Squid is installed by default when you install Apache.

To configure squid.conf file you need to modify three lines:

1. visible_hostname
2. #acl our_networks src 192.168.1.0/24 192.168.2.0/24
3. #http_access allow our_networks

To setup a squid proxy server on the computer named server2 which is on the 192.168.1.0/24 network, do the following:

1. Backup /etc/squid/squid.conf

2. # vi /etc/squid/squid.conf

3. Add the following line near the comments associated with visible_hostname:

   visible_hostname server2

4. Add the following two lines near the http_access command

   acl our_networks src 192.168.1.0/24

   http_access allow our_networks

5. Save the file

6. # squid -z

7. Run from the command line:

   # system-config-securitylevel

8. Add other port

   3128 tcp

9. Set SElinux

   # setsebool -P squid_connect_any 1

10. Set squid to start when you reboot linux

    # chkconfig squid on

11. Start squid

    # service squid start

12. Configure the client browser as following: > Tools > Internet option > Network settings > and setup Squid server IP address and port # 3128.