Where do you run ssh-keygen, server or client.

[Nathaniel Homier <nathaniel.homier@bresnan.net>]

I have 1 desktop computer (we will call it son) and it runs a ssh 
server.  When I visit my mothers house I would like to be able to access 
(son) from my mothers computer (we will call it mom).  I have setup the 
ssh server on (son) to use key based authentication.  Now the question 
is, do I run ssh-keygen on (son) or on (mom)?  What I have done is, on 
(son) is to:
$ssh-keygen -t dsa
$cd .ssh
$cat id_dsa.pub >> ~/.ssh/authorized_keys

I assume I take my id_dsa.pub to (mom) and hook it up with the latest 
Filezilla version and Putty?  Or do I do the ssh-keygen on (mom) and add 
the "id_dsa.pub" to (son)"~/.ssh/authorized_keys?
Son Etch
Mom Windows XP Pro

Nate