CCNA Foundations: Dynamic NAT — Translate from an Address Pool

Today's daily lab

Deploy dynamic NAT on an enterprise edge so multiple inside clients share a pool of public IPs. You will configure an ACL to match inside sources, build a public NAT pool, bind the ACL to the pool, and correctly mark inside/outside interfaces. Validate from end hosts and confirm on-demand translations on the edge router.

Learning objectives

• Identify and mark correct inside and outside NAT interfaces
• Define a public address pool and bind it to an inside source list
• Verify dynamic NAT translation creation and aging using show commands
• Troubleshoot missing translations due to ACL or pool/netmask errors
• Confirm return routing exists toward the pool on the upstream router

Troubleshooting focus

• Verify every link's interface status and IP addressing (`show ip interface brief`) and correct any interface that is down or misaddressed.
• Confirm each device's running configuration matches the lab objective, and bring any interface, route, or service that is not in its expected state back to health.
• Trace end-to-end reachability with ping/traceroute and isolate the first hop where forwarding fails.