From: Dāvis <davikovs@gmail.com>
To: netfilter@vger.kernel.org
Subject: Translation of addresses inside ICMP errors
Date: Tue, 13 Mar 2012 12:10:08 +0200 [thread overview]
Message-ID: <4F5F1D00.7030901@gmail.com> (raw)
In-Reply-To: <CAHQn7pLfLuYS=XC1SYxYNPxL35aMD_pU8dd6mFt-FFRiqsrAAg@mail.gmail.com>
When packets are NATed (in very typical case with SNAT when leaving
internal network) their IP addresses in IP header are adjusted. ICMP
error messages sent via router (running netfilter and doing translation)
however contain unmodified "IP Header + First 8 Bytes of Original
Datagram's Data" of packets sent in internal network (i.e. IP addresses
inside ICMP error messages aren't translated). Is this expected behavior
of netfilter? Is it possible to translate IP addresses inside ICMP
messages using netfilter?
next parent reply other threads:[~2012-03-13 10:10 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CAHQn7pLfzDNrEsUawtqeE_yyeqKpUp4n-E=mTaghwdRoJWo5oQ@mail.gmail.com>
[not found] ` <CAHQn7pLfLuYS=XC1SYxYNPxL35aMD_pU8dd6mFt-FFRiqsrAAg@mail.gmail.com>
2012-03-13 10:10 ` Dāvis [this message]
2012-03-13 20:58 ` Translation of addresses inside ICMP errors Dāvis
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