R&D and i hv found that in order to receive email from anywhere i have to expose my DNS of the sharepoint site to the outside world. Now i dont know whether it applies to the email address designated to me in the Active directory profile as well (my company domain email address). How to test that this email reception is working in the document library? I have tried sending an email from the sharepoint site and it works fine so the SMTP settings are correctly done.

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• If I don't want subdomains to send out email, do I need SPF records for them?

  - by Phil

  I have a main domain with (now) valid SPF record, but we also programmatically create lots and lots of subdomains for clients via cpanel PHPXML API. These subdomains are not intended to send any mail. When we create them, they are getting an A record of my ip, and a TXT record of "v=spf1 +a +mx +ip4:[MY IP] ?all". Those are all the DNS records they have Recently we have had a lot of email spoofing and realized there was an invalid (duplicate SPF) for our main domain. We just fixed that, but are unsure if: 1) Can spammers still spoof email from subdomains without MX records, with above current listed SPF? 2) Is it better to have no SPF for subdomains than the one I have listed? 3) Is there a way to prevent subdomains from sending/spoofing email via my main domain's SPF? Here is the main domain SPF that our host suggested we switch to: "v=spf1 a mx ptr a:dedrelay.[webhost].com include:dedrelay.[webhost].com ~all"

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• ubuntu server in a vm, can't connect to internet

  - by jessh

  I'm attemtping to host my own development web server in a virtual box guest, Ubuntu Server. I would like this virtual machine to be accessible from not only my home network, but outside the LAN as well. As such, I've set up a static IP (so I can later forward ports to this static IP.) My virtual box settings have this vm only using one adapter -- in bridged mode. Here's what my /etc/network/interfaces looks like: iface eth0 inet static address 10.0.1.203 /*this is outside the DHCP range*/ netmask 255.255.255.0 gateway 10.0.1.1 network 10.0.1.0 broadcast 10.0.1.255 dns-nameservers: 8.8.8.8 8.8.8.4 Here's what the output of ifconfig looks like: https://dl.dropbox.com/u/2241201/locker/ubuntu.png My Host is a mac mini, running OS X 10.7. From within the guest, if I ping google.com: $ ping google.com # outputs 'ping: unknown host google.com' immediately Why am I unable to access the web?

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• How do I now access my site for an installation

  - by user4524

  I have just rented a virtual private server with DirectAdmin. I have an ip address, lets say its: 178.239.60.18 Now I have made a new domain on the server. It resides in a folder called: example. Now when I would like to acces this in a browser, I type in 178.239.60.18/example or 178.239.60.18:example But this does not work. What am I doing wrong? When I look at the DNS record it does say the the ip address for example is 178.239.60.18

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