AWS IoT Device Management enhances Secure Tunneling with new multiplexing capability, supporting multiple connections to a single device over a secure tunnel
AWS IoT Device Management customers use Secure Tunneling to securely access and troubleshoot remote devices located behind a restricted firewall. Now, customers can make concurrent client connections to a single device over a secure tunnel using the new multiplexing capability. Multiplexing enables customers to perform more advanced device troubleshooting, such as modifying parameters via a web application on the device while simultaneously issuing remote shell commands to verify the device is working properly.
Source:: Amazon AWS