<\/span><\/h3>\n\n\n\nNext, you need to edit the Squid configuration file to enable authentication. Open the configuration file by typing the following command:<\/p>\n\n\n\n
sudo nano \/etc\/squid\/squid.conf<\/code><\/pre>\n\n\n\nFind the line that reads “http_access allow all” and change it to “http_access allow USERNAME”. Replace “USERNAME” with the username you added to the password file.<\/p>\n\n\n
\n
Find the line that reads “auth_param basic program \/usr\/lib\/squid\/basic_ncsa_auth \/etc\/squid\/passwd” and uncomment it by removing the “#” symbol at the beginning of the line. This line specifies the path to the password file.<\/p>\n\n\n\n
\n
\n
\n
Save the changes to the configuration file by pressing “Ctrl+X”, then “Y”, and finally “Enter”.<\/p>\n\n\n\n
<\/span>Step 3: Restart Squid Proxy<\/span><\/h3>\n\n\n\nNow that you have edited the Squid configuration file, you need to restart the Squid Proxy service by typing the following command:<\/p>\n\n\n\n
sudo systemctl restart squid<\/code><\/pre>\n\n\n\n<\/p>\n\n\n\n
<\/span>Step 4: Test Authentication<\/span><\/h3>\n\n\n\n
<\/span>How to Block Websites<\/span><\/h3>\n\n\n\nTo block certain websites on your Ubuntu machine using Squid Proxy, follow these steps:<\/p>\n\n\n\n
<\/span>Step 1: Create an ACL for the Blocked Websites<\/span><\/h3>\n\n\n\n<\/p>\n\n\n\n
Next, you need to create an Access Control List (ACL) for the websites you want to block. Add the following lines to the configuration file:<\/p>\n\n\n\n
acl blocked_sites dstdomain \"\/etc\/squid\/blocked_sites.txt\" <\/code><\/pre>\n\n\n\nhttp_access deny blocked_sites<\/code><\/pre>\n\n\n\nThe first line creates an ACL called “blocked_sites” and specifies the path to a text file called “blocked_sites.txt” that contains a list of websites you want to block. The second line denies access to any website that matches the “blocked_sites” ACL.<\/p>\n\n\n\n
<\/span>Step 3: Create the Blocked Sites File<\/span><\/h3>\n\n\n\nCreate the “blocked_sites.txt” file in the \/etc\/squid\/ directory by typing the following command:<\/p>\n\n\n\n
sudo nano \/etc\/squid\/blocked_sites.txt<\/code><\/pre>\n\n\n\nAdd the websites you want to block to the file, one website per line. For example, to block Facebook and YouTube, add the following lines:<\/p>\n\n\n\n
facebook.comSave the changes to the file by pressing “Ctrl+X”, then “Y”, and finally “Enter”.<\/p>\n\n\n\n
<\/span>Step 4: Restart Squid Proxy<\/span><\/h3>\n\n\n\nRestart the Squid Proxy service by typing the following command:<\/p>\n\n\n\n
sudo systemctl restart squid<\/code><\/pre>\n\n\n\n<\/span>Step 5: Test the Blocked Websites<\/span><\/h3>\n\n\n\nTo test if the websites are blocked, try accessing one of the blocked sites from a web browser. If everything is working correctly, you should see an error message indicating that the website is blocked.<\/p>\n\n\n\n
<\/span>How to Uninstall Squid Proxy Server<\/span><\/h3>\n\n\n\nIf you want to uninstall Squid Proxy Server from your Ubuntu machine, follow these steps:<\/p>\n\n\n\n
<\/span>Step 1: Stop the Squid Proxy Service<\/span><\/h3>\n\n\n\nBefore uninstalling Squid Proxy Server, you need to stop the Squid Proxy service by typing the following command:<\/p>\n\n\n\n
sudo systemctl stop squid<\/code><\/pre>\n\n\n\n<\/span>Step 2: Remove the Squid Proxy Package <\/span><\/h3>\n\n\n\nRemove the Squid Proxy package from your Ubuntu machine by typing the following command:<\/p>\n\n\n\n
sudo apt-get remove squid<\/code><\/pre>\n\n\n\nThis command will remove the Squid Proxy package from your system, but it will not remove any configuration files or data associated with the package.<\/p>\n\n\n\n
<\/span>Step 3: Remove the Squid Proxy Configuration Files<\/span><\/h3>\n\n\n\nIf you want to remove the Squid Proxy configuration files, type the following command:<\/p>\n\n\n\n
