Which command shows active NAT translations on a device?

The command that displays active NAT translations is "show ip nat translations." This command provides a detailed list of the current translations occurring on the router, including the inside local and inside global addresses for each session. It is particularly useful for troubleshooting NAT issues, as it shows which devices are currently using NAT for their IP address translations in real-time.

By using this command, network administrators can verify whether the expected IP addresses are being translated correctly and monitor the active connections that depend on NAT, thus ensuring proper network operations and connectivity through the device.

The other commands serve different purposes; for instance, "show ip nat statistics" gives an overview of NAT operations, such as the number of translations that have occurred and whether any errors have been logged, but it does not list current active translations. The command "show ip interface brief" provides a summary of the interfaces and their operational status, not related to NAT. Finally, "show route" displays the routing table of the device, which does not give information on NAT translations.