Post tagged: ssh

Two-factor SSH to Ubuntu 11.04 with Google Authenticator

Read on for instructions setting up two-factor auth for SSH logins under Ubuntu. I used 11.04 Natty Narwhal; other releases may require small tweaks.

Locking Down rsync Over SSH

For my most recent backup scheme, I needed to lock down rsync over OpenSSH while allowing scheduled syncing. I did it using the authorized_keys command="command" option to restrict access for a specific private key.

Abusing screen(1)'s Default Shell

Three other people will find this useful.