Simple step by step guide to install and configure SQUID proxy server in RHEL/Centos/Oracle linux (5/6/7)

In this tutorial we learn what is SQUID proxy server and how to configure SQUID proxy server in linux .

What is SQUID Proxy

SQUID is most popular proxy server in linux operating system which is used to filter the web traffic and acts as cache server to boost up speed of web server.

Install SQUID proxy server in RHEL/Centos/Oracle linux

To install the SQUID proxy server we need to install squid package in the linux system . to install this package we execute the below command.

[root@localhost ~]# yum install squid

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Package Arch Version

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Installing:

squid x86_64 7:3.1.23-24.el6

Installing for dependencies:

libtool-ltdl x86_64 2.2.6-15.5.el6

perl x86_64 4:5.10.1-144.el6

perl-DBI x86_64 1.609-4.el6

perl-Module-Pluggable x86_64 1:3.90-144.el6

perl-Pod-Escapes x86_64 1:1.04-144.el6

perl-Pod-Simple x86_64 1:3.13-144.el6

perl-libs x86_64 4:5.10.1-144.el6

perl-version x86_64 3:0.77-144.el6

Transaction Summary

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Install 9 Package(s)

How to change SQUID port

By default squid is running on pot 3128. If we want to change the squid port we need to open squid configuration file “/etc/squid/squid.conf” and change the http_port parameter .

Suppose we want to change the port 8080 instead of 3128 we need to change the value of http_port to 8080.

Allow http access for all using SQUID proxy

To allow http access for all using squid we need to change the below line.

http_access allow all

instead of

http_access deny all

Block the specific website using SQUID proxy

To block the specific website using squid proxy we need to add the below lines into the squid configuration file. suppose we want to block google.com using SQUID proxy we add following lines.

acl blocksite dstdomain www.google.com

http_access deny blocksite

Simple step by step guide to install and configure SQUID proxy server in RHEL/Centos/Oracle linux (5/6/7)

Block large no of websites using SQUID proxy

To block large no of website we need to create a file called blocksitelist under the directory “/etc/squid” and add all block website list into this file and add the following line into the squid config file.

#cd /etc/squid

#echo google.com yahoo.com facebook.com >> blocksitelist

#vi /etc/squid/squid.conf

acl blocksitelist dstdomain “/etc/squid/blocksitelist”

http_access deny blocksitelist

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Simple step by step guide to install and configure SQUID proxy server in RHEL/Centos/Oracle linux (5/6/7)