sudo apt-get purge squid<\/code><\/pre>\n\n\n\nThis command will remove the Squid Proxy package and all associated configuration files and data from your system.<\/p>\n\n\n\n
<\/span>Step 4: Remove the Squid Proxy Cache<\/span><\/h3>\n\n\n\nIf you want to remove the Squid Proxy cache, type the following command:<\/p>\n\n\n\n
sudo rm -rf \/var\/spool\/squid<\/code><\/pre>\n\n\n\nThis command will remove the Squid Proxy cache directory and all its contents.<\/p>\n\n\n\n
<\/span>Step 5: Restart your Ubuntu Machine<\/span><\/h3>\n\n\n\nRestart your Ubuntu machine by typing the following command:<\/p>\n\n\n\n
sudo reboot<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"In this tutorial, we will walk you through the process of installing and configuring a proxy server on Ubuntu using Squid Proxy. Are you looking for a way to improve your internet speed and security? Installing a proxy server on your Ubuntu machine using Squid Proxy can help you achieve<\/p>\n","protected":false},"author":8,"featured_media":3253,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[3],"tags":[285,286,288,287],"class_list":["post-3247","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tutorial-how-to","tag-configure-proxy-server","tag-squid-proxy-on-ubuntu","tag-ubuntu-proxy-server","tag-ubuntu-squid-proxy"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.virtono.com\/community\/wp-content\/uploads\/2023\/04\/Install-and-Configure-Proxy-Server-on-Ubuntu-Using-Squid-Proxy.png?fit=600%2C330&ssl=1","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p7ISfL-Qn","jetpack_likes_enabled":true,"jetpack-related-posts":[{"id":1714,"url":"https:\/\/www.virtono.com\/community\/tutorial-how-to\/install-and-configure-proxy-server-on-centos-7-8-server-squid-proxy\/","url_meta":{"origin":3247,"position":0},"title":"Install and configure Proxy Server on Centos 7\/8 Server: Squid Proxy","author":"Shreyash Sharma","date":"June 16, 2020","format":false,"excerpt":"If you would like to read what are proxy servers and how they can benefit you, please refer: Click If you would like to buy a VPS to make your own Proxy Server along with this tutorial check out: Click Squid Proxy Little introduction about the proxy of the article:\u2026","rel":"","context":"In "Tutorials"","block_context":{"text":"Tutorials","link":"https:\/\/www.virtono.com\/community\/category\/tutorial-how-to\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.virtono.com\/community\/wp-content\/uploads\/2020\/06\/remote-denial-of-service-vulnerability-patched-in-squid-proxy-cache-server-523492-2.png?fit=1200%2C900&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.virtono.com\/community\/wp-content\/uploads\/2020\/06\/remote-denial-of-service-vulnerability-patched-in-squid-proxy-cache-server-523492-2.png?fit=1200%2C900&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.virtono.com\/community\/wp-content\/uploads\/2020\/06\/remote-denial-of-service-vulnerability-patched-in-squid-proxy-cache-server-523492-2.png?fit=1200%2C900&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.virtono.com\/community\/wp-content\/uploads\/2020\/06\/remote-denial-of-service-vulnerability-patched-in-squid-proxy-cache-server-523492-2.png?fit=1200%2C900&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.virtono.com\/community\/wp-content\/uploads\/2020\/06\/remote-denial-of-service-vulnerability-patched-in-squid-proxy-cache-server-523492-2.png?fit=1200%2C900&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":2922,"url":"https:\/\/www.virtono.com\/community\/tutorial-how-to\/how-to-install-nginx-on-ubuntu-20-04\/","url_meta":{"origin":3247,"position":1},"title":"How To Install Nginx on Ubuntu 20.04","author":"George B.","date":"July 29, 2022","format":false,"excerpt":"What is Nginx? Nginx, abbreviated NGI\u0418X, is a web server that also functions as a reverse proxy, load balancer, mail proxy, and HTTP cache. Igor Sysoev created the software, which was made public in 2004. Nginx is free and open-source software distributed under the terms of the 2-clause BSD license.