We use the MT as our firewall, and a nat rule that sends all 80/443 traffic on an external IP to a NGINX load balancer on our internal network.
This works well.
BUT - what I want to look at is adding a failover rule, maybe with a script?, If the internal Load Balancer, lets say x.x.1.2 goes down, then the firewall rule will automatically reroute traffic to x.x.1.3.
I could set up a monitor machine that pings the LB updates the rule on the MT, or the MT just always LB's that traffic to both LB's?
How would you do this?