Lightweight, abysmal. 1. No discussion of private key only root logins (can be useful for backups even if you don't want admins logging in as root directly).

Lightweight, abysmal. 1. No discussion of private key only root logins (can be useful for backups even if you don't want admins logging in as root directly). 3. No discussion of ~/.ssh/config (far easier than having to type `-p 2222` every time you log in to that server).