limit number of ssh connections
mr.festin at yandex.ru
Mon Sep 19 19:44:13 UTC 2011
If your target is protect freebsd box from bruting passwords from inet maybe security/knockd will help you?
19.09.2011, 23:05, "James Strother" <jstrother9109 at gmail.com>:
> Does anyone know a good way of limiting the number of ssh attempts
> from a single IP address?
> I found the following website, which describes a variety of approaches:
> But I am honestly not really happy with any of them. Continuously
> polling log files for regex hits seems...well crude. Just to give you
> an idea of what I mean, here were some of the issues I had. The
> sshd-scan.sh script allows IPs to be reinstated, but the timing is
> dependent on how frequently you rotate logs. sshguard has a pretty
> website, but I can't actually find much useful documentation on how to
> configure it. fail2ban looks like it might work with sufficient work,
> but the defaults are terrible. By default, every time an IP is
> reinstated, all IPs are reinstated. Not to mention, at present I
> can't seem to get it to trigger any hits.
> I suppose I could keep shopping, but the truth is I just think polling
> log files is the wrong way to solve the problem. Anything based on
> this approach is going to have a long latency and be highly dependent
> on the unspecified and unstable formatting of log files (see
> and the troubles an exclamation point can cause).
> I would much much rather do something like this:
> Does anyone know a way to do something similar with ipfw?
> Thanks in advance,
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