I am trying to unblock an IP from which I was doing some tests. I have followed the tutorials on the net:
$ sudo /etc/init.d/denyhosts stop $ sudo vim /etc/deny.
Nothing worked but Answer by Oleksandr Shmyheliuk
Used following two commands
iptables -L -n -v | grep 49.33.135.137
if there is output then use following command
iptables -D INPUT -s 49.33.135.137 -j DROP