Fail2WP is a security-focused WordPress plugin designed to enhance access control and protect websites from unauthorized access. It offers a variety of features, including the ability to disable login with usernames, enforce email address requirements for new registrations, and block specific usernames. The plugin also prevents user enumeration and provides less detailed error messages during login failures, which adds an extra layer of security. Users can manage login permissions based on IP addresses or hostnames, and the plugin allows for the partial or full disabling of XMLRPC access and the WordPress REST API, ensuring comprehensive control over site access.

In addition to its core functionalities, Fail2WP integrates seamlessly with fail2ban, enabling dynamic blocking of suspicious IP addresses. The plugin supports recent versions of WordPress and PHP, ensuring compatibility and stability. With no JavaScript or tracking code involved, it prioritizes user privacy and security. Fail2WP is a valuable tool for anyone looking to bolster their WordPress site's defenses against unauthorized access and potential threats.