Traceroute records router interfaces. For example, if I have a router whose
Ethernet interface is 10.0.0.1, and serial interface is 192.168.0.1, when I
traceroute through it, the interface that traceroute reports back would be
the first interface it hits. If I'm tracing from inside, then traceroute
would tell me that router is identified as 10.0.0.1. If that router is
running NAT, then out going traffic would know that router as 192.168.0.1,
since that's the interface that traffic is originating from.
-----Original Message-----
From: Fab Siciliano [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, September 12, 2001 11:14 AM
To: [EMAIL PROTECTED]
Subject: Work with techies that don't help you out.
Hey everyone. Terrible stuff goin on these days...let's hope we find a
solution to a all this chaos.
Ok, for the question. (This may be a stupid question BTW.)
Let's say I have a router. Doing NAT. When I send an email to another
office, the source ip is different from the IP I get when I do a
traceroute, and it leaves my network.
For instance. I send an email to [EMAIL PROTECTED] In his header, it
says that the Source address is 204.186.240.123.
When I do a traceroute to an external domain the address of the device when
it leaves my network, is 204.186.240.124.
Why would these addresses be different? Thanks
-Fab
