Difference between revisions of "Determining IP Address"
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= Internet IP Address = | = Internet IP Address = | ||
− | There are many ways in which one can | + | There are many ways in which one can determine the Internet '''IP''' address associated with a particular system. |
− | == For Scripting == | + | == For Client Side Scripting == |
The following '''URL'''s will return your '''IP''' address (as you appear to the Internet) as a simple text string: | The following '''URL'''s will return your '''IP''' address (as you appear to the Internet) as a simple text string: | ||
− | |||
* http://nst.sourceforge.net/nst/cgi-bin/ip.cgi | * http://nst.sourceforge.net/nst/cgi-bin/ip.cgi | ||
* http://www.networksecuritytoolkit.org/nst/cgi-bin/ip.cgi | * http://www.networksecuritytoolkit.org/nst/cgi-bin/ip.cgi | ||
− | * http:// | + | * http://whatismyip.org/ |
The following '''bash''' script fragment demonstrates how one can retrieve the Internet '''IP''' address and store it in a variable: | The following '''bash''' script fragment demonstrates how one can retrieve the Internet '''IP''' address and store it in a variable: |
Revision as of 11:48, 10 April 2007
This page offers suggestions on how one might determine the IP address associated with a particular system.
Internet IP Address
There are many ways in which one can determine the Internet IP address associated with a particular system.
For Client Side Scripting
The following URLs will return your IP address (as you appear to the Internet) as a simple text string:
- http://nst.sourceforge.net/nst/cgi-bin/ip.cgi
- http://www.networksecuritytoolkit.org/nst/cgi-bin/ip.cgi
- http://whatismyip.org/
The following bash script fragment demonstrates how one can retrieve the Internet IP address and store it in a variable:
# Use wget to retrieve the IP address IP_ADDRESS="$(wget -O - http://nst.sourceforge.net/nst/cgi-bin/ip.cgi 2>/dev/null)";
The getipaddress script uses this basic technique and adds error checking, caching and the ability to use multiple sources (should a server be down). The following demonstrates how one would achieve similar results using the --public-address option provided by the getipaddr script:
# Use getipaddress to retrieve the IP address IP_ADDRESS="$(getipaddr --public-address)";