Equipment (Modems,Gateways)
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Official Employee

Ports Blocked by Comcast?

Customers sometimes ask:

 

“Why does Comcast block certain ports on my Gateway?”

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1 REPLY 1
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Community Manager
Community Manager

Re: Ports Blocked by Comcast?

For the protection of our network and our customers, Comcast blocks certain ports to protect against common viruses and worms, malicious intruders and other security risks. For a complete list of blocked ports, along with an explanation on how and why they are blocked, check out the “Ports blocked by Business Class Internet” article at our Help & Support website.

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