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Teardrop false positive

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JoyriderUK

JoyriderUK

MIS
Apr 17, 2003
18
GB
I've got a VPN configured as follows


Nortel VPN Device --- Internet -- PIX -- Nortel VPN

Sadly, the PIX is dropping packets between Nortel boxes believing its a teardrop attack(I believe its because packet size is 1497, because the IPSec stuff is fragmenting the packets). I've disabled the relivant IDS signatures but problems, packet drops and syslogs errors persist.

Any thoughts?
 
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