To setup basic authentication in Apache first create a .htaccess file in your website root folder or in specific directory and add following code:
AuthType Basic AuthName "Secure Content" AuthUserFile /home/myuser/public_html/.htpasswd require valid-user
Now we create users in .htpasswd as defined in .htaccess file. We can add user and password either in plain text or md5 encrypted.
Adding password in plain text format
htpasswd -c /home/username/public_html/.htpasswd username
Adding password with md5 crypt format
htpasswd -cm /home/username/public_html/.htpasswd username
Configure Apache to allow .htaccess Authentication
By standard Apache doesn’t allow to use of .htaccess, So we also need to upgrade below settings in our httpd.conf to allow .htaccess based authentication.
From: AllowOverride none To: AllowOverride AuthConfig
AuthConfig will allow only authentication in .htaccess, other setting will be ignored. To allow all setting defined in .htaccess file use “All” in place of AuthConfig”.
Restart Apache to test Setup
After making any changes in Apache configuration file , we need to restart Apache web service.
service httpd restart