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• Issues printing through ssh tunnel and port forwarding

  - by simogasp

  I'm having some problems trying to print through a ssh tunnel. I'd like to print from my laptop to a network printer (Toshiba es453, for what matters) which is in a local network. I can reach the local network using a gateway. So far I did the following: ssh -N -L19100:<Printer_IP>:9100 <username>@<ssh_gateway> Basically i just mapped the port 19100 of my laptop directly to the input port of the printer, passing through the gateway. So far, so good. Then, i tried to install on my laptop a new printer with the GUI config tool of ubuntu, so that the new printer is on localhost at port 19100 (as APP Socket/HP Jet Direct) , then I provided the proper driver of the printer. In theory, once the tunnel is open I should be able to print from any program just selecting this printer. Of course, it does not work. :-) The document hangs in the queue with status Processing while in the shell where I set up the tunnel I get these errors on failing opening channels debug1: Local forwarding listening on ::1 port 19100. debug1: channel 0: new [port listener] debug1: Local forwarding listening on 127.0.0.1 port 19100. debug1: channel 1: new [port listener] debug1: Requesting [email protected] debug1: Entering interactive session. debug1: Connection to port 19100 forwarding to 195.220.21.227 port 9100 requested. debug1: channel 2: new [direct-tcpip] debug1: Connection to port 19100 forwarding to 195.220.21.227 port 9100 requested. debug1: channel 3: new [direct-tcpip] channel 2: open failed: connect failed: Connection timed out debug1: channel 2: free: direct-tcpip: listening port 19100 for 195.220.21.227 port 9100, connect from ::1 port 44434, nchannels 4 debug1: Connection to port 19100 forwarding to 195.220.21.227 port 9100 requested. debug1: channel 2: new [direct-tcpip] channel 3: open failed: connect failed: Connection timed out debug1: channel 3: free: direct-tcpip: listening port 19100 for 195.220.21.227 port 9100, connect from ::1 port 44443, nchannels 4 channel 2: open failed: connect failed: Connection timed out debug1: channel 2: free: direct-tcpip: listening port 19100 for 195.220.21.227 port 9100, connect from ::1 port 44493, nchannels 3 debug1: Connection to port 19100 forwarding to 195.220.21.227 port 9100 requested. debug1: channel 2: new [direct-tcpip] As a further debugging test I tried the following. From a machine inside the local network I did a telnet <IP_printer> 9100, got access, wrote some random thing, closed the connection and correctly I got a print of what I had written. So the port and the ip of the printer should be correct. I tried the same from my laptop with the tunnel opened, the telnet succeeded but, again, the printer didn't print anything, getting the usual channel x: open failed: errors. I'm not a great expert on the matter, I just thought that in theory it was possible to do something like that, but maybe there is something that I didn't consider or I did wrong. Any clue? Thanks! Simone [update] As further debugging test, I tried to replicate the procedure from a machine in the local network. From that machine, I did ssh -N -L19100:<IP_printer>:9100 <username>@<ssh_gateway> (note that now the machine, the gateway and the printer are in the same local network) then I tried again the telnet test with telnet localhost 19100, I got access and everything, but I didn't get the print but the usual error channel 2: open failed: connect failed: Connection timed out Maybe I am missing some other connection to be forwarded or maybe this is not allowed by the administrators. Of course, if I connect via ssh tunneling to the local machine from my laptop through the gateway, I can successfully print using the lpr command (from the local machine). But this is what I would like to avoid (yes, I'm lazy...:-), I would like to have a more 'elegant' and transparent way to do that.

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• TCP RST right after FIN/ACK

