rate limiting sshd connections ?

[Roger Marquis]

>in fact, I've seen an Apple XServe (two G4 1GHz processors) running
>MacOS X Server beeing DOSed by a remote Nagios probe testing it's
>sshd once per minute.

Once per minute?  That's extremely unusual.  Do you mean once per
second?  I've got a Via M9000 that runs at 1GHz and has inetds
listening on several IPs that doesn't slow down with multiple
simultaneous nmaps.

>On OSX, sshd runs from xinetd.

Sounds like a configuration issue.

-- 
Roger Marquis
Roble Systems Consulting
http://www.roble.com/