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[FW1] Re: ICMP Stateful or NOT?



I have tried the supposed trick of setting Allow ICMP to 'Last', then 
putting in rules to allow outbound echo requests only.

This has never worked properly for me on 4.0.   The only way I could 
get echo to work is to expressly allow echo replies inbound, which 
means that there is no useful 'stateful inspection' of ICMP that I 
can tell.

I considered using Bill's stateful INSPECT code, but in the end 
decided that allowing echo replies inbound is not much of a risk -- 
at least if you have non-routable IP addresses.


turambar386
 
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