  - by Nitzan Shaked

  I am having the weirdest issue: I have a web server which sometimes, only on very specific requests, will send a RST to the client after having sent the FIN datagram. First, a description of the setup: The server runs on an Ubuntu 12.04.1 LTS, which itself is a VM guest inside a Win7 x64 host, in bridged mode. ufw is disabled on the host The client runs on a iOS simulator, which runs on OS X Mountain Lion, which is a VM guest (hackintosh) inside a Win7 x64 host, in bridged mode. Both client and server are on the same LAN, one is connected to the home router via an Ethernet cable, and then other thru WiFi. I happened to glimpse over the server's http logs and found that the client sometimes issuing multiple subsequent identical requests. Further investigation led me to discover that this happens when the server sends a RST, and that the client is simply re-trying. I am attaching several tcpdump's: Good1 is the server-side tcpdump of a good session ("good" meaning no RST was generated). Good3 is another sever-side tcpdump of a good session. (The difference between Good1 and Good3 is the order in which ACK's were sent from the server to the client, ACK'ing the client's request. The client's request arives in 2 segements (specifically: one for the http headers, and another for a body containing an empty json object, "{}"). In Good1, the server ACK's both request segments, using 2 ACK segments, after the second request has arrived. In Good3, the server ACK's each request segment with an ACK segment as soon as the request segment arrives. Not that it should make a difference.) Bad1 is a dump, both client- and server-side, of a bad session. Bad2 is another bad session, this time server-side only. Note that in all "bad" sessions, the server ACK's each request segments immediately after having received it. I've looked at a few other bad sessions, and the situation is the same in all of them. But this is also the behavior in "Good3", so I don't see how that observation helps me, of for that matter why it should matter. I can't find any difference between good and bad sessions, or at least one that I think should matter. My question is: why are those RST's being generated? Or at least: how do I go about debugging this, or providing more info here that'll help? Edit 2 new facts that I have learned: Section 4.2.2.13 of the RFC (1122) (and Wikipedia, in the article "TCP", under "Connection Termination") says that a TCP application on one host may close the connection before it has read all of the data in its socket buffer, and in such a case the TCP on the host will sent a RST to the other side, to let it know that not all the data it has sent has been read. I'm not sure I completely understand this, since closing my side of the connection still allows me to read, no? It also means that I can't write any more. I am not sure this is relevant, though, since I see a RST after FIN. There are multiple complaints of this happening with wsgiref (Python's dev-mode HTTP server), which is exactly what I'm using. I'll keep updating as I find out more. Thanks! ~~~~~~~~~~~~~~~~~~~~ Good1 -- Server Side ~~~~~~~~~~~~~~~~~~~~ 13:28:02.308319 IP 192.168.1.51.51479 > 192.168.1.132.5000: Flags [S], seq 94268074, win 65535, options [mss 1460,nop,wscale 4,nop,nop,TS val 943308864 ecr 0,sackOK,eol], length 0 13:28:02.308336 IP 192.168.1.132.5000 > 192.168.1.51.51479: Flags [S.], seq 1726304574, ack 94268075, win 14480, options [mss 1460,sackOK,TS val 326480982 ecr 943308864,nop,wscale 3], length 0 13:28:02.309750 IP 192.168.1.51.51479 > 192.168.1.132.5000: Flags [.], ack 1, win 8235, options [nop,nop,TS val 943308865 ecr 326480982], length 0 13:28:02.310744 IP 192.168.1.51.51479 > 192.168.1.132.5000: Flags [P.], seq 1:351, ack 1, win 8235, options [nop,nop,TS val 943308865 ecr 326480982], length 350 13:28:02.310766 IP 192.168.1.51.51479 > 192.168.1.132.5000: Flags [P.], seq 351:353, ack 1, win 8235, options [nop,nop,TS val 943308865 ecr 326480982], length 2 13:28:02.310841 IP 192.168.1.132.5000 > 192.168.1.51.51479: Flags [.], ack 351, win 1944, options [nop,nop,TS val 326480983 ecr 943308865], length 0 13:28:02.310918 IP 192.168.1.132.5000 > 192.168.1.51.51479: Flags [.], ack 353, win 1944, options [nop,nop,TS val 326480983 ecr 943308865], length 0 13:28:02.315931 IP 192.168.1.132.5000 > 192.168.1.51.51479: Flags [P.], seq 1:18, ack 353, win 1944, options [nop,nop,TS val 326480984 ecr 943308865], length 17 13:28:02.316107 IP 192.168.1.132.5000 > 192.168.1.51.51479: Flags [FP.], seq 18:684, ack 353, win 1944, options [nop,nop,TS val 326480984 ecr 943308865], length 666 13:28:02.317651 