I went to security group and add the rule for tcp 21
But when use this tool to check the port, still say is closed.
I know the tool works, because if I remove the line for http, then say port 80 is closed.
So why even when add the port to the security group still appear as closed?
EDIT: The FileZila server is running but still the port say is close on the public ip. Using FileZila client direct on the amazon machine I can connect to localhost. But from outside using the public ip I cant.
using netstats -an
and netstats -ab
TCP [::]:21 myserver:0 LISTENING [FileZilla Server.exe] TCP 0.0.0.0:21 myserver:0 LISTENING [FileZilla Server.exe]