North American Network Operators Group
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Re: address spoofing

  • From: Simon Leinen
  • Date: Tue Apr 27 11:10:50 1999 
>>>>> "rb" == Randy Bush <[email protected]> writes:
> [...]
> but the uglier symptoms are packets from my own address space

>     deny ip 147.28.0.0 0.0.255.255 any (6 matches)

One of our customers has 129.129.0.0/16, and we sure receive a lot of
leaked packets with source and destination addresses in that range
from our upstream. (One of these days I'll try to get those traced :-)

147.28.0.0 doesn't seem like a likely "random" prefix though.  Maybe
an ex-customer/employee of yours didn't clean up their configuration
when they left?
-- 
Simon.				   http://www.switch.ch/misc/leinen/