What are the steps to connect to a PPTP VPN on Kali Linux?

Kali Linux supports two methods: via GUI (install `network-manager-pptp` and configure VPN settings, ensuring to remove PAP/CHAP/EAP and enable MPPE) or via command line using `pptpsetup --create vpn --server <IP> --username <user> --password <pass> --encrypt --start`. After connecting, adjust the routing table with `route add default gw <remote-ip>`. For full details, refer to the Kali section in Penetration Techniques - Acquisition and Brute-Force of PPTP Passwords.