Date: Wed, 27 Mar 2013 00:37:59 +0100 From: "Michael Ross" <gmx@ross.cx> To: freebsd-questions@freebsd.org, "Daniel O'Callaghan" <danny@clari.net.au> Subject: Re: Client Authentication Message-ID: <op.wukulmoxg7njmm@michael-think> In-Reply-To: <51521995.5080203@clari.net.au> References: <B2DC7342-9F1A-489A-94F0-49802B1E5DF6@lafn.org> <20130326171812.GA20118@shellx.eskimo.com> <51521995.5080203@clari.net.au>
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On Tue, 26 Mar 2013 22:56:37 +0100, Daniel O'Callaghan <danny@clari.net.au> wrote: > On 27/03/2013 4:18 AM, Joseph Olatt wrote: >>> Any ideas/suggestions on this will be appreciated. Thanks, >>> > >>> >-- Doug >> A little while back I wrote a system to do a simple Two Factor >> Authentication and dynamic manipulation of PF (Packet Filter) Tables. I >> created it to prevent brute-force attacks on the servers that I have >> exposed on the Internet. > I'm happy to share a program I wrote which slows down the brute force > attackers. > It simply counts the SYN packets from a given IP and limits the rate per > minute by dropping the packet if they are coming too fast. > > Uses ipfw divert sockets, so would work if you prefer ipfw over pf. Me Me Me! ...ahem. I do prefer IPFW over PF and would very much like to try it out, so please do share. Regards, Michael
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