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From: "Sebastian 'spax' Pape" <pape@rbg.informatik.tu-darmstadt.de>
To: lartc@vger.kernel.org
Subject: Re: [LARTC] Hammer protection
Date: Mon, 01 Jul 2002 17:51:06 +0000	[thread overview]
Message-ID: <marc-lartc-102554595814940@msgid-missing> (raw)
In-Reply-To: <marc-lartc-102552716626714@msgid-missing>

hi Joachim,

> I want to deny a user who has just logged off .. for about
> 10seconds.
I think you can only limit the number of syn-pakets like you already
proposed.

> I tried with this, but that didn't work. Maybe my mind is going
> completely in the wrong direction today? =)
> 
> iptables -I INPUT -i eth0 -p tcp -s 0/0 -d $my_ip --dport 21 -m
> limit --limit 10/second --limit-burst 1 --tcp-flags ALL SYN -j
> ACCEPT
I'm not sure, but I think you just mixed the parameters up. --limit
10/second allows 10 SYN pakets per second so if you only want one
paket per 10 seconds you should perhaps try 6/minute or maybe say
1/minute and set the limit-bust to 3 or so.

best regards
		Sebastian

-- 
Sebastian 'spax' Pape          | I'm like time ... u can't stop me!  
mailto: sebastian@p-a-p-e.de   | 
gpg: http://p-a-p-e.de/gpg.asc | 
         --- Do you want to know more? http://www.p-a-p-e.de/ ---


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  parent reply	other threads:[~2002-07-01 17:51 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-07-01 12:40 [LARTC] Hammer protection Joachim Wickman
2002-07-01 13:00 `  Tobias Geiger
2002-07-01 17:51 ` Sebastian 'spax' Pape [this message]
2002-07-01 20:12 ` Joachim Wickman

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