RE: Traceroute Question

From: Jorge Coll (jc@commonx.com)
Date: Mon Apr 07 2003 - 11:22:16 EDT


Sometimes ISPs assign their internal routers an IP in this address range
(192.168.*.* / 10.*.*.* / etc). These addresses aren't uniquely
addressable (i.e. you can't "ping" them from various locations and
expect either a response, or a response from that particular host.) The
routers (especially border ones) are supposed to be configured NOT to
route these private ranges, so it is ok for them to use a non-public
address on these routers.

~ ).(.

-----Original Message-----
From: Vineet Mehta [mailto:vineet@linux.com.kw]
Sent: Monday, April 07, 2003 4:20 AM
To: pen-test@securityfocus.com
Subject: Traceroute Question

Hi all,

While trying to do traceroute on one of the server i get the following
reply:

$traceroute a.b.c.d
 1 192.168.0.254 (192.168.0.254) 0.442 ms 0.397 ms 0.358 ms
 2 62.150.42.1 (62.150.42.1) 1.951 ms 1.315 ms 1.249 ms
 3 172.17.8.149 (172.17.8.149) 43.577 ms 23.481 ms 17.653 ms
 4 border.qualitynet.net (195.226.227.1) 19.935 ms 20.902 ms 21.896
ms
 5 isp.qualitynet.net (195.226.227.10) 19.928 ms 23.302 ms 21.839 ms
 6 192.168.226.38 (192.168.226.38) 71.321 ms 282.457 ms *

My Question is why I am getting 192.168.226.38 non-route able address
output in traceroute reply? As far as i think these private address
space is not route able on the internet.

Any sugestions?

Vineet

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