Default Route over Private Network

[footprintsdividing]

Hi all,

I have a bit of a tricky setup. I have two private networks that are both using private subnets (details below). What I am calling my WAN is my home network and my LAN is where my servers are going to reside in.

Servers on my LAN can access the internet when I configure the default gateway on the WAN interface but then from my WAN I am unable to connect to the LAN network. When I leave the default gateway to auto-detect I am able to access my LAN from the WAN but LAN servers can't connect to the internet.

Network Details
- WAN
  - 192.168.0.0/24
  - OPNSense IP: 192.168.0.10
  - Default Gateway: 192.168.0.254
  - Managed by separate router
- LAN
   - 10.10.10.0/24
   - Default Gateway && OPNSense IP: 10.10.10.1
   - OPNSense Router

I have attached screenshots of both interface configurations with this post.

Would someone be familiar with how to proceed to resolve the issue?

[footprintsdividing]

I have continued to troubleshoot the issue.

It appears that when a packet is bound for external access it does not get sent though the WAN interface. Using Services -> Packet Capture I can see my ICMP packets being sent to the LAN Default Gateway and being let out the Firewall but the packet does not get captured on my WAN Interface.

Client -> LAN Interface (Packet Captured) -> WAN Firewall (Passed) -> WAN Interface (Not Captured) -> Home Router (Not Seen)