System information
Transparent Proxy
Proxy Server 4.0 supports transparent proxy for HTTP/1.1 connections. Transparent proxying
involves intercepting and processing web requests by using the proxy server, without the
knowledge or control of clients. For example, a router for a local network is congured to
redirect incoming TCP connections to the local port, in which the proxy server is active.
Add the following directive to the proxy server default object in the obj.conf le:
NameTrans fn="host-map"
This conguration enables the proxy server to use the HTTP Host: header of incoming
requests to identify and redirect the request to the target remote server.
Note – Transparent proxy servers that decide connections based on the HTTP Host: headers are
vulnerable to fake HTTP Host: headers forged through the active content. Therefore, suitable
ACL congurations must be implemented to prevent connection to web sites that might host
malicious content.
URL Mapping
URL Mapping has been implemented in Proxy Server 4.0.8. It enables the Proxy Server to act as
a reverse proxy. This feature enables Proxy Server to provide a single front-end hostname for
back-end application servers. Based on a requester's URI, access is provided to back-end
servers.
For more information about URL Mapping, see
“Reverse Proxy Scenario” in Sun Java System
Web Proxy Server 4.0.11 Conguration File Reference
.
For information about Server Application Functions (SAFs) used in URL Mapping, see
“Server
Application Functions (SAFs)” in Sun Java System Web Proxy Server 4.0.11 Conguration File
Reference
.
Registration with Sun Connection
You can use the Admin Server to register the Web Proxy Server with Sun Connection. Click the
Register with Sun Connection button, a client.jnlp application opens up. Follow the wizard
to complete the registration.
By registering the Web Proxy Server with Sun Connection you receive the following benets:
■
Patch information and bug updates
■
News and events
Enhancements in Sun Java System Web Proxy Ser ver Releases
Sun Java System Web Proxy Server 4.0.11 Release Notes • July 20096