Identify VMM ports and protocols
Important
This version of Virtual Machine Manager (VMM) has reached the end of support. We recommend you to upgrade to VMM 2022.
As part of your System Center Virtual Machine Manager (VMM) deployment, you need to allow access for the ports, and protocols that the VMM server and components will use. It's important to plan this in advance. Some of the port settings are configured in VMM setup, and if you want to modify them after you set up VMM for the first time, you'll need to reinstall to do so.
Set up exceptions
- Identify where you need to create firewall exceptions, in accordance with the table below.
- On the server you identify, select Start > Next > Administrative Tools > Windows Firewall with Advanced Security.
- In the Windows Firewall with Advanced Security on Local Computer pane, select on Inbound Rules.
- In Actions, select New Rule.
- In the New Inbound Rule Wizard > Rule Type, select Port, and then select Next.
- In Protocol and Ports, specify the port settings in accordance with the table below and continue in the wizard to create the rule.
Port and protocol exceptions
| Connect | Port/protocol | Details | Configure |
|---|---|---|---|
| VMM server to VMM agent on Windows Server-based hosts/remote library server | 80: WinRM; 135: RPC; 139: NetBIOS; 445: SMB (over TCP) | Used by the VMM agent Inbound rule on hosts |
Can't modify |
| VMM server to VMM agent on Windows Server-based hosts/remote library server | 443:HTTPS | BITS data channel for file transfers Inbound rule on hosts |
Modify in VMM setup |
| VMM server to VMM agent on Windows Server-based hosts/remote library server | 5985:WinRM | Control channel Inbound rule on hosts |
Modify in VMM setup |
| VMM server to VMM agent on Windows Server-based hosts/remote library server | 5986:WinRM | Control channel (SSL) Inbound rule on hosts |
Can't modify |
| VMM server to VMM guest agent (VM data channel) | 443:HTTPS | BITS data channel for file transfers Inbound rule on machines running the agent The VMM guest agent is a special version of the VMM agent. It's installed on VMs that are part of a service template and on Linux VMs (with or without a service template). |
Can't modify |
| VMM server to VMM guest agent (VM control channel) | 5985:WinRM | Control channel Inbound rule on machines running the agent |
Can't modify |
| VMM host to host | 443:HTTPS | BITS data channel for file transfers Inbound rule on hosts and VMM server |
Modify in VMM setup |
| VMM server to VWware ESXi servers/Web Services | 22:SFTP Inbound rule on hosts |
Can't modify | |
| VMM server to load balancer | 80:HTTP; 443:HTTPS | Channel used for load balancer management | Modify in load balancer provider |
| VMM server to remote SQL Server database | 1433:TDS | SQL Server listener Inbound rule on SQL Server |
Modify in VMM setup |
| VMM server to WSUS update servers | 80/8530:HTTP; 443/8531:HTTPS | Data and control channels Inbound rule on WSUS server |
Can't modify from VMM |
| VMM library server to Hyper-V hosts | 443:HTTPS | BITS data channel for file transfers Inbound rule on hosts - 443 |
Modify in VMM setup |
| VMM console to VMM | WCF:8100 (HTTP); WCF:8101 (HTTPS); Net.TCP: 8102 | Inbound rule on VMM console machine | Modify in VMM setup |
| VMM server to storage management service | WMI | Local call | |
| Storage management service to SMI-S provider | CIM-XML | Provider-specific | |
| VMM server to Baseboard Management Controller (BMC) | 443: HTTP (SMASH over WS-Management) | Inbound rule on BMC device | Modify on BMC device |
| VMM server to Baseboard Management Controller (BMC) | 623: IPMI | Inbound rule on BMC device | Modify on BMC device |
| VMM server to Windows PE agent | 8101:WCF; 8103:WCF | 8101 is used for control channel, 8103 is used for time sync | Modify in VMM setup |
| VMM server to WDS PXE provider | 8102: WCF | Inbound rule on PXE server | |
| VMM server to Hyper-V host in untrusted/perimeter domain | 443:HTTPS (BITS) | BITS data channel for file transfers Inbound rule on VMM server |
|
| Library server to Hyper-V host in untrusted/perimeter domain | 443:HTTPS | BITS data channel for file transfers Inbound rule on VMM library |
|
| VMM server to Windows file server | 80: WinRM; 135: RPC; 139: NetBIOS; 445: SMB (over TCP) | Used by the VMM agent Inbound rule on file server |
|
| VMM server to Windows file server | 443:HTTPS | BITS used for file transfer Inbound rule on file server |
|
| VMM server to Windows file server | 5985/5986:WinRM | Control channel Inbound rule on file server |
Note
In addition to the above ports, VMM relies on the default dynamic port range for all its communication with Hyper-V hosts, file servers, and library servers. Learn more about the dynamic port range. We recommend that you reconfigure the firewalls to allow traffic between servers in the dynamic port range of 49152 through 65535.
Note
System Center Virtual Machine Manager uses NTLM authentication protocol to perform management operations. Using Kerberos authentication protocol isn’t recommended as it may break a few VM operations.
Next steps
You can modify some of these ports and protocols during VMM installation.
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