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1 Message

Thu, Sep 21, 2017 4:34 PM

Firewall Pinholes and Port Forwarding

just recently had business class U-Verse 50/10 installed.

I have NOT been able to configure my AT&T Pace 5268AC modem/router to allow port forwarding in the following manner:


Inside the LAN: Need the following IP address to receive traffic on these ports:

Static IP:, ports 5000-5001 (NAS server)

Static IP:, port 80 (http)

Static IP:, port 5900 (VNC)

Static IP:, port 21 (FTP)


I have a block of 5 static IP's as describe by AT&T installation tech: 

CIDR block:

Block size: 8 (5 usable)

Usable IP range: to

Subnet mask:

Preferred DNS server:

Alternate DNS server:


NO help from AT&T tech support can configure this network to allow this unsolicited traffic to pass to these internal, behind the firewall servers.

I have been on the telephone with AT&T tech support for two days, one day for 4 hours. NO person is able to explain, or fix this with remote access to my PC.

I have Googled this, and followed the tips found in the search. -- NO HELP!

Additionally, I signed up for PAID tech support for $15/month. NO person in this support group can either remotely control my PC, and make this work, or give me advice towards a solution. I find this incredible that this should be so hard, as this is a common request by many business class customers who are running servers behind the firewall in their local business.



1. What is the IP address I put into my Domain Name Service? I have entered: (Actually, I have tried all five static IP's, including the public IP of, all with NO help)?

2. Why is this so difficult for a common solution that any off-the-shelf router/firewall can perform with a few minutes. Surely, AT&T has seen this issue and hopefully has an answer?

3. What do I need to do to get this common function to work within the AT&T U-Verse network?




Brand User



7.1K Messages

2 years ago

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