Learn exactly how to expose a private IIS web server to the internet using Cisco static NAT.
We configure ip nat inside source static, inside-local, inside-global, set Gi0/0/0 as the outside and Gi0/0/1 as the inside, then verify with show ip nat translations, active translations, and hit counters. You’ll see how PAT still differentiates simultaneous sessions to TCP/80, why RFC1918 addresses aren’t reachable on the internet, and how to troubleshoot by clearing/adding entries and checking interfaces. We even telnet from the ISP router to the public IP to compare sources.
Perfect for CCNA prep and anyone deploying a lab or home server behind NAT. Next up: dynamic NAT with address pools.
What you’ll learn
Static NAT mapping (inside-local → inside-global)
Inside vs outside interface roles
Verifying NAT & PAT sessions with show ip nat translations
Hits/misses counters & active translations
Quick break/fix workflow to validate your setup
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0:00 – Intro
0:22 – Accessing the Server
01:33 – NATing the Private IP to the Public IP
05:33 – Topology
05:50 – Doing the Configuration Again
08:39 – Connecting to the Server with a Phone
09:01 – Connecting to the ISP Router
10:30 – Conclusion
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Disclaimer: This video is for educational purposes only.
#ccna #nat #cisco
