Title: BoundaryGuard Headers
Author: Jay Suthar
Published: <strong>29. december, 2025</strong>
Last modified: 5. januar, 2026

---

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# BoundaryGuard Headers

 Af [Jay Suthar](https://profiles.wordpress.org/jsjack74/)

[Download](https://downloads.wordpress.org/plugin/boundaryguard-headers.1.0.0.zip)

 * [Detaljer](https://da.wordpress.org/plugins/boundaryguard-headers/#description)
 * [Vurderinger](https://da.wordpress.org/plugins/boundaryguard-headers/#reviews)
 *  [Installation](https://da.wordpress.org/plugins/boundaryguard-headers/#installation)
 * [Udvikling](https://da.wordpress.org/plugins/boundaryguard-headers/#developers)

 [Support](https://wordpress.org/support/plugin/boundaryguard-headers/)

## Beskrivelse

BoundaryGuard Headers enforces modern HTTP security headers to harden your WordPress
site against XSS, clickjacking, mixed content, and cross-origin attacks.

**Key Features:**

 * **Essential Protection:** Adds X-Frame-Options, X-Content-Type-Options, Referrer-
   Policy, and Permissions-Policy to reduce attack surface and prevent clickjacking.
 * **HSTS (Strict Transport Security):** Forces HTTPS connections to help prevent
   protocol downgrade and man-in-the-middle attacks.
 * **Advanced Isolation (COOP/COEP):** Enables Cross-Origin-Opener-Policy and Cross-
   Origin-Embedder-Policy to improve cross-origin isolation and mitigate certain
   side-channel attacks.
 * **Content Security Policy (CSP):** One of the strongest defenses against XSS.
   Includes a dashboard-based CSP builder with preset options to whitelist trusted
   sources for scripts, styles, images, and more.
 * **CSP Report-Only Mode:** Test your policy safely without blocking content.
 * **Server Header Hardening:** Removes or limits exposure of headers such as `X-
   Powered-By` and `Server`.
 * **Lightweight and Fast:** Uses PHP headers for broad server compatibility and
   minimal performance impact.
 * **No `.htaccess` Editing Required:** Works without modifying server configuration
   files.

Designed for developers and site owners who want stronger security without unnecessary
complexity.

### External Services

This plugin provides a Content Security Policy (CSP) builder. To assist users, it
includes “Preset Buttons” that allow users to quickly add domain names to their 
own CSP whitelist.

**This plugin DOES NOT connect to, load data from, or send data to these services
automatically.** The following third-party domains are referenced as presets within
the admin dashboard for whitelisting purposes:
 * Google Analytics (www.google-analytics.
com) – Used for tracking whitelisting. [Privacy: https://policies.google.com/privacy]*
Google Tag Manager (www.googletagmanager.com) – Used for tag management. [Privacy:
https://policies.google.com/privacy] * Stripe (js.stripe.com, api.stripe.com) – 
Used for payment processing. [Privacy: https://stripe.com/privacy] * Facebook (www.
facebook.com, connect.facebook.net) – Used for social embeds. [Privacy: https://
www.facebook.com/policy.php] * YouTube (www.youtube.com, i.ytimg.com) – Used for
video embeds. [Privacy: https://policies.google.com/privacy] * Vimeo (player.vimeo.
com) – Used for video embeds. [Privacy: https://vimeo.com/privacy] * Gravatar (secure.
gravatar.com) – Used for user avatars. [Privacy: https://automattic.com/privacy/]

## Installation

 1. Upload the `boundaryguard-headers` folder to the `/wp-content/plugins/` directory.
 2. Activate the plugin through the **Plugins** menu in WordPress.
 3. Configure the settings from **Settings  BoundaryGuard Headers**.

## FAQ

### Does this plugin edit .htaccess?

No. BoundaryGuard Headers uses PHP headers, which improves compatibility across 
different hosting environments.

### Can I test Content Security Policy without breaking my site?

Yes. The plugin includes a **CSP Report-Only Mode** that allows you to monitor policy
violations without blocking any resources.

### Will this affect site performance?

No. The plugin is lightweight and adds negligible overhead, as headers are sent 
as part of the normal HTTP response.

