(SOL15924) Description
Deletion of a network firewall rule using the BIG-IP Configuration utility may cause a change to all other rules that contain a specific port number.
Impact
The affected network firewall rule(s) with a specific port number configuration will no longer function as expected.
Symptoms
As a result of this issue, you may encounter the following symptom:
All other network firewall rules that contain a specific port number will change to Any.
For example:
Source
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