IP 192.168.1.51.51479 > 192.168.1.132.5000: Flags [.], ack 18, win 8234, options [nop,nop,TS val 943308872 ecr 326480984], length 0 13:28:02.318288 IP 192.168.1.51.51479 > 192.168.1.132.5000: Flags [.], ack 685, win 8192, options [nop,nop,TS val 943308872 ecr 326480984], length 0 13:28:02.318640 IP 192.168.1.51.51479 > 192.168.1.132.5000: Flags [F.], seq 353, ack 685, win 8192, options [nop,nop,TS val 943308872 ecr 326480984], length 0 13:28:02.318651 IP 192.168.1.132.5000 > 192.168.1.51.51479: Flags [.], ack 354, win 1944, options [nop,nop,TS val 326480985 ecr 943308872], length 0 ~~~~~~~~~~~~~~~~~~~~ Good3 -- Server Side ~~~~~~~~~~~~~~~~~~~~ 13:28:03.311143 IP 192.168.1.51.51486 > 192.168.1.132.5000: Flags [S], seq 1982901126, win 65535, options [mss 1460,nop,wscale 4,nop,nop,TS val 943309853 ecr 0,sackOK,eol], length 0 13:28:03.311155 IP 192.168.1.132.5000 > 192.168.1.51.51486: Flags [S.], seq 2245063571, ack 1982901127, win 14480, options [mss 1460,sackOK,TS val 326481233 ecr 943309853,nop,wscale 3], length 0 13:28:03.312671 IP 192.168.1.51.51486 > 192.168.1.132.5000: Flags [.], ack 1, win 8235, options [nop,nop,TS val 943309854 ecr 326481233], length 0 13:28:03.313330 IP 192.168.1.51.51486 > 192.168.1.132.5000: Flags [P.], seq 1:351, ack 1, win 8235, options [nop,nop,TS val 943309855 ecr 326481233], length 350 13:28:03.313337 IP 192.168.1.132.5000 > 192.168.1.51.51486: Flags [.], ack 351, win 1944, options [nop,nop,TS val 326481234 ecr 943309855], length 0 13:28:03.313342 IP 192.168.1.51.51486 > 192.168.1.132.5000: Flags [P.], seq 351:353, ack 1, win 8235, options [nop,nop,TS val 943309855 ecr 326481233], length 2 13:28:03.313346 IP 192.168.1.132.5000 > 192.168.1.51.51486: Flags [.], ack 353, win 1944, options [nop,nop,TS val 326481234 ecr 943309855], length 0 13:28:03.327942 IP 192.168.1.132.5000 > 192.168.1.51.51486: Flags [P.], seq 1:18, ack 353, win 1944, options [nop,nop,TS val 326481237 ecr 943309855], length 17 13:28:03.328253 IP 192.168.1.132.5000 > 192.168.1.51.51486: Flags [FP.], seq 18:684, ack 353, win 1944, options [nop,nop,TS val 326481237 ecr 943309855], length 666 13:28:03.329076 IP 192.168.1.51.51486 > 192.168.1.132.5000: Flags [.], ack 18, win 8234, options [nop,nop,TS val 943309868 ecr 326481237], length 0 13:28:03.329688 IP 192.168.1.51.51486 > 192.168.1.132.5000: Flags [.], ack 685, win 8192, options [nop,nop,TS val 943309868 ecr 326481237], length 0 13:28:03.330361 IP 192.168.1.51.51486 > 192.168.1.132.5000: Flags [F.], seq 353, ack 685, win 8192, options [nop,nop,TS val 943309869 ecr 326481237], length 0 13:28:03.330370 IP 192.168.1.132.5000 > 192.168.1.51.51486: Flags [.], ack 354, win 1944, options [nop,nop,TS val 326481238 ecr 943309869], length 0 ~~~~~~~~~~~~~~~~~~~~ Bad1 -- Server Side ~~~~~~~~~~~~~~~~~~~~ 13:28:01.311876 IP 192.168.1.51.51472 > 192.168.1.132.5000: Flags [S], seq 920400580, win 65535, options [mss 1460,nop,wscale 4,nop,nop,TS val 943307883 ecr 0,sackOK,eol], length 0 13:28:01.311896 IP 192.168.1.132.5000 > 192.168.1.51.51472: Flags [S.], seq 3103085782, ack 920400581, win 14480, options [mss 1460,sackOK,TS val 326480733 ecr 943307883,nop,wscale 3], length 0 13:28:01.313509 IP 192.168.1.51.51472 > 192.168.1.132.5000: Flags [.], ack 1, win 8235, options [nop,nop,TS val 943307884 ecr 326480733], length 0 13:28:01.315614 IP 192.168.1.51.51472 > 192.168.1.132.5000: Flags [P.], seq 1:351, ack 1, win 8235, options [nop,nop,TS val 943307886 ecr 326480733], length 350 13:28:01.315727 IP 192.168.1.132.5000 > 192.168.1.51.51472: Flags [.], ack 351, win 1944, options [nop,nop,TS val 326480734 ecr 943307886], length 0 13:28:01.316229 IP 192.168.1.51.51472 > 192.168.1.132.5000: Flags [P.], seq 351:353, ack 1, win 8235, options [nop,nop,TS val 943307886 ecr 326480733], length 2 13:28:01.316242 IP 192.168.1.132.5000 > 192.168.1.51.51472: Flags [.], ack 353, win 1944, options [nop,nop,TS val 326480734 ecr 943307886], length 0 13:28:01.321019 IP 192.168.1.132.5000 > 192.168.1.51.51472: Flags [P.], seq 1:18, ack 353, win 1944, options [nop,nop,TS val 326480735 ecr 943307886], length 17 13:28:01.321294 IP 192.168.1.132.5000 > 192.168.1.51.51472: Flags [FP.], seq 18:684, ack 353, win 1944, options [nop,nop,TS val 326480736 ecr 943307886], length 666 13:28:01.321386 IP 192.168.1.132.5000 > 192.168.1.51.51472: Flags [R.], seq 685, ack 353, win 1944, options [nop,nop,TS val 326480736 ecr 943307886], length 0 13:28:01.322727 IP 192.168.1.51.51472 > 192.168.1.132.5000: Flags [.], ack 18, win 8234, options [nop,nop,TS val 943307891 ecr 326480735], length 0 13:28:01.322733 IP 192.168.1.132.5000 > 192.168.1.51.51472: Flags [R], seq 3103085800, win 