Apache2 : Basic Authentication2025/09/08

	Set Basic Authentication to limit access on specific web pages.
[1]	Username and password are sent with plain text on Basic Authentication, so Use secure connection with SSL/TLS setting, refer to here.
[2]	Configure Apache2. For example, set Basic Authentication to the directory [/var/www/html/auth-basic].

root@www:~#

apt -y install apache2-utils

root@www:~#

vi /etc/apache2/sites-available/auth-basic.conf

# create new

<Directory /var/www/html/auth-basic>
    SSLRequireSSL
    AuthType Basic
    AuthName "Basic Authentication"
    AuthUserFile /etc/apache2/.htpasswd
    require valid-user
</Directory>

# add a user : create a new file with [-c]

root@www:~#

htpasswd -Bc /etc/apache2/.htpasswd debian

New password:

# set password

Re-type new password:
Adding password for user debian

root@www:~#

mkdir /var/www/html/auth-basic

root@www:~#

a2ensite auth-basic

Enabling site auth-basic.
To activate the new configuration, you need to run:
  service apache2 reload

root@www:~#

systemctl reload apache2

# create a test page

root@www:~#

vi /var/www/html/auth-basic/index.html

<html>
<body>
<h1 style="width: 100%; font-size: 40px; text-align: center;">
Test Page for Basic Authentication
</h1>
</body>
</html>

[3]	Access to the test page from any client computer with web browser. Then authentication is required as settings, answer with a user added in [1].

[4]	That's OK if authentication is successfully passed and test page is displayed normally.

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