In an Active Directory environment, Kerberos provides assurance that the remote device is trusted. Secure Sockets Layer (SSL) isn’t required to ensure that data is encrypted across the wire.

Before data is sent to a remote device, it is serialized and encrypted. Windows Server is configured out-of-the-box with an HTTP WinRM listener. WinRM is the protocol behind PowerShell Remoting, which allows cmdlets and scripts to securely run on remote devices, with the results being sent back to the originating PowerShell console. Windows Remote Management (WinRM) is Microsoft’s implementation of WS-Management, a SOAP-based protocol that can traverse firewalls and is used to manage infrastructure devices and operating systems from different vendors. Anywho - I have a bunch of boxes now and am really missing the MMC if someone could provide an answer or verification.In today’s Ask the Admin, I’ll show you how to configure a Windows Remote Management (WinRM) HTTPS listener using a self-signed certificate. I imagine Windows Admin Center is the next logical answer though I do not have a working gateway service. I know there are numerous commands vis netsh or PowerShell or GPO, many of which I'm using so I'm not entirely in the dark or unable to manage th ese, but I'm wondering if the MMC is now entirely unsupported/incompatible, or if there is some configuration option I've not toggled which sorts the MMC error I am seeing. I can connect to these core versions of Windows Server 2016 to visually audit or quickly toggle unrelated rules on or off in mass using the MMC firewall tool but I've thus far been unable to do so for the new core Windows Server 2019 servers. I long ago scripted out firewall configurations for each server role using NETSH ADVFIREWALL and all of that is good, no problems. I'm in the process of migrating all services across the operation from core installs of Windows Server 2016 to core installs of Windows Server 2019. I have tried very hard to find an answer to this out here before creating a new post, so apologies I'm recreating an already spun wheel.

Windows firewall remote management