From: "Jay L.T. Cornwall" <jay@esuna.co.uk>
To: netfilter@lists.netfilter.org
Subject: Re: ipt_owner and ICMP
Date: Sun, 19 Mar 2006 00:26:35 +0000 [thread overview]
Message-ID: <441CA53B.6010606@esuna.co.uk> (raw)
In-Reply-To: <441CA43E.1040706@zoomnet.ro>
Alexandru Dragoi wrote:
>> This works fine for UDP and TCP, but my outgoing ICMP packets never match
>> the rule. I understand why incoming ICMP should fail to match, but why are
>> outgoing packets missing the filter?
> I think this is because icmp packets are just generated and sent away by
> some part of the kernel after it received a syscall from a program with
> uid 0 (only root can use icmp).
Oh, of course! *slaps head*
Ping was running as setuid root. I feel silly now, thanks for pointing
that out. :)
--
Jay L.T. Cornwall, http://www.esuna.co.uk/~jay/
PhD Student
Imperial College London
prev parent reply other threads:[~2006-03-19 0:26 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-03-18 18:34 ipt_owner and ICMP jay
2006-03-19 0:22 ` Alexandru Dragoi
2006-03-19 0:26 ` Jay L.T. Cornwall [this message]
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