Re: Identifying open ports

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Kenneth Porter wrote:
--On Monday, June 14, 2004 12:06 PM -0600 "Rodolfo J. Paiz" <rpaiz@xxxxxxxxxxxxxx> wrote:

If you do something like "netstat -leanp | grep 80" you should see
whether Apache is listening on that port or not. However, the firewall
may still be blocking that port; check your iptables configuration to
make sure.


I usually use "lsof -i -n" (list open files, IP ports only, numeric (no DNS lookups)), but one must be root to use this. As with netstat, pipe the result through grep to identify specific ports.

I prefer nmap or nmapfe against the public IP of a machine. If you've been trojaned or rootkitted, lsof and netstat are suspect. ---------------------------------------------------------------------- - Rick Stevens, Senior Systems Engineer rstevens@xxxxxxxxxxxxxxx - - VitalStream, Inc. http://www.vitalstream.com - - - - To err is human, to moo bovine. - ----------------------------------------------------------------------



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