Depends. On what service you are talking about.
For sshd:

In the sshd configuration file uncomment the line
#Port 22

and change it to whatever port you want. Make sure the port isn't being
used by some other daemon/process or sshd will complain about not being
able to bind the port.

Brian

> -----Original Message-----
> From: Gene Dascher [mailto:gedascher@multiservice.com]
> Sent: Wednesday, April 03, 2002 1:06 PM
> To: Kclug
> Subject: Changing ports
> 
> 
> Hello all,
> 	How difficult is it to have one of my services (let's 
> say ssh) listen on a
> port other than the default for that service?
> 
> Thanks,
> Gene
> 
> 
> 
> majordomo@kclug.org
>