Traffic from Lan to Opt1

[under01]

What is the way to make Lan Clients communicate with Opt1 clients?

WAN - LAN (192.168.10.1/16)
        \ OPT1(192.168.2.249/24)

This is my netowrk setup.
I can communicate from Opt1 with Lan clients (http, windows shares, etc) and access the internet.
But I can't access any Opt1 client from Lan. I can just access the internet.
My firewalls are allow all on all interfaces

[GruensFroeschli]

Your LAN is 192.168.10.0/16 which includes 192.168.2.0/24