Technical data

Firewall Considerations: Opening the Right Ports
Networking 4-3
network resources. It combines Lightweight Directory Access Protocol (LDAP) Version
3 with the high performance, scalability, robustness, and availability of Oracle9i.
For more information on working with LDAP and Oracle Internet Directory, see
Oracle Internet Directory Administrator’s Guide. Make sure your application
developers read Oracle Internet Directory Application Developer’s Guide.
4.1.4 Enterprise Manager Server Control
Oracle Enterprise Manager Application Server Control enables Web site administrators
to configure Oracle Application Server instances, to monitor and optimize them for
performance and scalability, and to respond proactively to problem conditions.
The Application Server Control allows administrators to stop and restart Oracle
Application Server instances from the Oracle Application Server Instance Home Page.
They can also modify the configuration settings based on performance statistics
collected to improve performance and scalability or to address any problems.The
Application Server Control provides performance metrics for each component in both
tabular and chart formats so you can identify problem conditions at a glance. When
you drill down on an Oracle Application Server, you can view the status, historical
uptime statistics, and the current performance and availability for each Oracle
Application Server instance.
Metrics vary from one component type to another, but typical metrics include:
■ Up/down status
■ Memory usage
■ Error rate
■ Start time
■ Number of connections
4.2 Firewall Considerations: Opening the Right Ports
In a distributed installation of Oracle Application Server, such as an Enterprise
Topology, you’ll need to configure ports in the firewalls to allow Oracle Application
Server services to work correctly. Specifically, you’ll need to allow for:
■ HTTP and HTTPS to be open for users (clients) to contact the web server
■ Application servers (middle tier installations) to communicate with the
Infrastructure (SQL*Net, ORCL-LDAP, ORCL-LDAP-SSL, ONS, OPMN)
■ Application servers to databases, SQL*Net, and LDAP protocols if necessary
■ Application servers to use ONS outbound
■ Port 1814 for Enterprise Manager (for Infrastructure and middle tier installations)
and for any other tools and services, such as LDAP ports.
■ AJP to be opened for mod_oc4j to OC4J communications
Oracle Enterprise Manager Application Server Control is the preferred way to track
port information if default ports have been changed. For default port information refer
Note: Default ports may differ between operating systems
(Solaris, Windows, and Linux). Use Application Server Control
to discover and manage ports.