Cable Modem Web Interface

My internet connection stopped working today, which lead me to an interesting discovery. Generally when my internet stops working just I renew my DHCP lease and it starts working again.

But this time, when I renewed my DHCP I got a private Class C IP (192.168.100.41) and no gateway or DNS servers. This was strange, so I tried pinging 192.168.100.1, which got a response! Interesting, what else is running here? I browsed to http://192.168.100.1/ and found:

Cable Modem Web Interface

It looks like I connected to a web server in our cable modem. Mostly the site just had information about the cable modem. However, under configuration I found, a button to reset factory defaults (I didn’t touch this), and a button to restart. I tried pressing the restart button. When the modem restarted, I renewed my DHCP lease restoring my internet connection.

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