This is a file is similar in nature to the hosts.deny file in that IP addresses can be input into the file. However, IP addresses that are input into this file will be allowed access to the nginx web server and prevented from being automatically added to the hosts.deny file (this will still occur if the login attempts from the same IP address are exceeded). This file should only be used as a last resort if denyhosts continually (and erroneously) adds your personal IP address to the hosts.deny file. An alternative is using [[This Is Your Brain On Informatics: Linux|aptitude]] to remove the denyhosts firewall; however, this is not recommended for a live server.