\u2026","rel":"","context":"In "Tutorials"","block_context":{"text":"Tutorials","link":"https:\/\/www.virtono.com\/community\/category\/tutorial-how-to\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.virtono.com\/community\/wp-content\/uploads\/2022\/07\/Nginx-Logo.jpeg?fit=1200%2C578&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.virtono.com\/community\/wp-content\/uploads\/2022\/07\/Nginx-Logo.jpeg?fit=1200%2C578&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.virtono.com\/community\/wp-content\/uploads\/2022\/07\/Nginx-Logo.jpeg?fit=1200%2C578&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.virtono.com\/community\/wp-content\/uploads\/2022\/07\/Nginx-Logo.jpeg?fit=1200%2C578&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.virtono.com\/community\/wp-content\/uploads\/2022\/07\/Nginx-Logo.jpeg?fit=1200%2C578&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":1708,"url":"https:\/\/www.virtono.com\/community\/knowledgebase\/the-proxy-server-what-why-and-how\/","url_meta":{"origin":3247,"position":2},"title":"The Proxy Server, What, Why and How","author":"Shreyash Sharma","date":"June 16, 2020","format":false,"excerpt":"In the current world where billion-dollar enterprises are doing their best to figure out everything about you. Talking about a simple proxy server that you can easily configure and keep them guessing seems justified. If you just want to jump to configuring a proxy server here is the How. Think\u2026","rel":"","context":"In "Knowledgebase"","block_context":{"text":"Knowledgebase","link":"https:\/\/www.virtono.com\/community\/category\/knowledgebase\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.virtono.com\/community\/wp-content\/uploads\/2020\/06\/proxy-4620557_640.jpg?fit=640%2C472&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.virtono.com\/community\/wp-content\/uploads\/2020\/06\/proxy-4620557_640.jpg?fit=640%2C472&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.virtono.com\/community\/wp-content\/uploads\/2020\/06\/proxy-4620557_640.jpg?fit=640%2C472&ssl=1&resize=525%2C300 1.5x"},"classes":[]},{"id":3507,"url":"https:\/\/www.virtono.com\/community\/tutorial-how-to\/how-to-install-lemp-stack-linux-nginx-mysql-and-php-on-ubuntu-22-04\/","url_meta":{"origin":3247,"position":3},"title":"How to install LEMP stack (Linux, Nginx, MySQL, and PHP) on Ubuntu 22.04","author":"George B.","date":"June 20, 2023","format":false,"excerpt":"Introduction The LEMP stack is a popular software stack for web development and hosting. It includes four major components: Linux, Nginx, MySQL, and PHP. Each component serves a specific purpose in powering dynamic websites and web applications. Linux is the operating system that serves as the LEMP stack's foundation. In\u2026","rel":"","context":"In "Tutorials"","block_context":{"text":"Tutorials","link":"https:\/\/www.virtono.com\/community\/category\/tutorial-how-to\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.virtono.com\/community\/wp-content\/uploads\/2023\/06\/How-to-install-LEMP-stack-Linux-Nginx-MySQL-PHP-on-Ubuntu-22-04.png?fit=600%2C330&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.virtono.com\/community\/wp-content\/uploads\/2023\/06\/How-to-install-LEMP-stack-Linux-Nginx-MySQL-PHP-on-Ubuntu-22-04.png?fit=600%2C330&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.virtono.com\/community\/wp-content\/uploads\/2023\/06\/How-to-install-LEMP-stack-Linux-Nginx-MySQL-PHP-on-Ubuntu-22-04.png?fit=600%2C330&ssl=1&resize=525%2C300 1.5x"},"classes":[]},{"id":3492,"url":"https:\/\/www.virtono.com\/community\/tutorial-how-to\/how-to-install-and-configure-mail-server-on-ubuntu\/","url_meta":{"origin":3247,"position":4},"title":"How to Install and Configure