old-www/LDP/solrhe/Securing-Optimizing-Linux-R.../netproxy-squid.html

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>Securing and Optimizing Linux: RedHat Edition -A Hands on Guide</TH
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>Chapter 28. Software -Server/Proxy Network</A
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><DIV
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><DL
><DT
><B
>Table of Contents</B
></DT
><DT
>28.1. <A
HREF="chap28sec227.html"
>Linux Squid Proxy Server</A
></DT
><DT
>28.2. <A
HREF="chap28sec228.html"
>Configure and Optimize</A
></DT
><DT
>28.3. <A
HREF="gnumaloc.html"
>Improve performance Using GNU malloc library</A
></DT
><DT
>28.4. <A
HREF="chap28sec229.html"
>Compile and Optimize</A
></DT
><DT
>28.5. <A
HREF="chap28sec230.html"
>Configurations</A
></DT
><DT
>28.6. <A
HREF="chap28sec231.html"
>Configure the <TT
CLASS="filename"
>/etc/squid/squid.conf</TT
> file -in <TT
CLASS="literal"
>httpd-accelerator mode</TT
></A
></DT
><DT
>28.7. <A
HREF="chap28sec232.html"
>Configure of the <TT
CLASS="filename"
>/etc/squid/squid.conf</TT
> file -/proxy-caching mode</A
></DT
><DT
>28.8. <A
HREF="chap28sec233.html"
>Configure the <TT
CLASS="filename"
>/etc/rc.d/init.d/squid</TT
> script file -/all configurations</A
></DT
><DT
>28.9. <A
HREF="chap28sec234.html"
>Configure the <TT
CLASS="filename"
>/etc/logrotate.d/squid</TT
> file</A
></DT
><DT
>28.10. <A
HREF="chap28sec235.html"
>Optimizing Squid</A
></DT
><DT
>28.11. <A
HREF="chap28sec236.html"
>Netscape Proxies Configuration</A
></DT
><DT
>28.12. <A
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>Installed files</A
></DT
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><P
>&#13; 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:
<P
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>&#13; They are commercial.
</TD
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><TR
><TD
>&#13; They don't support <SPAN
CLASS="acronym"
>ICP</SPAN
>, <EM
><SPAN
CLASS="acronym"
>ICP</SPAN
> is used to exchange hints about the existence of URLs in neighbor caches</EM
> .
</TD
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></TBODY
></TABLE
><P
></P
>
Squid is the best choice for a proxy-cache server since it is robust, free, and can use <SPAN
CLASS="acronym"
>ICP</SPAN
> features.
</P
><P
>&#13; Derived from the <TT
CLASS="literal"
>cached</TT
> software from the <SPAN
CLASS="acronym"
>ARPA</SPAN
>-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 <SPAN
CLASS="acronym"
>FTP</SPAN
>, Gopher, and <SPAN
CLASS="acronym"
>HTTP</SPAN
> data objects. It stores hot objects in <SPAN
CLASS="acronym"
>RAM</SPAN
>, maintains a robust database of objects on disk, has
a complex access control mechanism, and supports the <SPAN
CLASS="acronym"
>SSL</SPAN
> 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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