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DSL modem for DVR help

By Mamut0o1
Jul 22, 2010
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  1. Good Afternoon; I'm about to install a DVR on a motorola sbv6220 cable modem. Do i need a router to do port fowarding or would it be possible to point at the WAN IP and port? I have done this with DSL but I'm not sure if I need a router if this is a cable modem.

    thanks you all.
     
  2. jobeard

    jobeard TS Ambassador Posts: 9,096   +592

    As soon as the number of devices attached to the Modem {be it DSL, Cable, or carrier-pigeon}
    you need a NAT device to allow the ISP connection to be shared with the LAN side devices.

    IE: you need a router.
     
  3. Mamut0o1

    Mamut0o1 TS Rookie Topic Starter Posts: 45

    without the router it wont know where port ex: 8080 is? correct?
    I was trying to save money but I think there is no way out.
     
  4. jobeard

    jobeard TS Ambassador Posts: 9,096   +592

    Yes, you port forward (8080) to the lan address of the device.

    For that to work, the device needs a static ip address
    (dhcp might assign a different one depending upon which devices were seen first)
     

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