Containerized Testing with Kerberos and SSH

What this post added

This post provides a detailed, end-to-end tutorial for setting up a local Kerberos test environment using Docker containers. It covers the configuration of a KDC server, an SSH server with Kerberos authentication enabled, and an SSH client that uses Kerberos tickets. Specific steps include principal creation, keytab generation, and network configuration within Docker. It also discusses two methods for user principal authentication (keytab and password) and provides guidance for different operating systems.