Yea there are people on that are not saved mac address . We have mac filter on so idk how there getting on. Theres a password to loggin router but no password to access wifi . Never was , just mac filter and it always worked till recently musthave changed when we got the new router , but mac filter is still set to on, so i have no idea how there getting on without having there mac address added. What could cause this? Maybe because its dual band router ? Our old router wasnt it was just the 615