If you don't have a static IP.
All you have to do is unplug your Comcast modem, your VOIP box (If you have one) and your router (Once again, if you got one)
Basically anything connected to your network.
Then turn off your computer.
Wait a minute and turn on your modem, wait a minute then turn on the next thing in your network, wait a minute and repeat. Then after all is done turn on your PC.
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