Firewall Connections - Unknown IP Address

[dareru]

I have a load balancing Mikrotik Router. One modem is the LHG with a LAN IP of 192.168.2.1. What I wonder about IP firewall connections of my LHG is that I see IPs coming from other WAN ports of the load balancing router like 192.168.1.xxx 192.168.3.xxx and 192.168.4.xxx. What is the explanation here?

[mutluit]

I have a load balancing Mikrotik Router. One modem is the LHG with a LAN IP of 192.168.2.1. What I wonder about IP firewall connections of my LHG is that I see IPs coming from other WAN ports of the load balancing router like 192.168.1.xxx 192.168.3.xxx and 192.168.4.xxx. What is the explanation here?

Are you sure about the source being WAN?
And: which firewall chain? input or forward? And how much traffic? Substantial or just a few packets?
Otherwise: that’s the very job of a load balancer, isn’t it?
Maybe a misconfiguration on the LB.