I am trying to disable all the LAN ports on my RV 120W router to prevent someone from plugging in a rogue device and accessing our network. I want to only enable secure wireless on the router. I can disable all of the LAN ports through port management except port 1 which is grayed out. Is it possible to disable port 1? If so how? I really don't want to resort to MAC address filtering, etc. as that is too labor intensive. I don't understand why Port 1 is grayed out in port management and will not allow being disabled.
Thanks for your help.