WordPress Firewall 2

This WordPress plugin monitors web requests to identify and stop the most obvious attacks.

Author:Matthew Pavkov (profile at wordpress.org)
WordPress version required:2.6.1
WordPress version tested:3.0.5
Plugin version:1.3
Added to WordPress repository:29-10-2010
Last updated:29-10-2010
Warning! This plugin has not been updated in over 2 years. It may no longer be maintained or supported and may have compatibility issues when used with more recent versions of WordPress.
Rating, %:96
Rated by:4
Plugin URI:http://matthewpavkov.com/wordpress-plugins/wo...
Total downloads:130 829
Active installs:70 000+
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This is an updated version of the popular WordPress Firewall plugin, with fixes for all known bugs and a few new features!

This WordPress plugin investigates web requests with simple, WordPress-specific heuristics, to identify and stop the most obvious attacks. There are a few powerful, generic modules that do this; but they're not always installed on web servers, and usually difficult to configure.

This plugin intelligently whitelists and blacklists pathological-looking phrases, based on which field they appear within, in a page request (unknown/numeric parameters vs. known post bodies, comment bodies, etc.). Its purpose is not to replace prompt and responsible upgrading, but rather to mitigate 0-day attacks and let bloggers sleep better at night.

Originally developed by SEO Egghead and released as WordPress Firewall.