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[EOL/EOE] Certain Zone Names cannot be used if transparent mode firewall is managed by NSM.



Article ID: KB15652 KB Last Updated: 17 Oct 2020Version: 3.0
Note: A product listed in this article has either reached hardware End of Life (EOL) OR software End of Engineering (EOE).  Refer to End of Life Products & Milestones for the EOL, EOE, and End of Support (EOS) dates.
Certain transparent mode zones cannot be used if the firewall is managed by NSM.
When NSM manages a transparent mode firewall, custom zone names are managed in a specific manner.   This causes problems when certain custom zone names are used on the firewall.
When a firewall is in transparent mode, NSM manages custom zone names in a different way than when the device is in NAT/Route mode.

When in transparent mode, a custom zone name is created with the prepended "L2-" designation.    When those custom zones are brought under NSM management, NSM will strip off the L2- designation and manage the zone name without that L2- prefix.

For example, if the custom zone L2-Customers is created on a transparent mode firewall, and that firewall is brought under NSM management, the zone will appear in all NSM windows as "Customers" rather than "L2-Customers".

This creates a problem if the following custom zones are created on the firewall:
  • L2-Trust
  • L2-Untrust
  • L2-Mgt
  • L2-DMZ
NSM cannot manage these L2- zones separately from the L3 zone equivalents, Trust, Untrust, Mgt, DMZ.

Avoid using these zone names when naming custom L2- zones.
Modification History:
2020-10-17: Tagged article for EOL/EOE.
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