dslreports logo
spacer Home Reviews Speed Test Tools News Forums Info About Join  

All FAQs → Comcast High Speed Internet FAQ → 3.1 Advanced Topics

Expand Open navigator

What ports does Comcast block?

Comcast currently blocks ports 25, 68, 135-139, 445, 520, and 1080.

It is questionable whether some of these ports are presently blocked.
See this topic: Blocked ports

Also, see this Comcast FAQ link.

*This FAQ is based on user knowledge from a volunteer core of BroadbandReports' members. This FAQ in no way constitutes official information from Comcast or any of its affiliates.


Feedback received on this FAQ entry:
  • Comcast also redirects UDP port 53 to their own DNS servers.

    2012-04-14 19:17:29



Expand got feedback?

by Big_D7 See Profile edited by Johkal See Profile
last modified: 2010-04-08 18:48:22