What to do when pfSense WAN failover is not working as expected? Read the article to find out. As part of our pfSense Support Services, Bobcares provides answers to all of your questions.

Fixing the “pfSense WAN Failover is not Working” Issue

pfSense WAN failover issues can arise for a number of different causes. In pfSense, failover configuration often involves several WAN connections, therefore it’s important to carefully identify and fix problems. The steps to troubleshoot and fix WAN failover issues are as follows:

1. Initially, check to make sure the WAN interfaces are active and properly configured.

2. Then, make sure the setup of gateway groups is correct.

3. Verify that we have chosen the right gateway group to serve as the default gateway.

4. Examine each WAN gateway’s monitoring configurations. Also, make sure the monitoring IP addresses or techniques are reliable indicators of the state of the corresponding WAN connections.

5. Check the gateways’ status by selecting “Status” > “Gateways.” Check to see that the gateways are active as well as functioning as planned.

6. Make sure that failover traffic is not being blocked by the firewall rules. Also, make sure the LAN and WAN firewall rules are set up properly by checking them twice.

7. Confirm the DNS resolver or forwarder settings are set up to use the proper WAN interfaces for DNS requests if DNS is involved. DNS configuration problems may result in failover problems.

8. In order to keep track of traffic flow and identify any possible problems, use firewall logs and packet captures. Search for any odd patterns or mistakes.

9. Verify the gateways’ tier settings in the gateway group. Make sure that the setup is accurate for the desired failover behavior. In a group, lower-tier numbers are given precedence.

10. By physically cutting the wire from one of the WAN interfaces or simulating a failure, we can test the failover. If traffic goes through the other active WAN interface, watch out for it.

11. As upgrades may resolve known issues, make sure the pfSense setup is current with the newest packages.

12. Rarely, the pfSense router’s hardware faults could lead to failover troubles. Examine the condition of those parts.

13. Lastly, find out if there are any network outages or problems with the WAN connections from the ISPs.

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Conclusion

To sum up, our Support team went over the details to fix the “pfSense WAN failover is not working” issue.