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Introduction
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The utility squid is an internet proxy server that can be used within a network to
distribute an internet connection to all the computers within the network. One central computer is connected to the internet
through any means such as dial-up, cable modem, ISDN, DSL, or T1, runs squid, and thus acts
as the firewall to the internet. Because it is a proxy, it has the capabilities to log all user actions such as the URLs visited.
There are many features that can be configured in squid. This guide is meant to be a quick start guide for those who are eager to
get squid working and then configure it from there.
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squid Configuration
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Squid uses the configuration file squid.conf. It is usually located in the /etc/squid
directory. Access through the proxy can be given by individual IP addresses or by a subnet of IP addresses.
In squid.conf search for the default access control lists(acl) and add the following line below them:
acl mynetwork src 192.168.1.0/255.255.255.0 (for subnet)
acl mynetwork src 192.168.1.10/255.255.255.0 (for individual IP)
Then add the access control list named "mynetwork" to the http_access list with the following line:
http_access allow mynetwork
The default port for the proxy is 3128. Uncomment the following line and replace 3128 with the desired port :
http_port 3128
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Starting, stopping, and restarting squid
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Assuming you have the runlevel scripts installed you can use the following commands as root:
| Start squid | /etc/rc.d/init.d/squid start |
| Restart squid | /etc/rc.d/init.d/squid restart |
| Stop squid | /etc/rc.d/init.d/squid stop |
or issue the following TWO commands as root:
squid -z
squid
or configure squid to start at boot time using your runlevels.
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Configuring squid Clients
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To configure any application including a web browser to use squid, modify the proxy setting with the IP address of the squid server and the port number
(default 3128).
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What's Related
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