From owner-freebsd-questions@FreeBSD.ORG  Wed Mar 27 01:59:17 2013
Return-Path: <owner-freebsd-questions@FreeBSD.ORG>
Delivered-To: freebsd-questions@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org
 [IPv6:2001:1900:2254:206a::19:1])
 by hub.freebsd.org (Postfix) with ESMTP id 14FAECE9
 for <freebsd-questions@freebsd.org>; Wed, 27 Mar 2013 01:59:17 +0000 (UTC)
 (envelope-from gmx@ross.cx)
Received: from www81.your-server.de (www81.your-server.de [213.133.104.81])
 by mx1.freebsd.org (Postfix) with ESMTP id CF9F16AD
 for <freebsd-questions@freebsd.org>; Wed, 27 Mar 2013 01:59:16 +0000 (UTC)
Received: from [178.3.55.96] (helo=michael-think)
 by www81.your-server.de with esmtpsa (TLSv1:AES256-SHA:256)
 (Exim 4.74) (envelope-from <gmx@ross.cx>)
 id 1UKfdy-0004ia-Vi; Wed, 27 Mar 2013 02:59:15 +0100
Content-Type: text/plain; charset=iso-8859-15; format=flowed; delsp=yes
To: freebsd-questions@freebsd.org, "Daniel O'Callaghan" <danny@clari.net.au>
Subject: Re: Client Authentication
References: <B2DC7342-9F1A-489A-94F0-49802B1E5DF6@lafn.org>
 <20130326171812.GA20118@shellx.eskimo.com> <51521995.5080203@clari.net.au>
 <op.wukulmoxg7njmm@michael-think> <51523F50.3040205@clari.net.au>
Date: Wed, 27 Mar 2013 02:59:06 +0100
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
From: "Michael Ross" <gmx@ross.cx>
Message-ID: <op.wuk04sadg7njmm@michael-think>
In-Reply-To: <51523F50.3040205@clari.net.au>
User-Agent: Opera Mail/12.14 (Win32)
X-Authenticated-Sender: gmx@ross.cx
X-Virus-Scanned: Clear (ClamAV 0.97.6/16909/Tue Mar 26 23:44:40 2013)
X-BeenThere: freebsd-questions@freebsd.org
X-Mailman-Version: 2.1.14
Precedence: list
List-Id: User questions <freebsd-questions.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/freebsd-questions>, 
 <mailto:freebsd-questions-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-questions>
List-Post: <mailto:freebsd-questions@freebsd.org>
List-Help: <mailto:freebsd-questions-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
 <mailto:freebsd-questions-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Wed, 27 Mar 2013 01:59:17 -0000

On Wed, 27 Mar 2013 01:37:36 +0100, Daniel O'Callaghan  
<danny@clari.net.au> wrote:

> On 27/03/2013 10:37 AM, Michael Ross wrote:
>>> 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.
> OK, here 'tis
>
> https://secure.clari.net.au/ratelimit2.tgz
>
> Danny

Thanks!

I'd like to be able to change the time window:

http://gurder.ross.cx/misc/ratelimit.patch



Regards,

Michael