You need to go through additional configuration steps when a
remote host is on a different network over a gateway or when a
firewall is between your PC and the remote host. These steps are
required because Xmanager is a server program and the
connection is established from the remote X application to
the local Xmanager.
A keep-alive option for an SSH connection is useful when the
firewall forces to disconnect idle sessions. Port-forwarding is
required for XDMCP connections when you are in a private network
and you connect to a remote host over a router. Once you have
configured port-forwarding on the router, you should configure
connection address for XDMCP connections.
To set a keep-alive option for an SSH connection in a firewall
Connect to the router and go to the port-forwarding page.
Forward external TCP ports 6000 ~ 6010 to the ports 6000 ~ 6010
of your Windows. For example, assumes that the IP address of your
PC is 192.168.1.2:
Save the configuration.
Note: Refer to the manual of your router to configure
the port forwarding.
To configure a connection address for XDMCP sessions:
Right-click on the session you want to configure a connection
address setting. RESULT: A menu appears.
Click Properties. RESULT: A Properties dialog box opens.
Click the General tab.
In the Connection Address area, select Use following
connection address check box.
In the Host box of the Connection Address area,
enter the IP address of the router.
In the Port Number box of the Connection Address
area, enter "6001". Note: This number is a router side
port number which is configured to perform port-forwarding from
router to PC.
Click the X Server tab.
In the Display Number area, clear the Allocate
display number automatically check box.
In the Display Number box, enter "1". Note:
This number comes from the port number "6001" which is configured
to perform port-forwarding from router to PC. If you subtract 6000
from the port number, the result will be the display