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From: "Svein E. Seldal" <Svein.Seldal@solidas.com>
Cc: netfilter@lists.netfilter.org
Subject: Re: Connection opening problem (prev: FTP/auth problems (slooow links))
Date: Tue, 15 Oct 2002 23:21:17 +0200	[thread overview]
Message-ID: <3DAC86CD.9030506@solidas.com> (raw)
In-Reply-To: 3DAA80EA.7070106@solidas.com

Hello,

The root of my problem was this:

 > [0:0] -A SYNFLOOD -m limit --limit 1/s --limit-burst 4 -j RETURN
 > [0:0] -A SYNFLOOD -j DROP
 > [0:0] -A CHECK -p tcp -m tcp --tcp-flags SYN,RST,ACK SYN -j SYNFLOOD

When the HTTP/FTP-clients etc. spawned several connections (in this case 
 >4) to download files, the router blocked them.

I guess that it adds protection to keep the SYNFLOOD check there. What 
are sensible values to use on -m limit, making it work for flooding, yet 
not stopping normal clients?

Thanks guys,
Svein



  reply	other threads:[~2002-10-15 21:21 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-10-13 13:08 FTP/auth problems (slooow links) Svein E. Seldal
2002-10-13 16:48 ` Alistair Tonner
2002-10-13 20:36   ` Svein E. Seldal
2002-10-14  9:52     ` Nuitari
2002-10-13 23:50 ` Antony Stone
2002-10-14  8:31   ` Connection opening problem (prev: FTP/auth problems (slooow links)) Svein E. Seldal
2002-10-15 21:21     ` Svein E. Seldal [this message]
2002-10-15 21:46       ` Antony Stone

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