UAB IT moving to default-deny on network

Default Deny 02

UAB IT is preparing to close the gates on its network to protect sensitive data.

By the end of December, UAB IT will modify its border firewall posture to what is known as “default-deny,” a best practice for enterprise environments. What that means is that only approved network services will be allowed; everything else will be denied to help protect the network.

You can request to be transferred to the new default-deny posture early. UAB IT has a window open Saturday afternoon, Dec. 17, to move servers to default-deny. If you would like to get on the list, contact Enterprise Information Security staff at 975-0842 or via email at

UAB IT has been working with campus IT professionals behind the scenes for months to ensure a seamless transition.

Campus IT professionals can request a firewall rule change exception through a new form in the IT Service Portal.  

For more information about the change, please review our frequently asked questions.

The upcoming change does not impact any servers or services located within the UAB Health System network, as HSIS utilizes the default-deny firewall policy for their network segment.

All firewall requests from VLAN administrators should be entered by Dec. 29 if at all possible. 

Any VLAN administrators who have completed their requests and are ready to be flipped to a default-deny state can request that ahead of Dec. 29. UAB IT will schedule flipping to this default-deny state and troubleshoot any issues encountered with the campus IT staff. 

If you have any specific technical questions, feel free to contact the Enterprise Information Security staff at 975-0842 or via email at