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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


             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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