I downloaded the "Install a Windows Secondary Hub or install in a DMZ" from the UIM home page of 20.4.8.
While installing it for a tunnel client with custom installation or DMZ installation, the DMZ is showing 0kb during the installation, and it is not being installed.
Release :
UIM primary upgraded to 20.4 CU8
Tunnel Servers 20.4.8
This is a known defect in the UIM 20.4.CU8 Secondary HUB installer, where the DMZ is missing.
The issue has been resolved in the latest UIM release version 23.4.