This is similar to Unable to Share Data between Amazon EC2 Instances for Windows
However in my case I am trying to connect from an external machine to a shared folder on an EC2 Windows 2012 machine.
I've enabled sharing as far as I can tell and opened TCP port 445 in a security group, but I can't seem to connect. Even running a plain
telnet my-ec2-ip 445
from an IP that should be within the security group times out without a connection.
I know this isn't necessarily the most recommended way to get files from my EC2 instance, but I need to do this from a tool that has very limited connectivity options and this may be my best bet. What might I be missing that would let this connection work?