0, length 0 13:28:01.323221 IP 192.168.1.51.51472 > 192.168.1.132.5000: Flags [.], ack 685, win 8192, options [nop,nop,TS val 943307892 ecr 326480736], length 0 13:28:01.323231 IP 192.168.1.132.5000 > 192.168.1.51.51472: Flags [R], seq 3103086467, win 0, length 0 ~~~~~~~~~~~~~~~~~~~~ Bad1 -- Client Side ~~~~~~~~~~~~~~~~~~~~ 13:28:11.374654 IP 192.168.1.51.51472 > 192.168.1.132.5000: Flags [S], seq 920400580, win 65535, options [mss 1460,nop,wscale 4,nop,nop,TS val 943307883 ecr 0,sackOK,eol], length 0 13:28:11.375764 IP 192.168.1.132.5000 > 192.168.1.51.51472: Flags [S.], seq 3103085782, ack 920400581, win 14480, options [mss 1460,sackOK,TS val 326480733 ecr 943307883,nop,wscale 3], length 0 13:28:11.376352 IP 192.168.1.51.51472 > 192.168.1.132.5000: Flags [.], ack 1, win 8235, options [nop,nop,TS val 943307884 ecr 326480733], length 0 13:28:11.378252 IP 192.168.1.51.51472 > 192.168.1.132.5000: Flags [P.], seq 1:351, ack 1, win 8235, options [nop,nop,TS val 943307886 ecr 326480733], length 350 13:28:11.379027 IP 192.168.1.51.51472 > 192.168.1.132.5000: Flags [P.], seq 351:353, ack 1, win 8235, options [nop,nop,TS val 943307886 ecr 326480733], length 2 13:28:11.379732 IP 192.168.1.132.5000 > 192.168.1.51.51472: Flags [.], ack 351, win 1944, options [nop,nop,TS val 326480734 ecr 943307886], length 0 13:28:11.380592 IP 192.168.1.132.5000 > 192.168.1.51.51472: Flags [.], ack 353, win 1944, options [nop,nop,TS val 326480734 ecr 943307886], length 0 13:28:11.384968 IP 192.168.1.132.5000 > 192.168.1.51.51472: Flags [P.], seq 1:18, ack 353, win 1944, options [nop,nop,TS val 326480735 ecr 943307886], length 17 13:28:11.385044 IP 192.168.1.51.51472 > 192.168.1.132.5000: Flags [.], ack 18, win 8234, options [nop,nop,TS val 943307891 ecr 326480735], length 0 13:28:11.385586 IP 192.168.1.132.5000 > 192.168.1.51.51472: Flags [FP.], seq 18:684, ack 353, win 1944, options [nop,nop,TS val 326480736 ecr 943307886], length 666 13:28:11.385743 IP 192.168.1.51.51472 > 192.168.1.132.5000: Flags [.], ack 685, win 8192, options [nop,nop,TS val 943307892 ecr 326480736], length 0 13:28:11.385966 IP 192.168.1.132.5000 > 192.168.1.51.51472: Flags [R.], seq 685, ack 353, win 1944, options [nop,nop,TS val 326480736 ecr 943307886], length 0 13:28:11.387343 IP 192.168.1.132.5000 > 192.168.1.51.51472: Flags [R], seq 3103085800, win 0, length 0 13:28:11.387344 IP 192.168.1.132.5000 > 192.168.1.51.51472: Flags [R], seq 3103086467, win 0, length 0 ~~~~~~~~~~~~~~~~~~~~ Bad2 -- Server Side ~~~~~~~~~~~~~~~~~~~~ 13:28:01.319185 IP 192.168.1.51.51473 > 192.168.1.132.5000: Flags [S], seq 1631526992, win 65535, options [mss 1460,nop,wscale 4,nop,nop,TS val 943307889 ecr 0,sackOK,eol], length 0 13:28:01.319197 IP 192.168.1.132.5000 > 192.168.1.51.51473: Flags [S.], seq 2524685719, ack 1631526993, win 14480, options [mss 1460,sackOK,TS val 326480735 ecr 943307889,nop,wscale 3], length 0 13:28:01.320692 IP 192.168.1.51.51473 > 192.168.1.132.5000: Flags [.], ack 1, win 8235, options [nop,nop,TS val 943307890 ecr 326480735], length 0 13:28:01.322219 IP 192.168.1.51.51473 > 192.168.1.132.5000: Flags [P.], seq 1:351, ack 1, win 8235, options [nop,nop,TS val 943307890 ecr 326480735], length 350 13:28:01.322336 IP 192.168.1.132.5000 > 192.168.1.51.51473: Flags [.], ack 351, win 1944, options [nop,nop,TS val 326480736 ecr 943307890], length 0 13:28:01.322689 IP 192.168.1.51.51473 > 192.168.1.132.5000: Flags [P.], seq 351:353, ack 1, win 8235, options [nop,nop,TS val 943307890 ecr 326480735], length 2 13:28:01.322700 IP 192.168.1.132.5000 > 192.168.1.51.51473: Flags [.], ack 353, win 1944, options [nop,nop,TS val 326480736 ecr 943307890], length 0 13:28:01.326307 IP 192.168.1.132.5000 > 192.168.1.51.51473: Flags [P.], seq 1:18, ack 353, win 1944, options [nop,nop,TS val 326480737 ecr 943307890], length 17 13:28:01.326614 IP 192.168.1.132.5000 > 192.168.1.51.51473: Flags [FP.], seq 18:684, ack 353, win 1944, options [nop,nop,TS val 326480737 ecr 943307890], length 666 13:28:01.326710 IP 192.168.1.132.5000 > 192.168.1.51.51473: Flags [R.], seq 685, ack 353, win 1944, options [nop,nop,TS val 326480737 ecr 943307890], length 0 13:28:01.328499 IP 192.168.1.51.51473 > 192.168.1.132.5000: Flags [.], ack 18, win 8234, options [nop,nop,TS val 943307896 ecr 326480737], length 0 13:28:01.328509 IP 192.168.1.132.5000 > 192.168.1.51.51473: Flags [R], seq 2524685737, win 0, length 0 13:28:01.328514 IP 192.168.1.51.51473 > 192.168.1.132.5000: Flags [.], ack 685, win 8192, options [nop,nop,TS val 943307896 ecr 326480737], length 0 13:28:01.328517 IP 192.168.1.132.5000 > 192.168.1.51.51473: Flags [R], seq 2524686404, win 0, length 0

