show Commands
The show ip nat
statistics command is used to display statistics on static and
dynamic translations on the router, as shown in Figure
.
The
show ip nat translations command displays the NAT table
currently in operation on the router, listing both static and dynamic NAT
entries.

The show ip nat translations command also has the
optional keywords icmp, pptp,
tcp and udp, which limits the type of
entries displayed. The verbose keyword displays additional information
about the entries in the table.
debug
Commands
There is a range of debug commands
available for reporting on NAT traffic. A commonly used command is
debug ip nat. This command can also have the information
displayed limited to events for specific protocols and processes using the
keywords h323, port,
pptp, route,
skinny, and detailed.

clear Commands
Use the command clear
ip nat statistics to reset the NAT traffic statistics counters. Use
the command clear ip nat translation * to clear dynamic
entries from the NAT table.

Other
keywords can be used when clearing the NAT table. The
forced keyword clears all IP NAT translations even if they
are currently in use. The inside keyword removes all inside
addresses and ports from the table, while the outside
keyword removes all outside addresses and ports. Using the
tcp keyword only removes TCP-related entries. Using the
udp keyword only removes UDP-related NAT entries.