Apache web server allows access based upon different conditions. For example we can restrict access to url http://firstexample.com/ (mapped to /var/www/public/images directory) from 192.165.1.0/24 network.

Apache provides access based on different conditions such as domainname, IP address. Making a restriction on the basis of IP address we make changes in the apache configuration file as below:

Configuration for Centos/Fedora

Open httpd.conf file:-

nano /etc/httpd/conf/httpd.conf

Configuration for Debian/Ubuntu

Open apache2.conf file:-

nano /etc/apache2/apache2.conf

Now for rectricting by IP we add following code in the above file:

<Directory /path/of/folder>
            Order deny,allow
            Deny from all
            Allow from 192.165.2.1
</Directory>

If we want to allow access to IP begining with 192 with IP address with a specific pattern than we will write

Allow from 192

Now save file and restart apache web server:

apache2 services restart (ubuntu)
/etc/init.d/httpd restart (centos)