How do I prevent unauthorized ssh login attempts?

[Peter N. M. Hansteen]

" Andreas Wider?e Andersen " <wodfer at gmail.com> writes:

> How can I stop these attempts or block them - or even recognize them? I do
> not have IPF installed.

There are several packages which could help, the one I prefer is a
simple pf rule set which tracks the number of connection attempts per
time unit and puts the too-chatty ones in a doghouse list of addresses.

One way to do it is described at http://home.nuug.no/~peter/pf/en/bruteforce.html

-- 
Peter N. M. Hansteen, member of the first RFC 1149 implementation team
http://www.blug.linux.no/rfc1149/ http://www.datadok.no/ http://www.nuug.no/
"First, we kill all the spammers" The Usenet Bard, "Twice-forwarded tales"
delilah spamd[29949]: 85.152.224.147: disconnected after 42673 seconds.