As the world becomes increasingly digital, website security is more crucial than ever. One of the most effective ways to protect your website from malicious attacks is through Content Security Policy (CSP) frame-ancestors. But how do you implement this complex feature successfully in popular web servers such as Apache and Nginx? Fear not, because in this blog post, we’ll guide you through the steps to effortlessly integrate CSP frame-ancestors into your WordPress site with ease!
Apache HTTP
CSP frame-ancestors are a security feature in modern web browsers that allow you to restrict where frames can be loaded from. This is an important feature for securing your website, as it prevents malicious actors from loading malicious content into frames that are hosted on your website.
There are three popular web servers that support CSP frame-ancestors: Apache, Nginx, and WordPress. In this tutorial, we will show you how to implement CSP frame-ancestors in Apache, Nginx, and WordPress using the csp module.
First, we will need to install the csp module for Apache. To do this, run the following command:
sudo apt-get install apache2-mod_csp
Nginx
Introduction
CSP (Content Security Policy) is a specification for controlling how content is delivered across a network. It can be used to protect webpages from being accessed by unauthorized users, and to mitigate security risks arising from cross-site scripting and other issues.
Frame-ancestors are a feature of CSP that allow scripts to access frames on other websites. This can be useful in implementing scripted cross-site interaction features or in accessing content that is not accessible through the standard website browsing interface.
In this article, we will show you how to implement frame-ancestors in Apache, Nginx and WordPress using the csp-frame-ancestors module.
Configuring Apache for CSP Frame-Ancestors
To enable frame-ancestors in Apache, you first need to install the csp-frame-ancestors module. Once installed, you will need to configure it using the following configuration file:
.. In addition, you will need to ensure that your web server is configured to allow access from remote clients: … …. Note that if your website relies on cookies for authentication or other purposes, you will also need to configure your web server so that cookies are accepted over secure connections. For example, you may want to add
WordPress
WordPress is a popular content management system (CMS) used to create and manage websites. While it’s possible to add CSP support without touching WordPress, doing so can be more complicated. In this article, we’ll show you how to add frame-ancestors support to Apache, Nginx and WordPress using three different methods.
To add frame-ancestors support to Apache, first install the apache2-csp module. Next, add the following lines to your httpd.conf file:
# Add csp header for all static files Header set CSP “Content-Security-Policy: default-src ‘none’; child-src ‘none’; script-src ‘unsafe-inline’ ‘self’; font-src ‘unsafe-inline’ ‘self'” # Add csp header for all images in directory /var/www/html/ {#} Header set CSP “Content-Security-Policy: default-src ‘/var/www/html/images; parent=”. “/var/www/html”; # Add csp header for all stylesheets in directory /var/www/html/css {#} Header set CSP “Content-Security-Policy: default-src ‘/var/www/html/css; parent=”. “/var/www/
Conclusion
The frame-ancestors directive can be used to configure CSP for a subresource of an HTML document. The following example shows how to define a CSP policy for the img element that applies only to images served from the local filesystem: 
Frame-ancestors can also be used with server-side include files to statically enforce CSP policies across all requests originating from a particular host or IP address. For example, the following code block will serve a CSP policy that denies access to fonts from any location other than the current working directory:
