Security Basics mailing list archives
Re: Cable Modems Need Open Ports?
From: "Case CCC" <case_list () operamail com>
Date: Sat, 02 Nov 2002 13:45:54 +0800
I believe port 53 is required to resolve the namespaces, like yahho.com to 64.58.79.x... Also, port 59 is used by new file to talk back and forth to the server that keeps the token lists. I would recommend doing a google search with 'TCP/IP Ports 53 59' Try blocking one or the other see what happens, trial and error is a harsh mistress but a great teacher. external IP i assume you mean the WAN side on you router/modem NIC. case console_cowboy
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
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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)