Re: ICMP type 8 code 80?

[Ian Bowers <iggdawg () gmail com>]

Looks like a breadcrumb or phone-home packet.  non-existant type/code combo
and repeating payload.   both very easy to spot in a network stream if you
know what you're looking for.   not sure why it would get sent out to you
though, unless you're on a dynamic address and it was meant for the
previous occupant of the address.  Another possibility is a researcher
sending out an intentionally broken packet to see how different hosts
respond.

-Ian

On Thu, Jul 26, 2012 at 10:43 AM, Castle, Shane
<scastle () bouldercounty org>wrote:

> I received a number of these early today:
>
> ------------------------------------------------------------------------
> Count:1 Event#8.306289 2012-07-26 10:37:35
> GPL ICMP undefined code
> 67.220.42.22 -> 192.168.13.92
> IPVer=4 hlen=5 tos=0 dlen=60 ID=27393 flags=0 offset=0 ttl=13 chksum=1738
> Protocol: 1 Type=8 Code=30 chksum=17093 ID=46085 seq=0
> Payload:
> 83 C7 2E 00 EF BE AD DE EF BE AD DE EF BE AD DE ................
> EF BE AD DE EF BE AD DE EF BE AD DE EF BE AD DE ................
>
> Anybody have a clue what ICMP Type 8 Code 30 might mean?
>
> --
> Shane Castle
> Data Security Mgr, Boulder County IT
> CISSP GSEC GCIH
>
>
>
>
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