Not all VPN protocols are created equal. From the fundamentally broken PPTP to the modern cryptographic elegance of WireGuard, selecting the right protocol dictates the confidentiality and integrity of your remote connections.
PPTP relies on MS-CHAPv2, which can be cracked in hours. L2TP adds a tunneling layer but relies entirely on IPsec for actual encryption. OpenVPN uses SSL/TLS, offering high configurability and strong security via UDP/TCP.
💡 Pro-tip: Avoid PPTP and L2TP/IPsec for new deployments. The NAT-traversal issues and complex pre-shared key management of L2TP make it inferior to modern alternatives.
# OpenVPN client connection configuration
client
dev tun
proto udp
remote vpn.vulnarex.com 1194
cipher AES-256-GCMThis configuration specifies a modern, secure OpenVPN connection using UDP for performance and AES-256-GCM for authenticated encryption.
WireGuard is a modern protocol built into the Linux kernel. It uses state-of-the-art cryptography (Curve25519, ChaCha20) and requires only a fraction of the code lines of OpenVPN, resulting in massive performance gains and easier auditing.
⚠️ While WireGuard is cryptographically superior, it does not natively support dynamic IP assignment or complex routing without additional wrapper scripts (like wg-quick or Tailscale).
| Protocol | Security | Performance |
|---|---|---|
| PPTP | Broken | High |
| L2TP/IPsec | Strong | Medium |
| OpenVPN | Strong | Medium |
| WireGuard | Excellent | Very High |
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