Blocking worm welchia attack on routers

Unanswered Question
Nov 6th, 2007

I have two cisco 1841 internet routers running 12.3 adv security code .I have a anti virus server in the network which shows a welchia worm attack on the network from internet but is unable to block it.Pl suggest any access-list or any method by which i can use my routers to block this

I have this problem too.
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htarra Tue, 11/13/2007 - 11:25

The problem is when the virus gets into your network, in that case the attack will come from the inside and the PIX will allow that traffic because the PIX assumes by default that all traffic from the inside is secure, that is why you needed to implement those conduits for the traffic from inside to outside, that is how we would avoid the virus from spreading.

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