Joomla 4/5 User Manual
How do you password protect directories using htaccess?
This FAQ explains how to protect the Joomla! /administrator/ directory on Apache servers using the htpasswd utility. You can easily adapt these instructions to protect other directories. If you need help finding or creating your .htaccess file, start here.
Caveat (From Apache.org)¶
Basic authentication should not be considered secure for any particularly rigorous definition of secure. Although the password is stored on the server in encrypted format, it is passed from the client to the server in plain text across the network. Anyone listening with any variety of packet sniffer will be able to read the username and password as it goes across.
Remember that the username and password are passed with every request, not just when the user first types them in. So the packet sniffer need not be listening at a particularly strategic time, but just for long enough to see any single request come across the wire.
In addition to that, the content itself is also going across the network in the clear, and so if the website contains sensitive information, the same packet sniffer would have access to that information, even if the username and password were not used to gain direct access to the website.
Don't use basic authentication for anything that requires real security. It is a detriment for most users, since very few people will take the trouble, or have the necessary software or equipment, to find out passwords. However, if someone had a desire to get in, it would take very little for them to do so.
Basic authentication across an SSL connection, however, will be secure, since everything is going to be encrypted, including the username and password.
If you are unfamiliar with the Apache htpasswd utility, read the Apache Authentication and Authorization page first.
Check to be sure your site is configured to use .htaccess files. If not sure, ask your host.
Decide where to put your .htaccess file. Because Apache recursively searches all directories in a path for .htaccess files, the higher in your directory structure you place this file, the more directories it will control. If there is already an .htaccess file in the directory you choose, it's best to add the new code to it.
Decide where to store your .htpasswd and .htgroups files. These files should never be publicly accessible through the web. Below is an example directory structure showing good locations for each file. Note that the /auth/ directory in this example is not accessible from the web.
Create the .htpasswd and .htgroups files as explained in the official Apache HowTo referenced above.
If a .htaccess file already exists in the directory you have chosen, make a backup copy. If the file does not exist, create a new file with that name now. (Don't forget the dot at the beginning of the name.)
Add the following code to the .htaccess file. Adjust the example paths (marked in red) as needed for your server. Adjust the group name that you created in step 5 if it differs from the below example.
AuthUserFile /home/auth/.htpasswd AuthGroupFile /home/auth/.htgroups AuthType Basic AuthName "LWS" require group admins
If you cannot use the Apache htpasswd utility, there's a free .htaccess generator that creates the necessary files for you. You'll need to know the user name, password, and path. The script does the rest for you. Note that for more advanced configurations, such as the use of groups, you'll need to edit the resulting files.