Internal network for guests on the same host?

[Faize]

Is it possible to set up an internal network so that if VMs A and B are on the same host and A tries to access B (or vice versa), all network traffic will be handled internally by ESXi without needing to go upstream?

[schepp · Accepted solution]

Hi,

this is the default behaviour when two VMs are on the same portgroup and in the same VLAN.

Traffic won't leave the vSwitch in this case.

If you want the VMs only isolate the VMs from the outside network, you can create a new portgroup for them and don't add any physical network adapters to that portgroup.

That way the VMs can only communicate with each other.

Tim