Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I ran the command sudo ipconfig eth1 up To change my server's ip to However upon connecting to it from the external IP (I updated the port forwarding), it does not work. However the internal ip does. I could connect to it through the external ip before the command was run.

enter image description hereenter image description hereenter image description here

share|improve this question
More information about the router being used is required to help. – Ramhound May 16 '13 at 12:13
It is the netgear WNR1000v3 – agz May 17 '13 at 0:14
Why did you change the ip through the operating system instead of changing what address woucl be assigned through the router's control panel? I should point out a computer within a local network is not able to know whats its external ip address is in most cases. If somebody outside of your network can't connect then there is indeed a configuration problem. – Ramhound May 17 '13 at 10:56

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Browse other questions tagged or ask your own question.