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Practical Linux Security Cookbook
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Squid is a web proxy application with a variety of configurations and uses. Squid has a large number of access controls and supports different protocols, such as HTTP, HTTPS, FTP, and SSL. In this section, we will see how to use Squid as an HTTP proxy.
To install and use Squid on a particular system and network, ensure that the system has enough physical memory, because Squid also works as a cache proxy server, and thus needs space for maintaining the cache. We are using an Ubuntu system for our example and Squid is available in Ubuntu repositories. So, we need to ensure that our system is up to date. To do this, we run this command:
apt-get update
And then we run this command:
apt-get upgrade
To install and configure Squid on our system, we have to follow these steps: