On FreeBSD you can probably just use the following pf.conf line to block most of such attacks:
block in quick proto tcp from any os "Linux" to any port ssh (Note that with this you may lose the ability to login from any Linux based box including from an Android phone, etc) Of course it's wise to disable password authentication and just use public key authentication. Cheers, _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/
