Content Control Software

E2guardian – web filtering software

e2guardian is an Open Source web content filter.

It filters the actual content of pages based on many methods including phrase matching, request  header and URL filtering, etc.

It does not purely filter based on a banned list of sites.

Features include:

  • Built-in content scanner plugin system which includes AV scanning.
  • https transparent filtering.
  • ICAP server mode.
  • upstream proxy now optional.
  • rebuilt flexible filtering engine.
  • Can be configured to have multiple filter configurations to provide varying degrees of web filtering to different groups of users.
  • SSL Inspection.
  • NTLM and persistent connection support (kerberos in ICAP server mode).
  • Digest authentication support.
  • Basic authentication support.
  • IP authentication support.
  • DNS authentication support.
  • Header analysis and manipulation – you can also manipulate cookies.
  • Large file (2GB+) download & scanning support.
  • Whitelist domains and urls.
  • Blacklist domains and urls.
  • Greylist domains and urls.
  • Deny regular Expressions on urls, body content, and headers (also in greylist mode).
  • URL regular expression replacement so you can for example force safe search in search engines.
  • Deep URL scanning to spot URLs in URLs to for example block images in Google images.
  • Advanced advert blocking.
  • Many performance improvements.
  • Updates to handle all current web technology trends.
  • Blanket SSL blocking so you can block SSL anonymous proxies (without using SSL Bump).
  • Limit POST size (upload).
  • Temporary bypass provides a “click to acknowledge” capability.
  • Referrer Exceptions Exceptions based on URL in referring url.
  • Time Based Blocking.

Support: GitHub code repository
Developer: E2guardian developers
License: GNU General Public License v2.0

e2guardian is written in C++. Learn C++ with our recommended free books and free tutorials.

Return to Content Control

Popular series
Free and Open Source SoftwareThe largest compilation of the best free and open source software in the universe. Each article is supplied with a legendary ratings chart helping you to make informed decisions.
ReviewsHundreds of in-depth reviews offering our unbiased and expert opinion on software. We offer helpful and impartial information.
Alternatives to Proprietary SoftwareReplace proprietary software with open source alternatives: Google, Microsoft, Apple, Adobe, IBM, Autodesk, Oracle, Atlassian, Corel, Cisco, Intuit, and SAS.
GamesAwesome Free Linux Games Tools showcases a series of tools that making gaming on Linux a more pleasurable experience. This is a new series.
Artificial intelligence iconMachine Learning explores practical applications of machine learning and deep learning from a Linux perspective. We've written reviews of more than 40 self-hosted apps. All are free and open source.
Guide to LinuxNew to Linux? Read our Linux for Starters series. We start right at the basics and teach you everything you need to know to get started with Linux.
Alternatives to popular CLI tools showcases essential tools that are modern replacements for core Linux utilities.
System ToolsEssential Linux system tools focuses on small, indispensable utilities, useful for system administrators as well as regular users.
ProductivityLinux utilities to maximise your productivity. Small, indispensable tools, useful for anyone running a Linux machine.
AudioSurveys popular streaming services from a Linux perspective: Amazon Music Unlimited, Myuzi, Spotify, Deezer, Tidal.
Saving Money with LinuxSaving Money with Linux looks at how you can reduce your energy bills running Linux.
Home ComputersHome computers became commonplace in the 1980s. Emulate home computers including the Commodore 64, Amiga, Atari ST, ZX81, Amstrad CPC, and ZX Spectrum.
Now and ThenNow and Then examines how promising open source software fared over the years. It can be a bumpy ride.
Linux at HomeLinux at Home looks at a range of home activities where Linux can play its part, making the most of our time at home, keeping active and engaged.
Linux CandyLinux Candy reveals the lighter side of Linux. Have some fun and escape from the daily drudgery.
DockerGetting Started with Docker helps you master Docker, a set of platform as a service products that delivers software in packages called containers.
Android AppsBest Free Android Apps. We showcase free Android apps that are definitely worth downloading. There's a strict eligibility criteria for inclusion in this series.
Programming BooksThese best free books accelerate your learning of every programming language. Learn a new language today!
Programming TutorialsThese free tutorials offer the perfect tonic to our free programming books series.
Linux Around The WorldLinux Around The World showcases usergroups that are relevant to Linux enthusiasts. Great ways to meet up with fellow enthusiasts.
Stars and StripesStars and Stripes is an occasional series looking at the impact of Linux in the USA.
Notify of

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Inline Feedbacks
View all comments