The remote host is running the GoToMyPC client.
Citrix GoToMyPC is a remote control software service that enables the user to operate their computer from another computer, over the Internet. Additionally, mobile device applications are available to remotely control the computer running GoToMyPC. This software uses a backchannel (viewed as an outgoing connection by your firewall) to communicate with the vendor's computers which then broker a connection between the GoToMyPC client and the computer.
Ensure that this tool is authorized according to corporate policies and guidelines.