try hosting your server on port 10309 (edit config file serverSettings.lua line ["port"] = "10309",) and forward that to your hosting PC IP on port 10309
so 10309 to 10309 on 192.168.1.174 is the rule
you might want to remove the DCSpc rule as you do NOT need this to play online, as your connection will be out bound to the server PC on the internet