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Cisco 4331 Routerip nat inside source static tcp 192.168.200.45 5000 interface GigabitEthernet0/0/0 5000%Port 5000 is being used by system any guesses?
router(config)#$00.45 5001 interface GigabitEthernet0/0/0 5001%Port 5001 is being used by system router(config)#$00.45 4999 interface GigabitEthernet0/0/0 4999%Port 5001 is being used by system