Ports used by RU Server


RU Server uses two ports — TCP 5655 for Viewer-Server-Host communication and TCP 5670 for server administration.

Communication port

By default, RU Server communicates with the Viewer and Host through a single TCP port 5655:

Module Port Direction
RU Server TCP 5655 Inbound
Viewer TCP 5655 Outbound
Host TCP 5655 Outbound

For more information, see Integrating Remote Utilities with RU Server.

Administration port

You can remotely connect to a running RU Server from another computer using Administrator Console. By default, TCP port 5670 is used:

Module Port Direction
RU Server TCP 5670 Inbound
RU Server Administrator Console TCP 5670 Outbound

For more information, see Using Administrator Console.


You can change communication and administration ports in the RU Server Configuration dialog. If you change the default values, remember to update the corresponding port settings in Viewer, Host and RU Server Administrator Console.