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Cable Modem setup

By bassmastermike ·
Does anyone know how to setup a General Instruments SB3100 cable modem I need to open some ports that are blocked by default ?

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Cable Modem setup

by timwalsh In reply to Cable Modem setup

There is generally no user setup required for any cable modem. What leads you to believe it's the modem? It is more likely your ISP or a Cable/DSL router (if there is one installed) that is blocking any ports. Nothing on the data sheet for your modem (found at would suggest any port blocking.

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