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    Wireguard VPN client can access pfSense active server but can’t access pfSense backup server

    Scheduled Pinned Locked Moved Firewalling
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    • E
      edgarquadros
      last edited by

      Hello friends!

      I have a scenario with pfSence CE 2.7.2 with HA and started using Wireguard VPN, which is configured in the active pfSense server. The Wireguard VPN clients are working fine, accessing all networks/vlans that I put in the client configuration, except for one problem: I simply can’t reach the pfSense backup server, which is located in the same subnet of the master pfSense server.
      When I check both active and backup pfSense logs, I can see in the active logs, that the traffic is allowed from the Wireguard client IP address to the pfSense backup IP address, but in the backup logs, I can see the traffic is being blocked!
      This is strange because as I have HA active, all Rules are being synchronized between 2 servers, so, the same rule that allows traffic from the Wireguard subnet to the firewall mgmt subnet that exists in the active server, exists in the backup server too.
      For information:

      pfSense Master IP: 10.48.255.253/24
      pfSense Backup IP: 10.48.255.252/24
      pfSense CARP IP: 10.48.255.254/24
      Wireguard subnet: 10.148.148.0/24

      From Wireguard clients I can reach 10.48.255.253 and 10.48.255.254, but I can’t reach 10.48.255.252.

      Rules on Wireguard:
      From 10.148.148.0/24 to all subnets = allow
      Rules on pfSense MGMT:
      From 10.48.255.0/24 to 10.148.148.0/24 = allow

      Thanks in advance for some help!

      BR,
      Edgar

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      • V
        viragomann @edgarquadros
        last edited by

        @edgarquadros
        Troubleshooting VPN Connectivity to a High Availability Secondary Node

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