OpenSSH

Contents:

• Command note
• Print configuration
• Automatically add ssh keys to ssh-agent
• SSH keys
  • determine the fingerprint of a key
  • scp only key
• Hardware Keys
  • Add the key to ssh-agent
  • Put libfido2 into debug mode
• Forwarding
  • agent forwarding
  • restrictive Agent Forwarding
• certificate authentication
  • create the CA keypair
  • create a host key and sign it
  • check the host cert
  • create a user key and sign it
  • adjust the user’s config
  • check the options that a key was signed with
  • add the user_ca.pub file to the server’s sshd_config
• Disconnect from an SSH session
• Disconnect from a nested SSH session
• X11 forwarding not working
• get a fingerprint from a public key in your known_hosts file
• message too long