Environment
Novell ZENworks 10 Configuration Management - 10.0 Imaging
Novell ZENworks 10 Configuration Management with Support Pack 1 - 10.1 Imaging
Novell ZENworks 10 Configuration Management with Support Pack 2 - 10.2 Imaging
Novell ZENworks 10 Configuration Management with Support Pack 3 - 10.3 Imaging
Situation
PXE fails
Preboot imaging fails
Boot up bypasses PXE menu
This will appear as if there was no connection to the server because communication is blocked.
Resolution
From Novell Documentation
Turn off firewall on the ZCM server.
Remove network firewalls and network filters.
Workaround: use BootCD, this will make imaging process through designated ports.
Additional Information
From Documentation Section 2.4.2: IMPORTANT: If the switch is acting as a firewall and limiting the type of traffic on the network, understand that novell-tftp and novell-zmgprebootpolicy are not firewall or network filter friendly. You should not attempt to run these services or daemons through a firewall. If users need to pass preboot work through a firewall, then all Preboot Services work needs to be on the outside and merely reference a Web service inside the firewall.
From Documentation Section 2.4.3: PXE devices make their initial requests to novell-tftp and novell-zmgprebootpolicy on the standard ports, the remainder of the transactions can occur on any available port. For this reason, Imaging Servers cannot be separated from their clients by a firewall or network filter.