Apache access control allow origin how to#
Apache access control allow origin code#

You will want to consult the Apache docs and modify the code to suit your specific needs.If you are a web developer, I believe you have encountered a CORS error before during development when working with an API.

Apache access control allow origin how to#

Of course, these are just examples to show how to implement the correct access-control directives. Here is an alternate way of writing conditional rules for Apache access control: So any directives included inside of the second container will be executed only on Apache 2.4 and better. Or if the server is Apache 2.4+ we know that authz_core_module exists. So any directives included inside of the first container will be executed only on Apache 2.2. If the server is Apache 2.2 then we know that authz_core_module does not exist. htaccess or Apache configuration file, this code will detect the correct version of Apache and use the proper directives for access control. You can use the following code on any Apache server version 2.2 or 2.4+. In such case, the following conditional directives should give you a better idea. In some cases, you may not know which version of Apache you are using. Or, if you want to create a modular, plug-n-play snippet that can be added to any Apache version 2.2 or 2.4+, check out the conditional directives technique in the next section. Use only the code that applies to your version of Apache. Reminder: Do not use both 2.2 and 2.4 directives on the same server. Deny access to specific file # DENY ACCESS TO FILE Deny access based on IP address # DENY ACCESS TO IP ADDRESS Here a couple more examples to further illustrate the concept using Require/All. Notice that and Require all granted are required when doing anything more than either Require all granted or Require all denied (as shown in the above examples). Require all granted Deny access based on host name # DENY ACCESS TO EXAMPLE.COM

Require all denied Allow all requests # ALLOW ALL REQUESTS A workaround for this is to use Conditional Directives, as explained below. Important! Do not use 2.2 and 2.4 directives on the same server it may cause issues and/or errors. Here are some examples that compare the different syntax required depending on your version of Apache. To help with this, I’ve provided numerous examples below.

So basically, the rules to control access are different depending on your version of Apache. Changes in Apache 2.4Īpache 2.2 uses the authz_host_module to control access using directives like Deny, Allow, and Order.Īpache 2.4 uses also the authz_host_module for access control, but also uses the authz_core_module, which provides the new Require directive. Note: this topic is covered in the book on page 147, “Allow/Deny directives for Apache 2.4+” (in Chapter 7: Tighten Security). This tutorial explains the changes and then shares some examples to help you implement the best solution for your site. With Apache 2.4, there are changes to the directives that are used for access control. It is a common technique that I’ve discussed numerous times. For example, if you are getting hit with an attack from a specific range of IP addresses, you can add directives to block them based on the host address or other variables.

Throughout the book, I explain various techniques for controlling access to web pages.