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A service typically consists of a single SSH port redirection and a local client to access it. It may consist of several redirections, some
or all of which may have clients associated with them.
An example is the Dell RAC service. The first redirection is for the HTTPS connection to the RAC server. It has a client associated
with it (web browser) that is launched immediately upon clicking the button for this service.
The second redirection is for the VNC service that the user may choose to later launch from the RAC web console. It automatically
loads in a Java client served through the web browser, so it does not need a local client associated with it.
On the Add Service screen, you can click Add as many times as needed to add multiple new port redirections and associated clients.
FIGURE 7-12. EDIT SERVICE SCREEN
You may also specify Advanced port redirection options:
Enter the local address to bind to when creating the local endpoint of the redirection.
It is not usually necessary to change this from localhost.
Enter a local TCP port to bind to when creating the local endpoint of the redirection.
If this is left blank, a random port will be selected.
NOTE: SDT Connector can also tunnel UDP services. SDT Connector tunnels the UDP traffic through the TCP SSH redirection, so in
effect it is a tunnel within a tunnel. Enter the UDP port on which the service is running on the host. This will also be the local
UDP port that SDT Connector binds as the local endpoint of the tunnel. For UDP services, you still need to specify a TCP port
under General. This will be an arbitrary TCP port that is not in use on the gateway. An example of this is the SOL Proxy service.
It redirects local UDP port 623 to remote UDP port 623 over the arbitrary TCP port 6667.
CHAPTER 7: SSH TUNNELS AND SDT CONNECTOR