## Anmeldelser

![](https://secure.gravatar.com/avatar/c344067e40ea7ac6265911750c5634490947a5aac22fcc81cab5c0bd68a2ed5e?
s=60&d=retro&r=g)

### 󠀁[Best plugin for security](https://wordpress.org/support/topic/best-plugin-for-security-3/)󠁿

 [jaymakadiya](https://profiles.wordpress.org/jaymakadiya/) 30. december, 2025

I’ve been using BoundaryGuard Headers on my WordPress site, and overall it’s a very
helpful security plugin. It focuses on adding important HTTP security headers — 
like Content Security Policy, X-Frame-Options, and HSTS — which helps protect the
site from things like XSS attacks and clickjacking.

 [ Læs 1 anmeldelse ](https://wordpress.org/support/plugin/boundaryguard-headers/reviews/)

## Bidragsydere & udviklere

“BoundaryGuard Headers” er open source-software. Følgende personer har bidraget 
til dette plugin.

Bidragsydere

 *   [ Jay Suthar ](https://profiles.wordpress.org/jsjack74/)

[Oversæt “BoundaryGuard Headers” til dit eget sprog.](https://translate.wordpress.org/projects/wp-plugins/boundaryguard-headers)

### Interesseret i udvikling?

[Gennemse koden](https://plugins.trac.wordpress.org/browser/boundaryguard-headers/),
tjek [SVN repository](https://plugins.svn.wordpress.org/boundaryguard-headers/),
eller abonner på [udviklerloggen](https://plugins.trac.wordpress.org/log/boundaryguard-headers/)
via [RSS](https://plugins.trac.wordpress.org/log/boundaryguard-headers/?limit=100&mode=stop_on_copy&format=rss).

## Ændringslog

#### 1.0.0

 * Initial release
 * Added essential HTTP security headers
 * Implemented HSTS support
 * Added CSP builder with report-only mode

## Meta

 *  Version **1.0.0**
 *  Senest opdateret **3 måneder siden**
 *  Aktive installationer **Færre end 10**
 *  WordPress-version ** 6.0 eller højere **
 *  Testet op til **6.9.4**
 *  PHP-version ** 7.4 eller højere **
 *  Sprog
 * [English (US)](https://wordpress.org/plugins/boundaryguard-headers/)
 * Tags
 * [csp](https://da.wordpress.org/plugins/tags/csp/)[hsts](https://da.wordpress.org/plugins/tags/hsts/)
   [http-headers](https://da.wordpress.org/plugins/tags/http-headers/)[security](https://da.wordpress.org/plugins/tags/security/)
   [xss](https://da.wordpress.org/plugins/tags/xss/)
 *  [Avanceret visning](https://da.wordpress.org/plugins/boundaryguard-headers/advanced/)

## Bedømmelser

 5 ud af 5 stjerner.

 *  [  1 5-stjernet anmeldelse     ](https://wordpress.org/support/plugin/boundaryguard-headers/reviews/?filter=5)
 *  [  0 4-stjernet anmeldelser     ](https://wordpress.org/support/plugin/boundaryguard-headers/reviews/?filter=4)
 *  [  0 3-stjernet anmeldelser     ](https://wordpress.org/support/plugin/boundaryguard-headers/reviews/?filter=3)
 *  [  0 2-stjernet anmeldelser     ](https://wordpress.org/support/plugin/boundaryguard-headers/reviews/?filter=2)
 *  [  0 1-stjernet anmeldelser     ](https://wordpress.org/support/plugin/boundaryguard-headers/reviews/?filter=1)

[Tilføj min vurdering](https://wordpress.org/support/plugin/boundaryguard-headers/reviews/#new-post)

[Se alle anmeldelser.](https://wordpress.org/support/plugin/boundaryguard-headers/reviews/)

## Bidragsydere

 *   [ Jay Suthar ](https://profiles.wordpress.org/jsjack74/)

## Support

Har du noget at sige? Har du brug for hjælp?

 [Vis supportforum](https://wordpress.org/support/plugin/boundaryguard-headers/)