Routing Issue from Blue to Green


I am facing an issue with routing, I am trying to add a route to access Green Network from the Blue Network host. I have added a route to the Firewall to allow all traffic coming from the specific Blue Network host. The host accesses all clients except the Gateway.

Green Network =
Blue Network =

The Nethserver IP address is

From Green Network I can access the Nethserver using or

From the Blue Network I am not able to Ping and access Nethsever using

Can anyone please help me to find out a way how to access Nethserver using Blue Guest Network?

By adding local rules, I was able to access the gateway from Blue Guest Network.