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<h4>A true Web Application Firewall</h4>
<p>NinjaFirewall (WP Edition) is a true Web Application Firewall. Although it can be installed and configured just like a plugin, it is a stand-alone firewall that stands in front of WordPress.</p>
<p>It allows any blog administrator to benefit from very advanced and powerful security features that usually aren’t available at the WordPress level, but only in security applications such as the Apache <a href="http://www.modsecurity.org/" title="" rel="nofollow ugc">ModSecurity</a> module or the PHP <a href="http://suhosin.org/" title="" rel="nofollow ugc">Suhosin</a> extension.</p>
<blockquote>
<p>NinjaFirewall requires at least PHP 7.1, MySQLi extension and is only compatible with Unix-like OS (Linux, BSD). It is <strong>not compatible with Microsoft Windows</strong>.</p>
</blockquote>
<p>NinjaFirewall can hook, scan, sanitise or reject any HTTP/HTTPS request sent to a PHP script before it reaches WordPress or any of its plugins. All scripts located inside the blog installation directories and sub-directories will be protected, including those that aren’t part of the WordPress package. Even encoded PHP scripts, hackers shell scripts and backdoors will be filtered by NinjaFirewall.</p>
<h4>Powerful filtering engine</h4>
<p>NinjaFirewall includes the most powerful filtering engine available in a WordPress plugin. Its most important feature is its ability to normalize and transform data from incoming HTTP requests which allows it to detect Web Application Firewall evasion techniques and obfuscation tactics used by hackers, as well as to support and decode a large set of encodings. See our blog for a full description: <a href="https://blog.nintechnet.com/introduction-to-ninjafirewall-filtering-engine/" title="" rel="nofollow ugc">An introduction to NinjaFirewall filtering engine</a>.</p>
<h4>Fastest and most efficient brute-force attack protection for WordPress</h4>
<p>By processing incoming HTTP requests before your blog and any of its plugins, NinjaFirewall is the only plugin for WordPress able to protect it against very large brute-force attacks, including distributed attacks coming from several thousands of different IPs.</p>
<p>See our benchmarks and stress-tests: <a href="https://blog.nintechnet.com/wordpress-brute-force-attack-detection-plugins-comparison-2015/" title="" rel="nofollow ugc">Brute-force attack detection plugins comparison</a></p>
<p>The protection applies to the <code>wp-login.php</code> script but can be extended to the <code>xmlrpc.php</code> one. The incident can also be written to the server <code>AUTH</code> log, which can be useful to the system administrator for monitoring purposes or banning IPs at the server level (e.g., Fail2ban).</p>
<h4>Real-time detection</h4>
<p><strong>File Guard</strong> real-time detection is a totally unique feature provided by NinjaFirewall: it can detect, in real-time, any access to a PHP file that was recently modified or created, and alert you about this. If a hacker uploaded a shell script to your site (or injected a backdoor into an already existing file) and tried to directly access that file using his browser or a script, NinjaFirewall would hook the HTTP request and immediately detect that the file was recently modified or created. It would send you an alert with all details (script name, IP, request, date and time).</p>
<h4>File integrity monitoring</h4>
<p><strong>File Check</strong> lets you perform file integrity monitoring by scanning your website hourly, twicedaily or daily. Any modification made to a file will be detected: file content, file permissions, file ownership, timestamp as well as file creation and deletion.</p>
<h4>Watch your website traffic in real time</h4>
<p><strong>Live Log</strong> lets you watch your website traffic in real time. It displays connections in a format similar to the one used by the <code>tail -f</code> Unix command. Because it communicates directly with the firewall, i.e., without loading WordPress, <strong>Live Log</strong> is fast, lightweight and it will not affect your server load, even if you set its refresh rate to the lowest value.</p>
<h4>Event Notifications</h4>
<p>NinjaFirewall can alert you by email on specific events triggered within your blog. Some of those alerts are enabled by default and it is highly recommended to keep them enabled. It is not unusual for a hacker, after breaking into your WordPress admin console, to install or just to upload a backdoored plugin or theme in order to take full control of your website. NinjaFirewall can also <a href="https://blog.nintechnet.com/ninjafirewall-wp-edition-adds-php-backtrace-to-email-notifications/" title="NinjaFirewall adds PHP backtrace to email notifications" rel="nofollow ugc">attach a PHP backtrace</a> to important notifications.</p>
<p>Monitored events:</p>
<ul>
<li>Administrator login.</li>
<li>Modification of any administrator account in the database.</li>
<li>Plugins upload, installation, (de)activation, update, deletion.</li>
<li>Themes upload, installation, activation, deletion.</li>
<li>WordPress update.</li>
