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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 concise architecture guide for deploying Opera’s VPN in a corporate environment, covering functional needs, minimal design, trust boundaries, operational checks, failure modes, and when to redesign.
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