Hyper-V Lab Networking: A NAT vSwitch With One Outbound IP
You’ve got a Hyper-V lab on your laptop or a spare server. You want the guest VMs to reach the internet for Windows updates, package installs, license activation, and the…
Tag: NAT
NAT Deep Dive: PAT, Connection Tracking, and the Workarounds Around It
Networking from Scratch (lesson 15) — the three flavours of NAT (static, dynamic, PAT), how port translation actually multiplexes one public IP across hundreds of inside hosts, the conntrack table that makes it work, why STUN/TURN/ICE exist, what CGNAT does to your mobile traffic, and why IPv6 throws the whole machinery away.
Cisco IOS NAT and PAT: Static, Dynamic, and Overload Configuration
Working reference for the four NAT modes on Cisco IOS. The inside-local / inside-global / outside-global vocabulary that confuses everyone the first time, the ip nat inside / ip nat outside interface markings (most common cause of broken NAT), Static NAT with full IP and port-specific variants, Dynamic NAT with a public pool, PAT (overload) with the WAN interface IP and with a pool, the show ip nat translations and statistics commands, clear ip nat translation, and the pitfalls (missing markers, ACL gaps, PAT port exhaustion, NAT/IPsec interaction).