Easiest / Best way to track traffic to make sure it is flowing as needed through the correct WAN, in particular for a RED attached to that WAN?

Hello all,

Is there an easy way to ensure that traffic/routing rules are working through the correct WAN network, in particular when involving a RED device? Doing a tracert from an internal client to a server behind a RED will only show the two hops: UTM internal IP ==> RED internal IP (as it should) so that is out of the question.

I've setup some new multipath rules and changed one of our RED's UTM Host IP to our WAN2 IP and now more traffic appears to be going through WAN 2, than it should. This is the only RED assigned to that WAN.  If I do a "what's my IP" from my own desktop it even shows as the WAN 2 IP, when it should show WAN 1's IP.

If I set WAN 2 as Standby in Uplink Balancing does that prevent/disable any rules from using WAN 2?

Is there a "traffic" log for each RED?

Multipath:

RED Config