I'm not a networking guy, so I apologize if my question is dumb.
I have two Ubuntu machines setup on Amazon EC2. I need to "talk" from one to the other via port 9300. On my receiving machine, I ran the following from the command-line.
netstat -ntlup | grep 9300
On my client machine, I ran the following from the command-line.
telnet [otherIPAddress] 9300
After entering that command on my client machine, I see the following printed:
Trying [otherIPAddress]... Connected to [otherIPAddress]. Escape character is '^]'.
Then, I entered 'Hello World' at the command line. Immediately after pressing 'Enter', I see the following:
Connection closed by foreign host.
Why would I get this error? I really need to be able to get this connection running. For the life of me, I can't figure out why I can't communicate over it.