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12.2 E-Business Suite Technology Stack DMZ Firewall Configuration Between Internal Nodes And How To Identify Which Ports To Open Including DB port, SSH port, WLS port, etc (Doc ID 2324752.1)

Last updated on APRIL 20, 2023

Applies to:

Oracle E-Business Suite Technology Stack - Version 12.2.4 to 12.2.6 [Release 12.2]
Information in this document applies to any platform.


E-Business Suite 12.2 Applications Technology Stack, Advanced Configurations Demilitarized Zone (DMZ) related issues


When using https servers behind a proxy server in a 12.2 DMZ configuration, the instance calls Web services on the first apps node but no web services are called on the second applications tier node.

For example if the the configuration  includes the following footprint:

1 Database tier in "Secure" zone
1 Concurrent Manage server in "Secure" Zone
1 Admin server in "Less Secure" zone which is behind a firewall.

In summary there is a firewall between the internal only nodes, eg. the Secure and Less Secure internal zones.

All tiers are Internal and no external connections exist.

Provide a reference of which ports should be opened in the firewall for DMZ configurations with multiple nodes (DB port, ssh port, WLS port).


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