Software -Server/Proxy Network

Securing and Optimizing Linux: RedHat Edition -A Hands on Guide
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# Chapter 28. Software -Server/Proxy Network

Proxy-servers, with their capability to save bandwidth, improve security, and increase web-surfing speed are becoming more popular than ever. At this time only a few proxy-server programs are available. These proxy-servers have two main drawbacks:

They are commercial.
They don't support ICP, ICP is used to exchange hints about the existence of URLs in neighbor caches .

Squid is the best choice for a proxy-cache server since it is robust, free, and can use ICP features.

Derived from the `cached` software from the ARPA-funded Harvest research project, developed at the National Laboratory for Applied Network Research and funded by the National Science Foundation, Squid offers high-performance caching of web clients, and also supports FTP, Gopher, and HTTP data objects. It stores hot objects in RAM, maintains a robust database of objects on disk, has a complex access control mechanism, and supports the SSL protocol for proxying secure connections. In addition, it can be hierarchically linked to other Squid-based proxy servers for streamlined caching of pages.

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