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I am running xubnutu 12.04 and I am trying to port forward my computer. The problem is that nothing seems to find the computer. The address, which ifconfig and my router says, is The problems is that when I run network scan applications they don't find the computer, and e.g. port forwarding of doesn't work at all. On this computer I am running both windows 7 and xubuntu, and when I run windows the computer is "visible" in the network, but when I use Linux it is not. Also, I can go to on this local computer, but when I try to access it from another computer in the network it do not work. Might there be some driver problems or a setting?

Here is output from ifconfig:

      eth0      Link encap:Ethernet  HWaddr dc:85:de:03:4c:f9  
      inet addr:  Bcast:  Mask:
      inet6 addr: fe80::de85:deff:fe03:4cf9/64 Scope:Link
      RX packets:6403 errors:10 dropped:0 overruns:0 frame:52167
      TX packets:5591 errors:8 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:1000 
      RX bytes:5190472 (5.1 MB)  TX bytes:1263664 (1.2 MB)

      lo        Link encap:Local Loopback  
      inet addr:  Mask:
      inet6 addr: ::1/128 Scope:Host
      UP LOOPBACK RUNNING  MTU:16436  Metric:1
      RX packets:629 errors:0 dropped:0 overruns:0 frame:0
      TX packets:629 errors:0 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:0 
      RX bytes:70984 (70.9 KB)  TX bytes:70984 (70.9 KB)

output from netstat -an | grep -i listen:

    tcp        0      0  *               LISTEN     
    tcp        0      0 *               LISTEN     
    tcp        0      0  *               LISTEN     
    tcp        0      0 *               LISTEN     
    tcp        0      0 *               LISTEN     
    unix  2      [ ACC ]     STREAM     LISTENING     10350    @/tmp/.ICE-unix/1688
    unix  2      [ ACC ]     SEQPACKET  LISTENING     7717     /run/udev/control
    unix  2      [ ACC ]     STREAM     LISTENING     9043     /tmp/ssh-NtifkVMY1635/agent.1635
    unix  2      [ ACC ]     STREAM     LISTENING     6489     @/com/ubuntu/upstart
    unix  2      [ ACC ]     STREAM     LISTENING     10351    /tmp/.ICE-unix/1688
    unix  2      [ ACC ]     STREAM     LISTENING     7834     @/org/bluez/audio
    unix  2      [ ACC ]     STREAM     LISTENING     9795     @/tmp/.X11-unix/X0
    unix  2      [ ACC ]     STREAM     LISTENING     8305     /var/run/acpid.socket
    unix  2      [ ACC ]     STREAM     LISTENING     6775     /var/run/dbus/system_bus_socket
    unix  2      [ ACC ]     STREAM     LISTENING     10312    @/tmp/dbus-lA8aAc2ipV
    unix  2      [ ACC ]     STREAM     LISTENING     7831     /var/run/sdp
    unix  2      [ ACC ]     STREAM     LISTENING     9796     /tmp/.X11-unix/X0
    unix  2      [ ACC ]     STREAM     LISTENING     6836     /var/run/avahi-daemon/socket
    unix  2      [ ACC ]     STREAM     LISTENING     11298    /home/euhiemf/.pulse/108bb33d36ea8478da5401810000000a-runtime/native
    unix  2      [ ACC ]     STREAM     LISTENING     11989    /tmp/.com.google.Chrome.iDv2kF/SingletonSocket
    unix  2      [ ACC ]     STREAM     LISTENING     8968     /tmp/keyring-EqigaB/control
    unix  2      [ ACC ]     STREAM     LISTENING     6857     /var/run/cups/cups.sock

from ufw status verbose:

Status: inactive

I don't have any other firewalls running as far as I am concerned, except maybe iptables or something?

from iptables --list-rules:


What I have running, which I am trying to access is python -m SimpleHTTPServer 8080. When I go to in my web-browser on this local computer it works, but when I try going to that same address on my other computer or my phone, which are all connected to the same network, it doesn't work. The server isn't found, and I do not get any output in the console from where I have the python server running. It's the same problem with any other port, and also with other applications. I can't connect to my teamspeak server from any other computer than this specific computer.

EDIT: Something interesting that I just discovered. I cant browse to my routers config page,, from this specific computer but I am connected to the Internet and to the network and to the router. However, I can go to from all my other devices which are all connected to the same router, and the same network!

EDIT2: The router config page ( now seems to work, but the other problems remains.

share|improve this question
Please edit your post to include the output of ifconfig. Port-forwarding is not necessary on internal (LAN) connections unless you are trying to internally forward an incoming port to an alternate port assignment –  douggro May 10 '13 at 19:13
Please edit your post by adding the output of sudo ufw status verbose. How are you trying to access your Ubuntu computer from other computers in the same network? –  Daniel Yuste Aroca May 10 '13 at 22:06
Thanks for adding the ifconfig output - it looks mostly normal. Try netstat -an | grep -i listen which will output all services listening for input. You're looking for the entries leading with tcp - add them to your post. –  douggro May 10 '13 at 23:29
Okay, it's listening on 8080. Does the server have a hostname? If so, try 'hostname.local:8080' and see if that works. –  douggro May 11 '13 at 20:48
@douggro That is cool! Didnt know you could do that, however it gave the same result as I could connect and it worked fine on this local computer, but not on any of the other devices that are connected to the same network. –  user1105047 May 11 '13 at 21:42
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