I have a router running asuswrt-merlin so I have access to ssh/iptable rules. Is there a way to make a device not able to access an external network or only allow the IP to connect to another IP e.g. 192.168.0.2 -> 192.168.0.3?
I don't have a router/switch with custom vlan capability, so I was wondering is there another way to do this?
It's like openwrt or freshtomato firmware but specifically for asus routers. Do you happen to know how to do this? I've tried normal rules, but that seems to only apply the router itself rather than the network traffic routing through it.