User guide

104 DSView Installer/User Guide
Appendix B: TCP Ports
When the DSView management software window is launched, the Node Manager will become
active. Node Manager will attempt to establish a Security Support Provider Interface (SSPI)
Messenger Class session using TCP/IP over port 2068 to the DSAuth Server (Authentication
Service). First, Node Manager will use the current NT/2000 cached credentials to establish the
session. If the cached credentials have the proper permissions, the browse list is returned from the
DSAuth Server over TCP/IP port 2068. Note that the DSView management software window
caches this list. Using the refresh option will update the list from the DSAuth Server. If the session
is refused using the cached credentials, a pop-up dialog box will prompt for the proper username
and password.
Figure B.1: SSPI Messenger Class Session Establishment
After the browse list is returned to Node Manager, the user may double-click on a specific port to
initiate a KVM session with that port on the DS appliance. The DSView management software
contacts the DSAuth Server, which checks the permissions on the port again. If the logged in user
has permissions to the port selected, the DSAuth Server will establish a connection to the DS
appliance using TCP/IP port 8191. The DSAuth Server then tells the appliance to “listen” to port
8192 for a DSView management software connection if DES encryption is specified in the
DSView management software properties. If 3DES or 128-bit encryption is specified, port 2068
is used.