From: Simon Lodal <simonl@parknet.dk>
To: netfilter@lists.netfilter.org
Subject: DNAT hiding routers behind it
Date: Fri, 06 Aug 2004 19:25:13 +0200 [thread overview]
Message-ID: <4113BEF9.5090706@parknet.dk> (raw)
I am traceroute'ing a DNAT'ed host. Surprisingly, all routers between
the DNAT'ing firewall and the host appear as the IP address I am
traceroute'ing. Is this intended? Can it be controlled in some way? (it
is not necessarily bad)
Example:
traceroute to 217.116.235.62 (217.116.235.62), 30 hops max, 38 byte packets
1 192.168.0.2 (192.168.0.2) 4.152 ms 0.875 ms 0.865 ms
2 217.116.235.62 (217.116.235.62) 1.928 ms 1.272 ms 1.430 ms
3 217.116.235.62 (217.116.235.62) 2.013 ms 2.338 ms 2.330 ms
Line 1: DNAT'ing firewall.
Line 2: A router.
Line 3: DNAT'ed host.
I would the expect the router to show up with it's own IP address, not
the original target address.
Simon
next reply other threads:[~2004-08-06 17:25 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-08-06 17:25 Simon Lodal [this message]
2004-08-06 18:26 ` DNAT hiding routers behind it Dick St.Peters
2004-08-06 21:08 ` Simon Lodal
2004-08-06 22:56 ` Antony Stone
2004-08-07 2:51 ` Simon Lodal
2004-08-07 7:37 ` Antony Stone
2004-08-07 14:47 ` Simon Lodal
2004-08-11 20:29 ` Aleksandar Milivojevic
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