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Technicolor TC 4400 CMT Password Problem

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Technicolor TC 4400 CMT Password Problem

I hadn't checked my line levels for several months, so I went to log in to my Comcast provided modem at 192.168.100.1 using the defaults.  I first received a hacking message from my browser and when I bypassed the warning (which might have been stupid, although it was just the defaults)  the  username and password no longer worked.  I did a hard reset and still can't get in to see my levels. I was wondering if anyone else had ever experienced this problem and how they resolved it.