Security Basics mailing list archives

Cable Modems Need Open Ports?

From: "Mike Marcus" <mmarcus () nelsonpub com>
Date: Fri, 1 Nov 2002 12:52:57 -0500

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

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)