SquidGuard
Whether you manage a business, work in marketing, or work on SEO and want to make sure your visitors don't get a 404 error message ever again, URL redirection software like SquidGuard is a lifechanger. SquidGuard is a plugin for Squid, a web proxy application for Linux, that runs on versions 2.x and 3.x and enhances the capabilities of Squid. It is a fast and adjustable web filter , redirector, and access controller, which enables the user to define numerous access rules with various restrictions for each user group. Pål Baltzersen and Lars Erik Håland initially developed it, and in 1990, it was implemented and extended by Lars Erik Håland for Danish telecommunications company Tele Danmark InterNordia. Since 2006 SquidGuard has been maintained and distributed by Shalla Secure Services under the GNU, General Public License Version 2 and, therefore, can be freely used (some license conditions apply). The prerequisite for operating SquidGuard is for Squid to be running. ...