<li>Pending security update in your plugins and themes.</li>
</ul>
<h4>Stay protected against the latest WordPress security vulnerabilities</h4>
<p>To get the most efficient protection, NinjaFirewall can automatically update its security rules daily, twice daily or even hourly. Each time a new vulnerability is found in WordPress or one of its plugins/themes, a new set of security rules will be made available to protect your blog immediately.</p>
<h4>Strong Privacy</h4>
<p>Unlike a Cloud Web Application Firewall, or Cloud WAF, NinjaFirewall works and filters the traffic on your own server and infrastructure. That means that your sensitive data (contact form messages, customers credit card number, login credentials etc) remains on your server and is not routed through a third-party company’s servers, which could pose unnecessary risks (e.g., decryption of your HTTPS traffic in order to inspect it, employees accessing your data or logs in plain text, theft of private information, man-in-the-middle attack etc).</p>
<p>Your website can run NinjaFirewall and be <strong>compliant with the General Data Protection Regulation (GDPR)</strong>. <a href="https://blog.nintechnet.com/ninjafirewall-general-data-protection-regulation-compliance/" title="GDPR Compliance" rel="nofollow ugc">See our blog for more details</a>.</p>
<h4>IPv6 compatibility</h4>
<p>IPv6 compatibility is a mandatory feature for a security plugin: if it supports only IPv4, hackers can easily bypass the plugin by using an IPv6. NinjaFirewall natively supports IPv4 and IPv6 protocols, for both public and private addresses.</p>
<h4>Multi-site support</h4>
<p>NinjaFirewall is multi-site compatible. It will protect all sites from your network and its configuration interface will be accessible only to the Super Admin from the network main site.</p>
<h4>Possibility to prepend your own PHP code to the firewall</h4>
<p>You can prepend your own PHP code to the firewall with the help of an <a href="https://blog.nintechnet.com/ninjafirewall-wp-edition-the-htninja-configuration-file/" rel="nofollow ugc">optional distributed configuration file</a>. It will be processed before WordPress and all its plugins are loaded. This is a very powerful feature, and there is almost no limit to what you can do: add your own security rules, manipulate HTTP requests, variables etc.</p>
<h4>Low Footprint Firewall</h4>
<p>NinjaFirewall is very fast, optimised, compact, and requires very low system resource.<br />
See for yourself: download and install the <a href="https://wordpress.org/plugins/code-profiler/" title="" rel="ugc">Code Profiler</a> plugin and compare NinjaFirewall’s performance with other security plugins.</p>
<h4>Non-Intrusive User Interface</h4>
<p>NinjaFirewall looks and feels like a built-in WordPress feature. It does not contain intrusive banners, warnings or flashy colors. It uses the WordPress simple and clean interface and is also smartphone-friendly.</p>
<h4>Contextual Help</h4>
<p>Each NinjaFirewall menu page has a contextual help screen with useful information about how to use and configure it.<br />
If you need help, click on the <em>Help</em> menu tab located in the upper right corner of each page in your admin panel.</p>
<h4>Need more security ?</h4>
<p>Check out our new supercharged edition: <a href="https://nintechnet.com/ninjafirewall/wp-edition/" title="NinjaFirewall WP+ Edition" rel="nofollow ugc">NinjaFirewall WP+ Edition</a></p>
<ul>
<li>Unix shared memory use for inter-process communication and blazing fast performances.</li>
<li>IP-based Access Control.</li>
<li>Role-based Access Control.</li>
<li>Country-based Access Control via geolocation.</li>
<li>URL-based Access Control.</li>
<li>Bot-based Access Control.</li>
<li>Import/Export the configuration from WP-CLI.</li>
<li><a href="https://blog.nintechnet.com/centralized-logging-with-ninjafirewall/" title="Centralized Logging" rel="nofollow ugc">Centralized Logging</a>.</li>
<li>Antispam for comment and user regisration forms.</li>
<li>Rate limiting option to block aggressive bots, crawlers, web scrapers and HTTP attacks.</li>
<li>Response body filter to scan the output of the HTML page right before it is sent to your visitors browser.</li>
<li>Better File uploads management.</li>
<li>Better logs management.</li>
<li><a href="https://blog.nintechnet.com/syslog-logging-with-ninjafirewall/" title="Syslog logging" rel="nofollow ugc">Syslog logging</a>.</li>
</ul>
<p><a href="https://nintechnet.com/ninjafirewall/wp-edition/" title="" rel="nofollow ugc">Learn more</a> about the WP+ Edition unique features. <a href="https://nintechnet.com/ninjafirewall/wp-edition/?comparison" title="" rel="nofollow ugc">Compare</a> the WP and WP+ Editions.</p>
<h4>Requirements</h4>
<ul>
<li>WordPress 4.9+</li>
<li>Admin/Superadmin with <code>manage_options</code> + <code>unfiltered_html capabilities</code>.</li>
<li>PHP 7.1+</li>
<li>MySQL or MariaDB with MySQLi extension</li>
<li>Apache / Nginx / LiteSpeed / Openlitespeed compatible</li>
<li>Unix-like operating systems only (Linux, BSD etc). NinjaFirewall is <strong>NOT</strong> compatible with Microsoft Windows.</li>
</ul>


