FTP closed

[tiagozanchettin]

HTTP (port 80 is open)
FTP (port 21 is closed)
SMTP (port 25 is open)
POP3 (port 110 is open)
IMAP (port 143 is open)
MySQL (port 3306 is open)
DNS (port 53 is open)

I changed out of my cloud, after that no longer works ftp 

[ahsan]

Have you tried adding rules in iptables?
try this command with root

iptables -A INPUT -p tcp -m tcp --dport 21 -j ACCEPT