How to disable port/service in Ubuntu 8.04

[Karl Auer]

On Thu, 2008-08-28 at 16:51 +0530, Ashish Yadav wrote:
> How can I disable port/service in Ubuntu 8.04.

A port/service is only "enabled" if there is an actual service being
offered on the port. If no program is offering anything on a port,
anyone trying to connect on the port will get "connection refused".

If you want to disable a particular port, find out what's running on
that port and stop it. "netstat -a" sometimes helps.

Alternatively, set up a packet filter (iptables plus one of the many
front ends to it) and block everything except stuff you know you want.
Actually it's a good idea to do this anyway - it stops accidents (and
ignorant or malicious users).

Regards, K.

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Karl Auer (kauer at biplane.com.au)                   +61-2-64957160 (h)
http://www.biplane.com.au/~kauer/                  +61-428-957160 (mob)

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