From: Phil Oester <kernel@linuxace.com>
To: Jim Mellander <jmellander@lbl.gov>
Cc: netfilter@vger.kernel.org
Subject: Re: iptables as landmine subnet rejector
Date: Tue, 19 Nov 2013 08:23:57 -0800 [thread overview]
Message-ID: <20131119162357.GA13678@home> (raw)
In-Reply-To: <CADju=b5v+BhTrqXm1gm5h8Q6vB-ufV_FLRcg8cjA75zV9rfvgQ@mail.gmail.com>
On Thu, Nov 14, 2013 at 09:12:07AM -0800, Jim Mellander wrote:
> tcpdump output:
> 1384448210.669303 IP bad_host.23870 > landmine_host.61871: UDP, length 20
> 1384448210.669325 IP myip > bad_host ICMP bad_host udp port 61871
> unreachable, length 56
>
> Note that the ICMP port unreachable didn't come from landmine_host, as expected.
That is how the REJECT target works. The ICMP will come from the gateway.
Phil
next prev parent reply other threads:[~2013-11-19 16:23 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-07 23:14 iptables as landmine subnet rejector Jim Mellander
2013-11-13 17:58 ` Jim Mellander
2013-11-13 22:17 ` Phil Oester
2013-11-14 17:12 ` Jim Mellander
2013-11-19 16:23 ` Phil Oester [this message]
2013-11-19 19:33 ` Jim Mellander
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