Tavve zoneranger User Manual page 94

When the Ranger Gateway receives the initial TCP connection request for a Telnet or SSH
connection, it will check the Proxy Access Control configuration to verify that the request should be
allowed, then will consult the Proxy Map service in order to identify a ZoneRanger that is able to
relay the request to the target device. The request is then forwarded to the selected ZoneRanger,
which in turn, establishes a TCP connection to the target device. Once this TCP connection is
established, the ZoneRanger will inform the Ranger Gateway, and the Ranger Gateway will
complete the establishment of the initial TCP connection (i.e. the connection between the
management application and the Ranger Gateway). From this point on, the Ranger Gateway and
selected ZoneRanger will relay Telnet or SSH data between the management application's TCP
connection to the Ranger Gateway and the ZoneRanger's TCP connection to the target device, until
one of the connections is disconnected.
The following figure illustrates how PuTTY, a freely available Telnet/SSH client application, can be
used to establish an SSH session with a managed device via GVI or RGVI.
Figure 29-2. Ranger Gateway with PUTTY with GVI or RGVI
The steps to establish a connection, in this case are:
1. Enter the IP address or hostname of the target device.
2. Select the protocol to be used (SSH in this example).
3. Verify the port value. PuTTY will automatically set this value based on the selected
protocol. You may need to modify this value if the target device uses a non-standard port
for SSH or Telnet.
4. Click the Open button to establish the SSH session.
ZoneRanger 5.5 User's Guide 94