PFSENSE Badly configured with 2 ADSL lines

[ebr15]

Good morning,
i am checking the configuration of my pfsense firewall as we have 2 adsl lines and it had to be configured to use the main line to navigate and the other as a backup in case the main line does not work.

It happened precisely because of a thunderstorm that the main line was broken for 1 day, but unfortunately the backup line did not work ...
I tried several times to contact who configured the firewall, but without success, so I'm trying to do it myself ...

My configuration is this:

The main line (a 100Mb / s) whose modem / router has this ip address: 192.168.178.1
The secondary line (a 20Mb / s) whose modem / router has this ip address: 192.168.0.1

Both connect to the pfsense firewall
the firewall ip is 192.168.1.5

In System / routing of pfsense I see that there is a WAN whose gateway is the main line IP, but there is no wan pointing to the second line IP.
Could this be the problem?

Thanks a lot to everyone.

[Rico]

Hi,
check out the great pfSense docs about Multi WAN:
https://docs.netgate.com/pfsense/en/latest/routing/multi-wan.html
https://www.netgate.com/resources/videos/multi-wan-on-pfsense-23.html
https://docs.netgate.com/pfsense/en/latest/routing/troubleshooting-multi-wan.html

-Rico