Local virtual machine, ubuntu16.4, uses the following command to open the port
sudo iptables-I INPUT-p tcp-- dport 9000-j ACCEPT
then use netstat-an | grep 9000 check that the port is not open
Local virtual machine, ubuntu16.4, uses the following command to open the port
sudo iptables-I INPUT-p tcp-- dport 9000-j ACCEPT
then use netstat-an | grep 9000 check that the port is not open
the port allowed by iptables and whether a program occupies / listens on this port are two different things.
netstat can only show the port on which a program is using or listening
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