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Re: Strange Large ICMP packets IDS246



On Mon, Nov 18, 2002 at 11:54:01PM +0100, Marcel Weber wrote:
> Hi
> 
> Today I had a whole bunch of large ICMP packages on the company's LAN 
> (about 20).
> Interesting is, that they came mostly from the Windows 2000 Servers. I
> discovered the first of these packages 2 or 3 weeks ago.
> 
> These packets are long (2090 Bytes) and not filled with nulls, but with
> more or less weird content. They have no "Don't fragment" flags set, so I
> wonder where they come from and what they good for.
> 
> Has anybody seem such packets yet? (See attachment)
> 
> Regards
> 
> Marcel

It seems to me like tunelling something inside ICMP protocol. And that
JFIF - isn't something similar in JPEG headers? Aren't these Win2000
servers hacked? Just an idea :)

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Arne Rusek                                                 <zonk@yo.cz>
Phone:                                                    +420732673195
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