From: "Gáspár Lajos" <swifty@freemail.hu>
To: Pat Riehecky <prieheck@iwu.edu>
Cc: netfilter@lists.netfilter.org
Subject: Re: Conntrack rule timeout problem
Date: Wed, 23 May 2007 14:47:29 +0200 [thread overview]
Message-ID: <465437E1.9030600@freemail.hu> (raw)
In-Reply-To: <1179765250.12001.18.camel@thales.lan>
Hi,
Pat Riehecky írta:
> I seem to be capturing way more packets than I intend (or even expect!).
> I am running squid and have the firewall rules below running on it. For
> some reason I am capturing hundreds of packets that I don't think should
> be caught.
>
Maybe someone is scanning you....
> I have increased the timeouts in /proc/ (via sysctl) to fix this, but no
> dice. Anyone have any idea why the sample packet below would be
> captured? It is getting picked up by either the
> -A INPUT -p tcp -m tcp ! --syn -m conntrack --ctstate INVALID -j DROP
> but sometimes the
> -A INPUT -p tcp -m tcp ! --syn -m state --state NEW -j DROP
>
Take a look on nmap...
> The packet looks to have been requested by squid, it is coming on port
> 80... I also seem to be having the same behavior on the squid side
> where the FIN/ACK packets are being caught by the conntrack rule...
>
> I know I have something wrong, just what exactly is eluding me...
>
> Any help would be helpful!
>
Swifty
next prev parent reply other threads:[~2007-05-23 12:47 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-21 16:34 Conntrack rule timeout problem Pat Riehecky
2007-05-23 12:47 ` Gáspár Lajos [this message]
2007-05-23 13:42 ` Pat Riehecky
2007-05-23 16:27 ` Gáspár Lajos
2007-05-24 14:16 ` Pat Riehecky
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=465437E1.9030600@freemail.hu \
--to=swifty@freemail.hu \
--cc=netfilter@lists.netfilter.org \
--cc=prieheck@iwu.edu \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.