OpenVPN support improves with each major release. Running old firmware means missing critical security patches and compatibility fixes. RouterOS 7.x offers significantly better OpenVPN features than version 6.
OpenVPN is a versatile, secure, and popular protocol for establishing virtual private networks (VPNs). When using it on a Mikrotik router (RouterOS), it provides high security but is often criticized for its complex configuration process, which involves certificate management, IP pools, profile creation, and complex firewall rules.
If you are on RouterOS v6, you must use TCP. UDP only works reliably on v7.1 and newer.
Make sure your router’s firewall allows incoming connections on the OpenVPN port (e.g., 1194 TCP/UDP) from the public internet. mikrotik openvpn config generator
v7 makes it easier to select GCM ciphers, which are hardware-accelerated on many MikroTik chips. Troubleshooting Common Issues
| OpenVPN Directive | MikroTik Requirement | Why? | | :--- | :--- | :--- | | dev tun | | RouterOS does not support tap mode. | | proto | tcp or udp | UDP is faster; TCP is more firewall-friendly. | | auth | SHA1 , SHA256 , SHA512 | Matches /ip ipsec proposal settings. | | cipher | AES-128-CBC or AES-256-CBC | GCM ciphers require RouterOS v7+ with specific config. | | tls-auth | Key direction 0 or 1 | RouterOS uses static key direction. Clients need key-direction 1 . |
Setting up OpenVPN on MikroTik RouterOS manually is a multi-step chore. You typically have to: OpenVPN support improves with each major release
: A standalone tool (available for macOS, Windows, and Linux) designed to handle the generation of configuration files, DH parameters, and certificates with secure defaults. While not MikroTik-exclusive, its "openvpn-generate" tool is highly effective for creating the client-side .ovpn files required by MikroTik.
The "root" that signs everything else. Set its key size to 4096 for modern security.
Modern hardware handles compression much better, improving throughput. OpenVPN is a versatile, secure, and popular protocol
This article serves a dual purpose:
Each certificate must be signed with specific key usages (like "TLS server" or "TLS client") and then exported with the private keys.