E2guardian – web filtering software

E2guardian is a web content filter that can operate as an explicit or transparent proxy, or as an ICAP server. It can inspect page content, URLs and request headers rather than relying solely on lists of blocked websites.

Filtering can be tailored for different groups of users. Its storyboard system provides flexible control over filtering logic, while SSL inspection extends filtering to encrypted traffic.

E2guardian also supports content scanning plugins, authentication methods, time-based restrictions and detailed logging.

This is free and open source software.

Key Features

• Explicit and transparent proxy modes together with ICAP REQMOD and RESPMOD support.
• Content filtering using phrases, URLs, headers and regular expressions.
• Separate filtering configurations and storyboards for different groups of users.
• SSL inspection and transparent HTTPS filtering.
• Content scanner plugin system including anti-virus scanning.
• Allow, block and grey lists for domains and URLs.
• Header analysis and manipulation, including cookie handling.
• Time-based filtering and temporary bypass controls.
• Multiple authentication methods including Basic, Digest, IP and DNS authentication.
• Logging facilities including request, response and alert logging.

Website: github.com/e2guardian/e2guardian
Support:
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.

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