SQUID Configuration (Proxy Caching Server)

Step 1 : Install the packages for squid
[root#] yum install squid*

Step 2 :  Verify the installed packages
[root#]  rpmquery -qa | grep squid 
o/p:
squid-3.1.4-1.el6.i686

Step 3 : Get the IP Address of your machine
[root#] ifconfig
o/p :
192.168.2.108

Step 4 : Get the hostname of your machine
[root#] hostname
o/p :
localhost.localdomain

Step 5 :  Using GUI open the file /etc/squid/squid.conf
Go to Line Number 35 and write the following lines :
acl  deny_host  src 192.168.137.130
acl  allow_network  src 192.168.2.108
acl  web_deny  dstdomain  "/etc/squid/web_deny" 

acl   block_domain   dstdomain   .yahoo.com
http_access  deny   block_domain


Step 6 : Create web_deny file  in /etc/squid and write following :
www.yahoo.com


Step 7 :  Start the squid service
[root#] service squid start

Step 8 :  Stop the firewall
[root#] service iptables stop

Step 9 : ReStart the squid service
[root#]  service squid restart

Step 10 :  Make squid enable at boot
[root#]  chkconfig squid on

Testing the Squid Server

Step 1 :  Open the Browser Mozilla Firefox

Step 2 :  Clear All History and Cache

Step 3 : Using GUI Navigate to Edit - Preferences - Network -  Settings

3.1 In configure Proxies to access Internet
Select " Manual Proxy Configuration"

3.2 In HTTP Proxy text box : Write IP Address (192.168.2.108)

3.3  In Port No : Write 3128

3.4 Click OK

Step 4 : Open yahoo.com - You will see its blocked by Squid