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• Multiple IP addresses on one NIC register twice in DNS server

  - by Brad B.

  Hi, We've got a build server (Windows Server 2008 SP2, 64-bit) which has one NIC and two IP addresses registered to that NIC (192.168.1.30 and 192.168.1.31). The build server is registering two identical Host (A) records for itself in our DNS server: buildserver.example.com = 192.168.1.30 buildserver.example.com = 192.168.1.31 I know in the "Advanced TCP/IP Settings" window for the build server's NIC, under the "DNS" tab, there is a check box labeled "Register this connection's addresses in DNS". I only want ONE of the IP addresses (ending in .30) to be registered in DNS not both of them. Can that be done? My best guess is to disable the "Register this connection's addresses in DNS" and manually add the Host (A) record to our DNS server. Thanks for any help!

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• Permanently change IP address on SuSE 10

  - by Long Ngo

  I am trying to change IP address of a SuSE 10 machine that is running Tomcat. I need to create a shell script to do this so could not use YaST. As some sites suggested on my Google search, I edited the files in /etc/sysconfig/network/ifcfg-eth-* to change the IP address. After that, I restarted the network service by calling /etc/init.d/network restart. The network card restarting just fine. I, then, restarted tomcat web service. However, when I browsed the new IP address using browser, I got an "Request denied" message. Can anyone please tell me how I could do this? Thanks

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• ip namespace non-root shell

  - by user2730940

  I am trying to run ssh command to another ip namespace. I can do it right now, but it runs as root. I want to run it as a normal user. I want to know if there is a way to enter a non-root shell in another network namespace. I know you can use this to enter a root shell in another namespace: sudo ip netns exec <namespace> bash Alternatively, is there a way to run single commands as a non-root user? I know you can run commands as root with this: sudo ip netns exec <namespace> <command>

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• 3G/Edge/GPRS IP addresses and geocoding

  - by LookitsPuck

  Hey all! So, we're looking to develop a mobile website. On this mobile website, we'd like to automatically populate a user's location (with proper fallback) based on their IP address. I'm aware of geocoding a location based on IP address (mapping to latitude, longitude and then getting the location with that information). However, I'm curious how accurate this information is? Are mobile devices assigned IP's when they utilize 3G, EDGE, and GPRS connections? I think so. If that is so, does it map to a relatively accurate location? It doesn't have to be spot on, but relatively accurate would be nice. Thanks! -Steve

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• Assigning static IP and domain name mapping to local server in LAN

  - by yashbinani

  I have developed a web application which will be deployed in a LAN environemnt. Clients will be Computers/Android Tablets/IPAD In order for communication between client and local server 1) need to assign a static IP to local server. 2) need a domian name mapping for that IP address in Local environment. 3) router should assign the same static IP if it gets restarted etc. I am using a windows XP machine as Local server OS. Do i need to take care of router configurations before buying one, or all routers will have same capability to perform this task. I am not a network specialist, so Sorry if this question sounds stupid. Thanks

