nanog mailing list archives

Re: Comcast contact sought

From: "Livingood, Jason via NANOG" <nanog () nanog org>
Date: Mon, 25 Sep 2023 13:14:00 +0000

I have been trying to assist someone with a business connection that runs a server farm.  Recently the business cable 
modem started to short-stop port 53 for UDP and TCP.  Apparently, a transparent DNS proxy somehow got activated and 
all outbound traffic to any IPv4 or IPv6 address is intercepted and handled by the modem – or not handled.


Sounds like the person you helped turned on Security Edge. They can turn it off too at 
https://business.comcast.com/support/article/internet/securityedge-manage-settings.

Jason

Current thread:

Comcast contact sought Al Whaley (Sep 24)
- Re: Comcast contact sought Aaron de Bruyn via NANOG (Sep 24)
  - Re: Comcast contact sought Evan Moyer (Sep 24)
- Re: Comcast contact sought Livingood, Jason via NANOG (Sep 25)
  - Re: Comcast contact sought TJ Trout (Sep 25)