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What if the two hosts have no link-level connection, and the router is the only thing connecting them? Would I need to have a fiddly rule in my router's firewal
by LegionMammal978 3y ago
What if the two hosts have no link-level connection, and the router is the only thing connecting them? Would I need to have a fiddly rule in my router's firewall allowing connections to and from Host B only if the other host has either the local range or the proper global range?
- Dagger2 3y agoDo you mean, say, one device that's on Ethernet and one that's on WiFi? Most people have their Ethernet and WiFi setups bridged so they count as the same link. If you actually mean two separate networks, where traffic has to be routed via the router... obviously there's a lot of ways of setting up firewall rules, and it depends on exactly what you want to do, but the simplest approach is to say "deny new connections coming in via the WAN interface". This will allow new connections going out the WAN interface, and also allow all connections between the two local networks in both directions, with no need to specify any IP ranges in the firewall at all.