Slightly offtopic - but relevant for people running the Edge components in a clustered Portal or Workplace environment !
Reverse Proxy Administration of the WebSphere Caching Proxy
This technote describes how to gain access to the Caching Proxy administration GUI when the proxy server is configured as a reverse proxy server.
For related information about this topic, refer to the following IBM Redbooks publication:
IBM WebSphere V5 Edge of Network Patterns, SG24-6896-00
Introduction
This technote describes how to gain access to the Caching Proxy administration GUI when the proxy server is configured as a reverse proxy server.
The Caching Proxy component of WebSphere Application Server Edge Components V6 is both a caching proxy server and a content filter. It can be used to provide a robust, efficient proxy server with an optional cache. The caching proxy server can be configured to operate as:
* A forward proxy server for clients
* A transparent proxy server for clients
* A reverse proxy server for other back-end servers
The Caching Proxy is supported on AIX, HP-UX, Linux (Intel, z/390 zSeries, iSeries, or pSeries), Solaris, Windows 2000 Server, and Windows 2003 Server. For the purposes of this technote, the Caching Proxy is installed on a Windows 2000 Server system.
The Caching Proxy, when configured as a reverse proxy server, acts on behalf of one or many back-end servers. A reverse caching proxy intercepts client requests arriving from the Internet, forwards them to the appropriate back-end server content hosts, caches the returned data (if requested to), and delivers that data to clients across the Internet. The cached data can satisfy a request for the same pages at a later time. In this manner, a reverse proxy can reduce the amount of traffic and processing that a back-end server must perform to satisfy duplicate Internet requests for data, while at the same time improving the response time for those requests.
The Caching Proxy is administered using the browser-based Configuration and Administration forms GUI supplied with the Caching Proxy. These forms run CGI programs that edit the proxy server configuration file, ibmproxy.conf.
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