Security Basics mailing list archives
Re: Cable Modems Need Open Ports?
From: Lance Reck <lance.reck () sun com>
Date: 04 Nov 2002 08:31:43 -0700
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 CONFIDENTIALITY NOTICE This e-mail may contain confidential and privileged material for the sole use of the intended recipient. Any review or distribution by others is strictly prohibited. If you are not the intended recipient please contact the sender and delete all copies.
Current thread:
- Cable Modems Need Open Ports? Mike Marcus (Nov 01)
- RE: Cable Modems Need Open Ports? Dallas Hindle (Nov 04)
- Re: Cable Modems Need Open Ports? Lance Reck (Nov 04)
- <Possible follow-ups>
- Re: Cable Modems Need Open Ports? Case CCC (Nov 04)
- RE: Cable Modems Need Open Ports? Raoul Armfield (Nov 08)
- RE: Cable Modems Need Open Ports? Mike Marcus (Nov 08)
- RE: Cable Modems Need Open Ports? Raoul Armfield (Nov 08)