Information about using .htaccess

.htaccess – (hypertext access) additional configuration file for the Apache web server and similar servers.
In order for the file to be processed by the Apache server, the “AllowOverride All” option must be in the configuration file for the specified directory.

I will give below an example of some parameters.
Denying access to all files:

deny from all

Allow access from a specific IP (you can specify a few separated by a space):

order deny allow
deny from all
allow from 192.168.5.5 192.168.4.1

Deny access from a specific IP:

order allow deny
allow from all
deny from 192.168.5.5 192.168.4.1

Denying access to a specific file:

<Files file.php>
order allow,deny
deny from all
</Files>

Restricting access to IP addresses to all files with names beginning with “text…”:

<Files text*>
Require local
Require ip 192.168.5.5 192.168.3.5
# 192.168.5.5 comment
</Files>

Directory password:

AuthName "Hello"
AuthType Basic
AuthUserFile /home/user/.htpasswd
require valid-user

Password for 1 file:

<Files file.php>
AuthName "Hello"
AuthType Basic
AuthUserFile /home/user/.htpasswd
</Files>

Password for a group of files:

<Files "\.(cfg)$">
AuthName "Hello"
AuthType Basic
AuthUserFile /home/user/.htpasswd
</Files>

If the site engine displays its error of opening the page instead of requesting a password, then add the following line to the main .htaccess file:

ErrorDocument 401 default

Redirect to another url:

Redirect / http://www.site.com

Generator .htpasswd: www.htaccesstools.com/htpasswd-generator
You can generate a file from the system command line using the htpasswd utility, in Ubuntu it is installed with the apache2-utils command:

sudo apt install apache2-utils

See also my article:
Access Control Apache2

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