On Thu, 9 Jul 2009 08:45:10 -0500 (CDT) "Jeremy C. Reed" <reed@xxxxxxxxxxxxx> wrote: > I thought I saw a patch or feature for an sshd for > blocking max connections per client, max failed > authentication attempts per client, and/or max > authentication attempts per client . Does anyone know > about that? > > Or do any less popular open source SSH servers provide > that? (Keep counter of connections, attempts, failures > per client?) OpenBSD has an option using pf to catch bruteforce attacks. You basically specify a limit on connection attempts on a port from one place. When someone exceeds those attempts, it adds them to a table and denies them further access. Eric
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