Re: Cable Modems Need Open Ports?

[Lance Reck <lance.reck () sun com>]

I'm not sure about Comcast, but AT&T does a MAC address pull or check of
the device attached to the cable modem. This check is done quite often
for some reason. I suspect the if the modem cant grab a MAC addr then
you will not get IP connectivity.

Lance

On Fri, 2002-11-01 at 10:52, Mike Marcus wrote:
> I was "playing" with setting on my router that is connected to a cable modem
> (Comcast is the ISP).  After blocking incoming (from wan) UDP and TCP ports
> 53 and 59 the router lost its external IP.  Any ideas?
>
> Thanks,
>
> Mike
-- 
Lance Reck,
Enterprise Monitoring and Management
Sun Microsystems IT Operations
voice: 303-272-9915 or X79916
page:  page-lance () skytel com

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