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• Adding IP address to OpenVZ VPS (OpenVZ Web Panel)

  - by andy

  I apologise if I sound at all dumb. This is my first dedicated server having used a VPS for over a year and I'm trying to setup a VPS on this new server. I purchased a subnet from my hosting provider that I believe allows me 6 usable IP addresses: 177.xx.xxx.201 - 177.xx.xxx.206 The subnet address looks like this: 177.xx.xxx.200/29. I've gone on my server and added them like it said on a wiki like so: ip addr add 177.**.***.201/29 dev eth0 I done that for all six and now when I go to them in the browser they point to my server. The problem is, I'm using OpenVZ web panel to create VMs (http://code.google.com/p/ovz-web-panel/) so I created a VM and assigned one of those IPs to it. However when SSHing to that IP it SSH's to the dedicated server and not the VM. Am I missing something?

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• is it possible to get IP address of a wifi that you are not connected to

  - by coltonon

  Just like the question states. Is it somehow possible to get the IP address of a network that you don't have access to? For example, if you click the little wifi button on your task bar, and highlight your cursor over one of the options, you get some info. But your external IP address is actually the address of the router, isn't it? Which would mean you would have to connect to the wifi, and then the router to get an IP address, correct? I realy just want a simple answer: No or Yes and here's how

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• On setting up Apache and IIS to share the same IP

  - by miCRoSCoPiCeaRthLinG

  Hello, There are two different web-apps running on two (physically) different servers on our network... one of IIS and another one on Apache - both on port 80 since two machines are accessible by different IPs on our internal network. Now I want to expose both these services to the world. My idea is to somehow make the incoming connection redirect to the appropriate server based on user's choice of subdomain. Example xxx.domain.com maps to the IIS (Internal IP: 1.2.3.4) yyy.domain.com maps to Apache (Internal IP: 5.6.7.8) To the world, both these servers will share the same public IP. What kind of a configuration am I looking at and how do I go about trapping the subdomain requests and redirecting to the appropriate server? Thanks, m^e

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• Can't ping some IP addresses in the same subnet (LAN) Windows 2011 Server

  - by Ricardo

  Hi I’m running in Windows Small Server 2011 server standard (192.168.1.108), it’s my dhcp and dns server too, but suddenly all other users can’t get internet. My gateway is 192.168.1.1. After a lots of tested I can saw that my server can’t get into the router (192.168.1.1), and also into some others computers, but some other computers answer the ping command. In fact the same computer with the IP 192.168.1.9 didn't answer, but with the IP 192.168.1.63, it response! I have no routers, firewall, vlans or anything that disallow the traffic between computers, in fact when I changed the server IP address (192.168.1.109), I be able to ping the other computers and gateway, but if a back to the 192.168.1.108 the trouble comeback. I hope you can help me with this issue Ricardo

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• LameUser trying - apache2 webserver authentication - IP range to access without pass prompt others with it

  - by Mikee

  I have (maybe silly) question regarding the apache2 webserver and security - I am trying to archieve this: Users connecting from 192.168.1.24 not to be prompted for password and allowed Others asked for username and password if correct then connect. I am trying to do this for the whole directory /var/www No matter whether I put the code into .htaccess file or in httpd.conf it doesn't work for me. Order deny,allow Deny from all AuthName "PassRequest" AuthType Basic AuthUserFile /var/.htpasswd Require valid-user Allow from 192.168.1.24 Satisfy Any If I try to connect to the page I am allowed from both the allowed IP or any other, If I remove the satisfy any line then I am prompted for password, if I remove the password too and try to connect from different IP I am NOT REFUSED ... is there some module that needs to be activated or why is the IP directive skipped ? It needs to be put in every folder or /var/www/.htaccess is enough ? can I just put it in httpd.conf instead or not ?? I spend last 4 hours trying to google up why it is acting like that, Any help will be highly appreciated :-))

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• Wrong source IP when accessing internet directly from TMG server

  - by jarod1701

  Hi everyone, after implementing a ForeFront TMG server I'm facing only one problem: After I added a second IP to the external adapter I had to manually set "NAT Address Selection" inside the network rule "Internet Access" to the first IP since all others would get blocked by the CISCO firewall. This configuration works as long as traffic comes from the internal network (e.g. browser on clients). Traffic from the TMG directed to the internet always carries the second IP as it's source address and gets blocked. All our other TMGs/ISAs are running fine and I never came across this problem- Does anybody have a clue, coz I don't?! Kevin

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• Changing IP every sec with Firefox

  - by Carol

  I looking for ip changer what is faster than PROXY (i tried Elite Proxy Switcher + Firefox add-on, but it's too slow. I set automatic switching to 4 sec and yes he change the ip every 4 sec however it's not enough because it loads pages very slowly.) Secondly I tried the TOR Project but this is not good..because the TOR would be nice and working good however he needs more than 10 seconds, a new identity and it's not to good for me because i want to change my ip lass than 10 sec. So I find the solution. This is IPfucker alias ipFlood (https://addons.mozilla.org/en-us/firefox.../ipflood/) But it does not work on all sites unfortunately...because this is just simulation "Simulate the use of a series of proxy changing at each new connection.". Anyone knows a solution to the problem? Is there an alternative (VPS, Proxy, TOR)? Thanks in advice.

