I config static pat at asa 5520 but static pat unreachable ,why?ciscoasa# show run: Saved:ASA Version 8.4(2) !!interface GigabitEthernet0nameif Insidesecurity-level 100ip address 12.1.1.2 255.255.255.0 !interface GigabitEthernet1nameif Outsidesecurit...