allowing ssh?

[Nathan Moore]

Have YDL 2.3 installed on an old Beige G3.  Would like to be able to 
allow ssh to that machine from the outside world.

At present, when I try to ssh to the Beige G3 (hostname similar to 
mac469.ctc.um.edu) it I get message,

 > ssh mac469.ctc.um.edu
ssh: connect to host mac469.ctc.um.edu port 22: Connection refused

I can ssh to the outside world from this Beige G3.

I assume there's something in /etc that I have to change to allow 
incoming ssh?

regards,

Nathan