Firewall Rules for Parallels RAS

http://kb.parallels.com/en/123255

http://blog.parallels.com/2014/07/15/firewall-requirements-2x-remote-application-server/

http://kb.parallels.com/en/123707

RDS Server

:!: Firewall rule names shown in title bars.

:!: Port 20001 TCP open on remote RDS Servers before adding to 2X console in Backup Servers or Terminal Servers.