Firewall
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OPNsense WireGuard Site to Site Tunnel: Routing Setup
Connect two OPNsense networks with WireGuard, preserve IoT isolation, configure Allowed IPs and firewall rules, and troubleshoot CGNAT
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OPNsense Hardware Requirements: CPU, RAM & Storage
See the official OPNsense CPU, RAM and storage tiers, then size for gigabit routing, Suricata, VPNs, state tables and compatible NICs.
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OPNsense WireGuard Setup Problems: Handshake, NAT, MTU
Fix an OPNsense WireGuard tunnel that won't connect: read the handshake, then check the WAN rule, keys, allowed addresses, outbound NAT, DNS and MTU.