SSH Change between Panther and Tiger?


I'm running a small home network. I have a dual G5 running 10.3.9, a
single G5 running 10.4.2, and a mini also running 10.4.2. I notice that
when I mount disks from either of the tiger boxes (using the drop down
"connecto to server") on my panther box, I get a warning that I can't
make a secure connection to that machine via SSH. I can connect using
reduced security (rsh?).

My question is then "Was there a change between Panther and Tiger in
the way SSH is handled? If so, how do I work around this issue. If not,
any ideas about what networking things I may have set incorrectly?"

Oops, I just realized that was three questions and not just one...

thanks in advance,
uncle dan