So I turned a router into a dumb switch, to use 2 pc's. Some people say to turn off the IPv4 firewall and some say leave it alone. The IPv6 firewall has only enable/disable and is disabled. More importantly I wonder if I've disabled DHCP (along w/WiFi) to turn this into a switch, does it matter if I leave NAT on? I figure how can this device do anything related to NAT if DHCP is turned off. Thanks, Mac
NAT (address translation) and DHCP (serving IP addresses to connected devices) are independent. Without DHCP, you need to assign static IP addresses. If you want a switch, just buy one. A four-port dumb switch doesn't cost much.
I see no problem leaving them running. But if you are curious, disable them and see what happens. If your network breaks, enable them again - but I don't see how it would break if just using the device as a switch.
