PPP over SSH

SSH - well defined, secure protocol

SSHv1 deprecated
SSHv2 supports RSA/DSA pubkey authentication, many ciphers

Server runs SSH daemon (OpenSSH) on port 22 by default

Client connects pppd process to server pppd process over secure SSH connection.

# pppd updetach noauth pty "ssh -tt server.example.com 'pppd noauth IP:IP'"