Secure host to host communication

SSH is available on every Linux server I know of.  This search https://www.google.com/search?q=SSH+point+to+point+redhat&ie=utf-8&oe=utf-8 lists a lot of info about setting it up.

I need to clarify my issue.  The web severs send traffic over port 7015 to the application servers using a custom app written by in house developers.     The servers will be used in AWS(Amazon Web Service).  AWS has load balancers that can encrypt the traffic via SSL on the port then send it to the application servers.  What needs to be done at the app level to decrypt that encrypted traffic and read it?  Is there a tool available that would help make this easier?

Using an ssh tunnel, there is nothing that needs to be done, the ssh tunnel encapsulate/encrypts/decrypts the data in an encrypted channel.
Functionality it is similar to a VPN connection for specific traffic, requests destined to port 7015.

You can initiate the connection from your side to the remote aws, using -R to open port 7015 on the aws server destined bak to port 7015 if the application server.

Or as referenced, suggested, aws ssh connection going to your side with-L 7015:localhost:7015.

In both cases, the aws application will reference localhost:7015 to connect to the application server.

AWS document clarified my issue