That depends on your support IT and network admins, but yes, you can open ports if you know which ones are important for ClearCase.
See "About Firewalls and ClearCase"
IBM Rational ClearCase is known to operate correctly through firewalls in internal networks if the following conditions are met:
- Port 371 (UDP and TCP) is passed through to any/all ClearCase server hosts from the allowed hosts.
- All ports over 1024 (UDP and TCP) are open from the allowed ClearCase client hosts to needed ClearCase server hosts.
- On Windows with McAfee Antivirus (access protection), also open port 6666 (IRC).
Cleartool.exe
may use that port to acquire a license.
If you do not open that port, the user command will fail with error: Unable to contact albd_server on host
.