Copy the code and past in .htaccess file and change the ip with you.
RewriteCond %{REQUEST_URI} ^/(index.php/)?admin/ [NC]
RewriteCond %{REMOTE_ADDR} !^196.196.196.196
RewriteRule ^(.*)$ http://%{HTTP_HOST}/ [R=302,L]
Example:
RewriteCond %{REQUEST_URI} ^/(index.php/)?youradminname/ [NC]
RewriteCond %{REMOTE_ADDR} !^ change here is your ip(196.196.196.196)
RewriteRule ^(.*)$ http://%{HTTP_HOST}/ [R=302,L]
Engineer Sushil Kumar Sushil Kumar Profile