bugzilla-daemon@bugzilla.netfilter.org
2004-Sep-09 15:15 UTC
[Bug 72] ICMPs sent by REJECT are not getting SNAT'd
https://bugzilla.netfilter.org/bugzilla/show_bug.cgi?id=72
gandalf@netfilter.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |INVALID
------- Additional Comments From gandalf@netfilter.org 2004-09-09 15:15 CEST
-------
Your problem is that only packets with state NEW are traversing the nat table.
ICMP errors aren't state NEW, they are state RELATED so they will never
traverse
the nat table. But their ipaddresses will be changed according to the
NAT-mapping of the connection they are related to.
In order to get the ICMP errors translated you need to DNAT all incoming
connections that are made to 200.1.1.1 so they are changed to 10.1.1.1
iptables -t nat -A PREROUTING -d 200.1.1.1 -j DNAT --to 10.1.1.1
That way the ICMP errors that are sent from 10.1.1.1 will be translated
correctly.
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