Mail Server on Ubuntu","author":"George B.","date":"June 11, 2023","format":false,"excerpt":"Setting up a mail server on Ubuntu can be a daunting task for many, but with the right guidance and understanding, it becomes an achievable goal. In this article, we will provide a step-by-step guide on how to install and configure a mail server on Ubuntu. By the end, you'll\u2026","rel":"","context":"In "Tutorials"","block_context":{"text":"Tutorials","link":"https:\/\/www.virtono.com\/community\/category\/tutorial-how-to\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.virtono.com\/community\/wp-content\/uploads\/2023\/06\/How-to-Install-and-Configure-Mail-Server-on-Ubuntu.png?fit=600%2C330&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.virtono.com\/community\/wp-content\/uploads\/2023\/06\/How-to-Install-and-Configure-Mail-Server-on-Ubuntu.png?fit=600%2C330&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.virtono.com\/community\/wp-content\/uploads\/2023\/06\/How-to-Install-and-Configure-Mail-Server-on-Ubuntu.png?fit=600%2C330&ssl=1&resize=525%2C300 1.5x"},"classes":[]},{"id":1311,"url":"https:\/\/www.virtono.com\/community\/tutorial-how-to\/varnish-web-accelerator\/","url_meta":{"origin":3247,"position":5},"title":"Varnish Web accelerator","author":"Shreyash Sharma","date":"January 12, 2018","format":false,"excerpt":"Varnish\u00a0is a web accelerator (reverse proxy), which provides relief for the actual web server (the backend).\u00a0It has been designed from the ground up just for this use, unlike traditional proxies (eg Squid). The project website can be found here:\u00a0http:\/\/www.varnish-cache.org installation Varnish is part of Debian (Wheezy: Version 3.0.2) and Ubuntu\u2026","rel":"","context":"In "Knowledgebase"","block_context":{"text":"Knowledgebase","link":"https:\/\/www.virtono.com\/community\/category\/knowledgebase\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.virtono.com\/community\/wp-content\/uploads\/2018\/01\/varnishcache_rgb-gimp2-alpha.png?fit=1200%2C297&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.virtono.com\/community\/wp-content\/uploads\/2018\/01\/varnishcache_rgb-gimp2-alpha.png?fit=1200%2C297&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.virtono.com\/community\/wp-content\/uploads\/2018\/01\/varnishcache_rgb-gimp2-alpha.png?fit=1200%2C297&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.virtono.com\/community\/wp-content\/uploads\/2018\/01\/varnishcache_rgb-gimp2-alpha.png?fit=1200%2C297&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.virtono.com\/community\/wp-content\/uploads\/2018\/01\/varnishcache_rgb-gimp2-alpha.png?fit=1200%2C297&ssl=1&resize=1050%2C600 3x"},"classes":[]}],"_links":{"self":[{"href":"https:\/\/www.virtono.com\/community\/wp-json\/wp\/v2\/posts\/3247","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.virtono.com\/community\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.virtono.com\/community\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.virtono.com\/community\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/www.virtono.com\/community\/wp-json\/wp\/v2\/comments?post=3247"}],"version-history":[{"count":1,"href":"https:\/\/www.virtono.com\/community\/wp-json\/wp\/v2\/posts\/3247\/revisions"}],"predecessor-version":[{"id":3254,"href":"https:\/\/www.virtono.com\/community\/wp-json\/wp\/v2\/posts\/3247\/revisions\/3254"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.virtono.com\/community\/wp-json\/wp\/v2\/media\/3253"}],"wp:attachment":[{"href":"https:\/\/www.virtono.com\/community\/wp-json\/wp\/v2\/media?parent=3247"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.virtono.com\/community\/wp-json\/wp\/v2\/categories?post=3247"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.virtono.com\/community\/wp-json\/wp\/v2\/tags?post=3247"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}