Title: Secure Owl Firewall
Author: Sajber Sove
Published: <strong>April 10, 2026</strong>
Last modified: April 10, 2026

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# Secure Owl Firewall

 By [Sajber Sove](https://profiles.wordpress.org/sajbersove/)

[Download](https://downloads.wordpress.org/plugin/secure-owl-firewall.1.0.1.zip)

 * [Details](https://wordpress.org/plugins/secure-owl-firewall/#description)
 * [Reviews](https://wordpress.org/plugins/secure-owl-firewall/#reviews)
 *  [Installation](https://wordpress.org/plugins/secure-owl-firewall/#installation)
 * [Development](https://wordpress.org/plugins/secure-owl-firewall/#developers)

 [Support](https://wordpress.org/support/plugin/secure-owl-firewall/)

## Description

Secure Owl Firewall is a fast, lightweight firewall plugin with an advanced rule
engine featuring PCRE pattern matching, a transformation pipeline, and JSON-based
rule configuration.

Key features:

 * JSON-based rules — 100+ default rules covering SQLi, XSS, RCE, LFI, SSRF, Log4Shell,
   and more
 * Transformation pipeline — urlDecode, lowercase, normalizePath, removeWhitespace,
   htmlEntityDecode, trim
 * Six inspection targets — REQUEST_URI, QUERY_STRING, USER_AGENT, REFERER, COOKIE,
   POST
 * MU-Plugin loader — runs before any regular plugin for earliest protection
 * Rate limiting — optional transient-based IP and subnet banning
 * Per-rule toggle — disable individual rules from the admin panel without editing
   files
 * File-based logging — 64MB cap with auto-rotation, protected log storage
 * Filterable — extensive filter hooks for customization

### Filter Hooks

 * `sswaf_ip_whitelist` — array of IPs to bypass the firewall
 * `sswaf_trusted_proxies` — array of trusted proxy IPs for X-Forwarded-For
 * `sswaf_post_scanning` — enable POST data inspection (default: true)
 * `sswaf_rules_file` — path to the rules JSON file
 * `sswaf_log_file` — path to the log file
 * `sswaf_log_max_size` — maximum log size in bytes
 * `sswaf_header_status` — HTTP status header for blocked requests
 * `sswaf_before_block` — action hook fired before blocking a request
 * `sswaf_rate_limit_ip_threshold` — override IP hit threshold
 * `sswaf_rate_limit_ip_duration` — override IP ban duration
 * `sswaf_rate_limit_ip_window` — override IP counting window

## Installation

 1. Upload the `secure-owl-firewall` folder to `/wp-content/plugins/`
 2. Activate through the Plugins menu
 3. The MU-Plugin loader is installed automatically for early execution
 4. Configure settings under Settings > Secure Owl Firewall

## Reviews

There are no reviews for this plugin.

## Contributors & Developers

“Secure Owl Firewall” is open source software. The following people have contributed
to this plugin.

Contributors

 *   [ Sajber Sove ](https://profiles.wordpress.org/sajbersove/)

[Translate “Secure Owl Firewall” into your language.](https://translate.wordpress.org/projects/wp-plugins/secure-owl-firewall)

### Interested in development?

[Browse the code](https://plugins.trac.wordpress.org/browser/secure-owl-firewall/),
check out the [SVN repository](https://plugins.svn.wordpress.org/secure-owl-firewall/),
or subscribe to the [development log](https://plugins.trac.wordpress.org/log/secure-owl-firewall/)
by [RSS](https://plugins.trac.wordpress.org/log/secure-owl-firewall/?limit=100&mode=stop_on_copy&format=rss).

## Changelog

#### 1.0.0

 * Initial release

#### 1.0.1

 * Updated security rules.
 * Updated log file cap to 24MB.

## Meta

 *  Version **1.0.1**
 *  Last updated **16 hours ago**
 *  Active installations **Fewer than 10**
 *  WordPress version ** 5.0 or higher **
 *  Tested up to **6.9.4**
 *  PHP version ** 7.4 or higher **
 * Tags
 * [firewall](https://wordpress.org/plugins/tags/firewall/)[protection](https://wordpress.org/plugins/tags/protection/)
   [security](https://wordpress.org/plugins/tags/security/)[WAF](https://wordpress.org/plugins/tags/waf/)
 *  [Advanced View](https://wordpress.org/plugins/secure-owl-firewall/advanced/)

## Ratings

No reviews have been submitted yet.

[Your review](https://wordpress.org/support/plugin/secure-owl-firewall/reviews/#new-post)

[See all reviews](https://wordpress.org/support/plugin/secure-owl-firewall/reviews/)

## Contributors

 *   [ Sajber Sove ](https://profiles.wordpress.org/sajbersove/)

## Support

Got something to say? Need help?

 [View support forum](https://wordpress.org/support/plugin/secure-owl-firewall/)