Thanks. That's a lot of suggestions. I didn't know about changing the LAN IP or the DHCP. I'll think about that.
I already changed the base name, base password, and the network password. The passwords are 20-character generated by 1Password which I use for all my passwords. I mentioned before that I changed the DNS numbers to OpenDNS. WPS is disabled under prefs, though the router's WPS light is always on. Guest access is disabled. I could configure the settings so that only the devices I choose can log in to the network. At the moment, a Dell, an ipad, and a printer. I think I have to use the MAC addresses for that. I haven't done it before, but it should be easy.
