Connection to Workgroup computer via RDWEB

Hello,

I have connection broker on WS2012 R2 and use this for connection via Internet Explorer (RDWEB) to some domain computers from Internet.

Is possible connect via RDWEB to standalone/nondomain (Workgroup) computers when this computers is in the same IP subnet as domain computers ?

If yes, how configuration change on connection broker is necessary ?

Thanks,

Snake AG