Block an IP address in Drupal 7

1. Click the Configuration link on the top navigation bar.
   
   



2. Click the 'IP address blocking' link.
   
   



3. Type in the text box, the IP address you want to block.
   
   



4. Click the 'Add' button to add the IP address to the block list.
   
   



5. The IP address is now blocked.
   
   



6. You may see all blocked IP addresses under 'BLOCKED IP ADDRESSES.'