Open port on ubuntu 16.04
Solution 1:
To allow a port
sudo ufw allow 3306
if its ufw is not installed is probably iptables
sudo iptables -A INPUT -m state --state NEW -m tcp -p tcp --dport 3306 -j ACCEPT
To allow a port
sudo ufw allow 3306
if its ufw is not installed is probably iptables
sudo iptables -A INPUT -m state --state NEW -m tcp -p tcp --dport 3306 -j ACCEPT