From: Franck Veysset (franck.veyssetrd.francetelecom.com)
Date: Wed Oct 05 2005 - 07:40:54 CDT

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Hello,

You can have a look at the p0f fingerprint file. It contains
a huge bunch of initial TTL for different OS.

See :
http://lcamtuf.coredump.cx/p0f.shtml

and more particularly the p0f.fp file in the archive.

Regards,
-Franck

BSK said the following on 04/10/2005 16:07:
> Dear All,
>
> Some time back I came across a document that listed a
> table with Operating systems and their TTL that helped
> identify an operating system.
>
> I've been trying to search that document on Internet
> and my machine but not successful yet. Can someone
> point me to that or similar document.
>
> Basically I'm looking for information which helps us
> identify the target operating system from its TTL
> field obtained while ping. The document for example
> listed that if the TTL is 128 its likely to be M$ and
> if its 64 its likely to be Cisco Router or switch.
>
> Await your reply.
>
> rgds,
> Bshan
>
>

--
Franck VEYSSET - & france telecom - R&D Division/MAPS/NSS
Senior Expert - Internet/Intranet Security

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