A proxy server is a specific type of application server that routes HTTP requests to content servers that perform the work. Proxy servers can be classified according to the role that it plays in a system. This particular proxy server is classified as a reverse proxy server because its main function is to serve as the initial point of entry, after the firewall, for client requests into an enterprise.
Review the topic that describes how to select a front end for your WebSphere Application server topology. This topic helps you determine whether you should set up a Web server plug-in, a proxy server, or a secure proxy server to provide session affinity, failover support, and workload balancing for your WebSphere Application Server topology.
The proxy server for WebSphere
Application Server requires that you install the V6.0.2 update. Additionally,
you must augment the profiles that are associated with the deployment
manager and the nodes that are expected to host the proxy server to
contain the artifacts that you need to administer and manage the proxy
server feature.
The proxy server acts as a surrogate for content servers within the enterprise. As a surrogate, you can configure the proxy server with rules to route to and load balance the clusters of content servers. The proxy server is also capable of securing the transport, using Secure Sockets Layer (SSL), and the content using various authentication and authorization schemes. Another important feature is its capability to protect the identity of the content servers from the Web clients by using response transformations (URL rewriting). The proxy server can also improve performance by caching content locally and by protecting the content servers from surges in traffic.
The proxy server is available in the WebSphere
Application Server Network Deployment V6.0.2 offering and higher.
A proxy server configuration provides settings that control how a proxy server can provide services for the enterprise applications and their components. This section describes how to create and configure proxy servers in an existing application server environment.
Augmentation of
the deployment manager profile enables the management of the proxy
server feature in the administrative console. You must stop the deployment
manager prior to augmentation to update the deployment manager profile.
The augmentProxyServer script that is provided with WebSphere Application
Server must be run on the deployment manager as well as all nodes
that host a proxy server. If you need to remove the feature from your
deployment, you can unaugment the proxy server feature from the profiles
that are previously augmented. Unaugmenting also removes any proxy
servers that are configured in the cell. You must stop the deployment
manager prior to unaugmentation. To augment or unaugment an existing
profile, use the following scripts from the bin directory
of WebSphere Application Server.
HMGR0149E: An attempt by another process to connect to this process via the core group transport has been rejected. The connecting process provided a source core group name of network1server1a.com9353network2server2a.com9353, a target of <null> a member name of 10.42.45.18:9353 and an IP address of /10.42.45.18.then your application requires security between the Web modules and Enterprise JavaBeans (EJB) modules. You must configure WebSphere Application Security by doing the following:
See the Configuring Lightweight Third Party Authentication keys topic for more information.
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