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Step‑by‑step guide to configure pfSense HA with CARP, including prerequisites, VIP configuration, XMLRPC sync, verification, and failover recovery.
My network setup involves two firewalls in a Common Address Redundancy Protocol (CARP) group, each connected to an MLAG (Multi-Chassis Link Aggregation) configuration of Mikrotik switches. Onward ports on the switches are bonded using LACP. VIP (WAN) | ------------------------- | | | | ------------ pfSync ------------ | Firewall 1 | <---------> | Firew