Which ports are best for VPN?
- Point-to-Point Tunneling Protocol (PPTP) — Port 1723 TCP.
- Layer Two Tunneling Protocol (L2TP) — Ports 1701 UDP, 500 UDP and 4500 UDP.
- Internet Protocol Security (IPSec) — Ports 500 UDP and 4500 UDP.
- Secure Socket Tunneling Protocol (SSTP) — Port 443 TCP.
- OpenVPN — Ports 1194 UDP and 443 TCP.