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• MAC to IP binding in ASA 5510 / SG 300-52

  - by Sampsa

  I am trying to configure a Cisco ASA 5510 to assign specific IP-addresses to specific MACs. Firmware on my ASA is 8.2(5). I have used this feature in our previous device (Cisco SA-520W). I have also read that this feature is (not yet) implemented. How do I work around this problem, if not by direct assignment? Do I need to specify fixed IP's on concerned devices themselves? I also have a SG 300-52 switch for our LAN. We cannot specify IP-addresses to ports, because we have further switches down the line. Thank you for your help!

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• IP assignment in a /28 block

  - by mks

  Need help on setting up firewall router. My config is as below: Public static network ID: x.x.x.48/28 gateway: x.x.x.49 available IP for the hosts: x.x.x.52 to 62 gw_eth0 <-- fw_eth0 - fw_eth1 <-- dmz_switch Four servers are connected on dmz_switch (say s1, s2, s3, s4) all have to use public static IP address from the above block. Any recommendation on IP assignment and route setup? Do I need to subnet the above block further or simply use /32 netmask and point-to-point static routes in the above setup?

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• Detect an IP address of a Wireless Access Point device

  - by dempap

  I have a Wireless Access Point device (http://www.szedup.com/show.aspx?id=1706), which I am planning to put into BeagleBoard-xM, in order to achieve wireless communication (LAN). However, I can't find it's IP address. I mean, I have to know it's IP address in order to connect with BeagleBoard-xM via a terminal emulator. For the moment, I have this device connected via Ethernet on my router. My router's setting page shows I have this device connected, but no further information. Is there any way to find the IP address of the Wireless Access Point? I hope of being understood. Any help would be really appreciated.

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• Get/Assign IP addresses assigned by the DHCP sever with DLink switches in between

  - by Ranjith Kumar

  In our office the setup is like we have a UBUNTU server with DHCP Server connected to all the PCS via 24 port and 8 port DLink switches. How can I find all the PCS(with client name, ip and mac address)in the network?? When I do "vi /var/lib/dhcp3/dhcpd.leases", I get all the ip addresses for the switches. I have used "arp-scan --interface=eth0 --localnet" to get all the IPs and MAC Addresses in my local network. I couldn't find any option to diplay client name. Also I would like to assign particular IP for a particular PC. I have done the changes in the dhcp.conf file but it is not working as they are not directly connected to DHCP-server(DLink switches in between). How can I assign IPs for PCs in this kind of setup. Thanks in advance

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• Dynamic to static internal IP address (Snow Leopard server)

  - by bac

  I purchased a new Mac mini server, since my old iMac, which was a server pretty much died. My problem is this. How do I change my internal IP address for my mac mini server to a static address, like 192.168.0.2? Before you guys harp on me, my old server was running Ubuntu Hardy and I only had to map the IP address in the router, which would automatically assign the reserved address through DHCP. Now, I know things are different between the two, but my problem is that the mac is not accepting the assigned IP address or the router just is not assigning. However, every time I have manually changed it on the Mac to an address of my choice, it takes the computer off the Internet. My router is a NetGear WTG624 v2, I believe. I need this to work, so I can utilize Dynamic DNS.

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• Web application access different between Domain Name and IP

  - by h82

  in our office, we have a web application running. When we access the application by the domain name, http://server.domain.com/application/name it will display the current version of application. However, when we go by the IP address, http://192.168.1.111/application/name it will display the old version of that application. One thing is that we can access that application either by http://server.domain.com/ (it will be redirected to the long URL automatically) or http://server.domain.com/application/name when we are using domain name. But only accessible via the exact URL when we use IP address. Why is it showing the old version and how can it be corrected? It is running JRun4, Apache on Red hat. I've checked in httpd.conf a bit but could not find any. Please advice what should be done to display the same (updated version) when we access using domain name or IP address. Thank you.

