Inside, Outside & the Translation Table

Bundle lab · $29.99

Configure static one-to-one NAT for two inside hosts on R1, mark inside/outside interfaces correctly, and read the four-column NAT translation table (inside local/global, outside local/global). Verify from both sides and relate observed traffic to table entries.

Learning objectives

• Identify and mark NAT inside vs. outside interfaces on an IOS edge router
• Configure two static one-to-one NAT translations for specific inside hosts
• Interpret all four NAT table columns: inside local/global and outside local/global
• Validate successful translation and return traffic using host pings and router show commands
• Relate NAT statistics and translations to real flows to and from the ISP segment

Troubleshooting focus

• Interfaces not marked with ip nat inside/outside (no translations appear)
• Wrong public addresses (not on the outside /29) cause return traffic to fail
• Missing default route on R1 prevents outbound reachability even if NAT is correct