If you do not want someone to attack the admin panel of your website you should create a .htaccess file in the administrator map. To restrict access to your site you can use the following options:

Option 1: restrict access to just one ip address

order deny,allow
deny from all
allow from 888.888.888.888
Check your ip address at:
http://whatismyipaddress.com/

Option 2: Password protect your admin panel by creating a .htaccess file

AuthType Basic
AuthName "Protected"
AuthUserFile /var/www/vhosts/yourdomain name.extension/httpdocs/administrator/.htpasswd
Require valid-user

make a .htpasswd file in the same directory with your password in it like this
admin:T77dhFWYWFJ

You can create the password with the following tool:
http://www.htaccesstools.com/htpasswd-generator/ 


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