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I have access to a server via its local IP (I use putty) and I know the server has a static IP, how can I found its static(fix) IP? Its OS is CentOS.

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closed as too localized by mdpc, voretaq7 Nov 27 '12 at 21:25

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curl http://canhazip.com/ –  ceejayoz Nov 27 '12 at 18:30
    
also: curl http://wgetip.com/ curl http://curlmyip.com/ –  xofer Nov 27 '12 at 18:33
    
@xofer jsonip.com can be handy too. –  ceejayoz Nov 27 '12 at 18:40
    
Look at the edge router/firewall configuration? Hit whatismyip.com from the server in question? –  voretaq7 Nov 27 '12 at 21:25

2 Answers 2

Enter ifconfig at the command line.

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Note that ifconfig will show the actual IP address assigned to the network interface, where the external sources listed in comments/answers will show the IP as it appears to, er, those external sources. This may be different in some situations, so check both. –  xofer Nov 27 '12 at 18:35

For example:

links -dump http://whatismyip.com | egrep "([0-9]+.){3}"

Of course you can use another site, but this is one of most popular.

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I assumed that there is some kind of NAT, and public IP is not known on host itself –  Tomasz Olszewski Nov 27 '12 at 18:32

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