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WireGuard vs OpenVPN on pfSense: a decision guide that weighs throughput, authentication, and NAT traversal. Includes quick config snippets and validation steps for CE and Plus editions.
When extending a corporate network with pfSense, choosing the right VPN backend—WireGuard, OpenVPN, or IPsec—depends on performance, client support, and regulatory constraints. This guide compares features, trade‑offs, and walks through a WireGuard setup between pfSense and an Ubuntu client.
A practical pfSense OpenVPN remote-access build: certificate setup, UDP server settings that avoid subnet conflicts, scoped firewall rules on the OpenVPN interface, and clean client exports.
Goal: Select a site‑to‑site VPN mechanism for two pfSense 2.7.x firewalls that must operate on a CPU with limited AES‑NI support while also needing to traverse existing NAT devices without manual port forwarding. IPsec benefits from hardware‑accelerated encryption, reducing per‑Mbps CPU load, but its default configuration struggles with symmetric NAT and oft