ZyXEL Communications P-660R-T1 Support Notes page 63

P-660 series Support Notes
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WAN device output an d call filter sets.
The sequence of the logic flo w for the packet from WAN to LAN is:
WAN device input filter sets.
If SUA is enabled, SUA converts the destination IP address from 203.205.115.6 to
92.168.1.33 and port number from 4034 to 1023.
WAN protocol input filter sets.
LAN device and protocol output filter sets.
Gen eric and TCP/IP (and IPX) filter rules are in different filter sets. The SMT will
detect and prevent the mixing of different category rules within any filter set in Menu
21. In the following example, you will receive an error message 'Protocol a nd device
filter rules cannot be active together' if you try to activate a TCP/IP (or IPX) filter
rule in a filter set that has already had one or more active Generic filter rules. You will
receive the same error if yo u try to activate a Generic filter rule in a filter set that has
already had one or more active TCP/IP (or IPX) filter rules.
Menu 21.1.1:
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