RE: getting different ttl values for the same IP

From: Andrew Lacey (andrew.lacey@classicblue.com.au)
Date: Mon Jan 02 2006 - 21:12:25 EST


 
Just to clarify, Smart defence TTL scrambling will set all values to a
configurable value "default is 128" it does not change random ICMP
packets.

So far my money is on a load balancer...

-----Original Message-----
From: pentest@justinwaite.cjb.net [mailto:pentest@justinwaite.cjb.net]
Sent: Thursday, 29 December 2005 8:37 PM
To: pen-test@securityfocus.com
Subject: Re: getting different ttl values for the same IP

Hi Aqua,

I would sugest that the box you are tracing to is behind a Checkpoint
Firewall with Smart Defence enabled. Smart Defence has a TTL scrambling
ability to assist in the prevention of OS fingerprinting.

Justin

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