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Rule Play When?

Lets say I wanted to allow msn. Would my packet filter rule be to allow From WAN_Interface to Internal_Network or Any to WAN_Interface ?

Im a little confused on when the rule comes into play.

Thanks   


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  • [ QUOTE ]
    Lets say I wanted to allow msn. Would my packet filter rule be to allow From WAN_Interface to Internal_Network or Any to WAN_Interface ?

    Im a little confused on when the rule comes into play.

    Thanks    

    [/ QUOTE ]
    Packet filter rules come into play after masq and dnats.
    If you want to allow MSN to connect out from your internal network do something like this:
    Code:
    Internal_Network__  	MSN Connect  	Any  	Allow 



    Where "MSN Connect" = A service def.