From: Rusty Russell <rusty@linuxcare.com.au>
To: safemode <safemode@voicenet.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: (iptables) ip_conntrack bug?
Date: Fri, 17 Nov 2000 13:01:16 +1100 [thread overview]
Message-ID: <20001117020116.99DAC813F@halfway.linuxcare.com.au> (raw)
In-Reply-To: Your message of "Wed, 15 Nov 2000 15:46:03 CDT." <20001115154603.D4089@psuedomode>
In message <20001115154603.D4089@psuedomode> you write:
> I was DDoS'd today while away and came home to find the firewall unable to
> do anything network related (although my connection to irc was still
> working oddly). a quick dmesg showed the problem.
> ip_conntrack: maximum limit of 2048 entries exceeded
> NET: 1 messages suppressed.
> ip_conntrack: maximum limit of 2048 entries exceeded
> NET: 3 messages suppressed.
> ip_conntrack: maximum limit of 2048 entries exceeded
> NAT: 0 dropping untracked packet c1e69980 6 192.168.1.2 -> 206.251.7.30
> ip_conntrack: maximum limit of 2048 entries exceeded
> NAT: 0 dropping untracked packet c1e69b60 6 192.168.1.2 -> 206.251.7.30
> ip_conntrack: maximum limit of 2048 entries exceeded
Yes, I added connection assurance (which provides much more
intelligence about which connections should be dropped,
ie. established TCP connections get assured) in test6, for exactly
this reason.
Hope that helps,
Rusty.
--
Hacking time.
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next prev parent reply other threads:[~2000-11-17 2:31 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-11-15 20:46 (iptables) ip_conntrack bug? safemode
2000-11-15 21:19 ` Guus Sliepen
2000-11-15 21:34 ` safemode
2000-11-15 22:54 ` Guus Sliepen
2000-11-15 23:03 ` Dan Aloni
2000-11-15 23:42 ` Dan Aloni
2000-11-16 0:00 ` Dan Aloni
2000-11-17 2:50 ` Rusty Russell
2000-11-17 2:01 ` Rusty Russell [this message]
-- strict thread matches above, loose matches on Subject: below --
2000-11-15 23:47 Samium Gromoff
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