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• Forward all tracif from one IP to another Ip on OS X

  - by Josh

  This is related to this question I just asked... I have two IP address on my iMac I want to "bridge". I'm not sure what the proper terminology is... here's the situation. My iMac has a firewire connection to my laptop and an ethernet connection to the rest of my office. My laptop has an ip of 192.168.100.2 (on the firewire interface). My iMac has an IP of 192.168.100.1 on the firewire interface, and two IPs, 10.1.0.6 and 10.1.0.7, on it's ethernet interface. If I wanted to forward all traffic coming in from 192.168.100.2 on my OS X machine to go out on IP 10.1.0.7, and vice-versa, can this be done? I assume I would use the ipfw command. Essentially I want to "bridge" the firewire network to the ethernet network so my laptop can see all the machines on the 10.1 network, and all those machines can see my laptop at 10.1.0.7. Is this possible?

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• Forward all traffic from one IP to another Ip on OS X

  - by Josh

  This is related to this question I just asked... I have two IP address on my iMac I want to "bridge". I'm not sure what the proper terminology is... here's the situation. My iMac has a firewire connection to my laptop and an ethernet connection to the rest of my office. My laptop has an ip of 192.168.100.2 (on the firewire interface). My iMac has an IP of 192.168.100.1 on the firewire interface, and two IPs, 10.1.0.6 and 10.1.0.7, on it's ethernet interface. If I wanted to forward all traffic coming in from 192.168.100.2 on my OS X machine to go out on IP 10.1.0.7, and vice-versa, can this be done? I assume I would use the ipfw command. Essentially I want to "bridge" the firewire network to the ethernet network so my laptop can see all the machines on the 10.1 network, and all those machines can see my laptop at 10.1.0.7. Is this possible?

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• Static IP on FEDORA12 from Virtualbox

  - by Krazy_Kaos

  I'm trying to get my FEDORA12 to have an STATIC IP - inside virtualbox - inside Ubuntu Let me rephrase that. I have an Ubuntu 9.04 system with vitualbox and a FEDORA12 vm there and I would like to put the fedora with an STATIC IP (amahi needs it), but I'm getting stuck... I'm using NAT (if that's any help) I tryid a few tutorials, but no go. I'm kind of new to the *nix world but I'm old school on M$ Edit: Screenshots UBUNTU 9.04 (host that has the vm) FEDORA (sory cant post pics... not enough rep) INFO: GUEST WITH STATIC: IFCONFIG: eth0 Link encap:Ethernet HWaddr 08:00:27:35:CC:DE inet addr:192.168.1.55 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: fe80::a00:27ff:fe35:ccde/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:7 errors:0 dropped:0 overruns:0 frame:0 TX packets:2764 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:574 (574.0 b) TX bytes:127121 (124.1 KiB) Interrupt:11 Base address:0xc020 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:1856 errors:0 dropped:0 overruns:0 frame:0 TX packets:1856 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:181587 (177.3 KiB) TX bytes:181587 (177.3 KiB) NETSTAT -NR: Kernel IP routing table Destination Gateway Genmask Flags MSS Window irtt Iface 192.168.2.1 0.0.0.0 255.255.255.255 UH 0 0 0 eth0 192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 0.0.0.0 192.168.2.1 0.0.0.0 UG 0 0 GUEST WITH DHCP: IFCONFIG: eth0 Link encap:Ethernet HWaddr 08:00:27:35:CC:DE inet addr:10.0.2.15 Bcast:10.0.2.255 Mask:255.255.255.0 inet6 addr: fe80::a00:27ff:fe35:ccde/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:105 errors:0 dropped:0 overruns:0 frame:0 TX packets:2966 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:49787 (48.6 KiB) TX bytes:149969 (146.4 KiB) Interrupt:11 Base address:0xc020 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:1903 errors:0 dropped:0 overruns:0 frame:0 TX packets:1903 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:185931 (181.5 KiB) TX bytes:185931 (181.5 KiB) NETSTAT -NR: Kernel IP routing table Destination Gateway Genmask Flags MSS Window irtt Iface 10.0.2.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 0.0.0.0 10.0.2.2 0.0.0.0 UG 0 0 0 PS.: I'm still trying to workout the sudoer file to be able to exec the iptables command

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• Static IP on FEDORA12

  - by Diego Castro

  I'm trying to get my FEDORA12 to have an STATIC IP - inside virtualbox - inside Ubuntu Let me rephrase that. I have an Ubuntu 9.04 system with vitualbox and a FEDORA12 vm there and I would like to put the fedora with an STATIC IP (amahi needs it), but I'm getting stuck... I'm using NAT (if that's any help) I tryid a few tutorials, but no go. I'm kind of new to the *nix world but I'm old school on M$

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• Get a user's current IP address from Skype

  - by Jonathan.

  This is assuming that you (/police/ISP) can get the [rough] location of a laptop based on IP address. If your laptop is stolen, and the thief unwittingly connects it to the Internet, and you have Skype on the laptop could you get the public IP address of the laptop and then go to the police and get it tracked? Or activate the webcam to see the surroundings, but without having Skype ring/notify the user?

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