Our goal for the future of PowerShell Remoting Protocol (PSRP) is to funnel it over the SSH (Secure SHell) protocol. This will enable bi-directional PowerShell Remoting between Windows, macOS, and Linux. On Windows, this work is dependent on our Win32 port of OpenSSH. On Linux, this work will leverage the existing, ubquitious OpenSSH client/server.
This work includes integration with Enter-PSSession, New-PSSession, and Invoke-Command (more information in this RFC). Also, see this related RFC.
While PowerShell Remoting (PSRP) over OpenSSH is our plan for the future of PowerShell remoting, we also recognize the difficulty in deploying new servers (e.g. OpenSSH) to existing Windows Server deployments in the enterprise.
Therefore, for macOS/Linux -> Windows remoting scenarios, our goal is to enable existing remoting cmdlets (e.g. Enter-PSSession, New-PSSession, and Invoke-Command) using the traditional WSMan protocol. This currently works for basic authentication as well as for NTLM-based authentication from (only) Linux environments.