Fw rule set question

[Juan B <juanbabi () yahoo com>]

hi,

I am evaluating a Fw rule set.

I see that source quench,icmp unreacheble and time
execeeded (all icmp) is allowed from the internet to
the internal network. this is a cisco pix. is it a
requirmnet that those rules will be opened? what
happened if I disbale them? is there a security risk
here? I dont rememmber seeing those rules opened in
any fw I saw..

thanks a lot !

Juan


       
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