gre
GRE Explained: The Layer-3 Tunnel That Wraps Everything and Encrypts Nothing
This post is part of Protocol Lab, a free, hands-on series for learning networking protocols by building and breaking them in a container lab. All the lab material — topologies, configs, and scripts — lives in the repo: github.com/pathvector-studio/protocol-lab. This lab completes a small trilogy of tunnels. GRE (Generic