Red Hat NETSCAPE DIRECTORY SERVER 6.01 - DEPLOYMENT Installation Guide Page 118

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Pramati Server 3.5 Security Guide
Hosting Scenarios
Some of the typical client-server hosting scenarios are:
All installations on the host machine
Nothing exists in the De-militarized Zone (DMZ) behind the firewall. Pramati Server is on the host
machine. Pramati Web Container handles all HTTP requests.
Pramati Web Container in DMZ
Pramati Web Container and EJB Container are configured in two different zones: the Web
Container is in the DMZ and handles all the HTTP requests. The EJB Container is on the host
machine and serves EJBs.
Third-party HTTP server configured with Pramati Server
An existing HTTP server is configured with Pramati Server. While Pramati Server serves EJBs and
JSP pages (dynamic content), HTTP server serves static content. In this scenario, Administrators
must install Pramati WebGate, the HTTP server plug-in facility, for Pramati Server to work with
other HTTP servers.
Third-party HTTP server and Servlet engine
HTTP server with Servlet engine serves HTTP requests from the DMZ, while Pramati EJB
Container serves EJBs from the host machine. In this scenario, administrators must place Pramati
Server-specific
client.jar in the classpath of the Servlet engine.
Hosting applications on multiple independent Servers is the simplest of the Server configurations.
Each Server is installed on the local host or a remote host. In this configuration, you deploy the
complete application on each Server machine. To do this, you use the Deploy Tool in the Console
to repeatedly deploy the application on each running Server.
When you deploy an application this way, the session is neither backed up nor shared between two
or more Servers. This implies that load balancing and fail over is not available to the application.
To deploy applications across multiple Pramati Servers while sharing a common external HTTP
server, install Pramati WebGate, the HTTP Server plugin that ships with the Server.
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