IPSec/L2TP VPN Filtered / Blocked. I am done playing this game!

I am an Xfinity customer paying for your highest-tier residential internet plan, with unlimited and uncapped usage outside of the ports Xfinity publicly lists as blocked. According to Xfinity’s own documentation, ports 500, 4500, and 1701 are NOT listed as blocked or restricted.

Despite this, all three ports required for IPSec/L2TP VPN operation appear to be filtered or blocked when accessed externally. My router is properly configured with correct port-forwarding and passthrough settings, and my modem is operating with a public IP address (no double-NAT). Independent external port scans from multiple testing services show the ports as consistently blocked/filtered. VPN negotiation fails before authentication can occur.

This behavior prevents me from using a private, self-hosted VPN server for work, secure remote access, and encrypted communication all lawful uses of the internet!

Under FCC Transparency Rules (47 CFR §8.3) and the principles established in FCC 08-183 (Comcast Network Management Practices Order), ISPs may not unreasonably interfere with consumer access to lawful internet applications or services, nor may they block or throttle services without proper public disclosure. Because ports 500, 4500, and 1701 are not listed on Xfinity’s official “blocked ports” page, any filtering of these ports would violate the transparency and disclosure obligations imposed on broadband providers.

I am formally requesting:

1. Unfiltered access to UDP ports 500, 4500, and 1701, OR

2. A written explanation for why these ports are being blocked, filtered, or interfered with, AND

3. Confirmation that my service is not subject to any undisclosed restrictions, shaping policies, or filtering beyond the ports Xfinity officially lists.

I pay for premium internet service and expect full access to lawful traffic, including VPN protocols. If this issue is not resolved promptly, I will escalate through the FCC Consumer Complaint Center and other regulatory and legal channels.

Please Do Not reach out to me with jabs to my intellect. my appliances are enterprise grade. This is not rocket-science and absolutely everything was provisioned correctly and intentionally. I am an expert at solving highly complex technical issues, and there is nothing complex whatsoever about setting up a VPN. Any fool could take the appliances to another environment and see that they work flawlessly!

That leaves just one element = Xfinity

Problem solved. Now I want a resolution and what was requested, nothing more!  

 

Thank you for your attention. Please provide a written response confirming restoration of unrestricted access to these ports.

Sincerely,

CoreyF