|That would seem likely. I'd contact your ISP at this point.|
Ummm...........just out of curiosity...........why do you shut your modem off?
If you have a SOHO Router between it and your LAN, that will protect your LAN from intrusion. Or, if you're like me, your ISP gave you a combo unit that is a modem, SOHO Router and wireless access point all in one. In my case, my modem is it's own protection (mind you, I still have a UNIX based firewall/router between that unit and the rest of my LAN, but I am a computer geek by trade right......lol)
It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.