NinjaFirewall (WP Edition) – Advanced Security Plugin and Firewall

A true Web Application Firewall to protect and secure WordPress.

keith graham

<p>This is a very simple threat scan that looks for things out of place in the content directory as well as the database.</p>
<p>It searches PHP files for the occurrence of the eval() function, which, although a valuable part of PHP is also the door that hackers use in order to infect systems. The eval() function is avoided by many programmers unless there is a real need. It is sometimes used by hackers to hide their malicious code or to inject future threats into infected systems. If you find a theme or a plugin that uses the eval() function it is safer to delete it and ask the author to provide a new version that does not use this function.</p>
<p>When you scan your system you undoubtedly see the eval used in javascript because it is used in the javascript AJAX and JSON functionality. The appearance of eval in these cases does not mean that there is a possible threat. It just means that you should inspect the code to make sure that it is in a javascript section and not native PHP.</p>
<p>The plugin continues its scan by checking the database tables for javascript or html where it should not be found.</p>
<p>Normally, javascript is common in the post body, but if the script tag is found in a title or a text field where it does not belong it is probably because the script is hiding something, such as a hidden admin user, so that the normal administration pages do not show bad records. The scan looks for this and displays the table and record number where it believes there is something hinky.</p>
<p>The scan continues looking in the database for certain html in places where it does not belong. Recent threats have been putting html into fields in the options table so that users will be sent to malicious sites. The presence of html in options values is suspect and should be checked.</p>
<p>The options table will have things placed there by plugins so it is difficult to tell if scripts, iframes, and other html tags are a threat. They will be reported, but they should be checked before deleting the entries.</p>
<p>This plugin is just a simple scan and does not try to fix any problems. It will show things that may not be threats, but should be checked. If anything shows up you should try to repair the damage or hire someone to do it. I am not a security expert, but a programmer who discovered these types of things in a friend’s blog. After many hours of checking I was able to fix the problem, but a professional could have done it faster and easier, although they would have charged for it.</p>
<p>You probably do not have a backup to your blog, so if this scan shows you are clean; your next step is to install one of the plugins that does regular backups of your system. Next make sure you have the latest WordPress version.</p>
<p>If you think you have problems, the first thing to do is change your user id and password. Next make a backup of the infected system. Any repairs to WordPress might delete important data so you might lose posts, and the backup will help you recover missing posts.</p>
<p>The next step is to install the latest version of WordPress. The new versions usually have fixes for older threats.</p>
<p>You may want to export your WordPress posts, make a new clean installation of WordPress, and then import the old posts.</p>
<p>If this doesn’t work it is time to get a pro involved.</p>
<p>A clean scan does not mean you are safe. Please do Backups and keep your installation up to date!</p>
<h3>Support</h3>
<p>This plugin is in active development. All feedback is welcome.<br />
If this plugin helps you, you might support my programming by buying<br />
one of my books: https://linktr.ee/keithpgraham</p>


Threat Scan Plugin

This is a very simple threat scan that looks for things out of place in the content directory as well as the database.

NinjaFirewall (WP Edition) – Advanced Security Plugin and Firewall vs Threat Scan Plugin