From: "Remzi AKYÜZ" <linuxliste@gmail.com>
To: Andre Schild <a.schild@aarboard.ch>
Cc: netfilter@vger.kernel.org
Subject: Re: How to debug RST filter ?
Date: Mon, 01 Feb 2010 10:05:54 +0200 [thread overview]
Message-ID: <4B668B62.1090200@gmail.com> (raw)
In-Reply-To: <LB95CFD713BF44ce1B06C76BE068BFE90.1265010613.scalix01.aarboard.ch@MHS>
Hello,
Can you see "RULE 17"?
Andre Schild wrote:
> Hello,
>
> we are using Debian 2.6.26-2-amd64 with a database server listening on
> tcp port 2638.
> Usually everything works just fine, but sometimes we get connection
> errors on the server, and then, each time we see firewall entries like
> this in the syslog:
>
>
> Feb 1 07:41:26 sv16 kernel: [34944777.631090] RULE 17 -- DENY IN=
> OUT=lo SRC=188.myip DST=188.myip LEN=40 TOS=0x00 PREC=0x00 TTL=64 ID
> =0 DF PROTO=TCP SPT=41562 DPT=2638 SEQ=1506091366 ACK=0 WINDOW=0
> RES=0x00 RST URGP=0
> Feb 1 07:41:29 sv16 kernel: [34944786.286850] RULE 17 -- DENY IN=
> OUT=lo SRC=188.myip DST=188.myip LEN=40 TOS=0x00 PREC=0x00 TTL=64 ID
> =0 DF PROTO=TCP SPT=41562 DPT=2638 SEQ=1506091366 ACK=0 WINDOW=0
> RES=0x00 RST URGP=0
>
> In the firewal we even have a rule which allows everything in/out on the
> lo interface.
>
> It looks like there are some timeouts or state filters which do not work
> as intended by us.
>
> Any ideas how I can debug this ?
> I can't trace all the traffic on the lo interface, because there is
> quite heavy load/traffic
> on that interface.
>
> André
> --
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next prev parent reply other threads:[~2010-02-01 8:05 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-02-01 7:50 How to debug RST filter ? Andre Schild
2010-02-01 8:05 ` Remzi AKYÜZ [this message]
2010-02-01 8:13 ` a.schild
2010-02-01 18:54 ` Mart Frauenlob
2010-02-01 19:29 ` Pascal Hambourg
2010-02-02 6:42 ` Andre Schild
2010-02-02 6:46 ` a.schild
2010-02-02 2:26 ` Regarding Iptables Redirect Target rule Vikram Ragukumar
2010-02-02 19:18 ` Pascal Hambourg
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