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18 Accessing Remote Desktop using VNC on Dell PowerEdge Servers and MX7000 Modular Infrastructure
To enable TLS/SSL encryption on the iDRAC, set the ‘SSL Encryption’ value in iDRAC to Auto-Negotiate, or
a specific minimum key length, 128-bit or higher, 168-bit or higher, or 256-bit or higher. For more information
about configuring iDRAC VNC settings by using the GUI, see Configuring VNC by using the iDRAC GUI. For
more information on configuring settings using the RACADM command line, see Configuring VNC by using
RACADM CLI.
4.3.1 Installing and configuring the ‘ssltunnel’ application
To use ssltunnel:
1. Download ‘ssltunnel’ from http://www.stunnel.org/downloads.html.
2. Install ‘stunnel’ and start ‘stunnel GUI start’ from the Program menu. Stunnel will start in background
and can be located in Windows taskbar with the following icon:
3. Edit the stunnel configuration:
a. Right-click stunnel and select Edit Configuration. This will open the stunnel.conf text file for
editing.
Edit stunnel configuration
b. Add a configuration entry in the stunnel.conf file for the connection to the iDRAC VNC Server
similar to the following example and save the file. In the lines below, substitute the iDRAC IP and
VNC port in place of 198.51.100.215:5901I, and an available local port in place of 5930.
[VNC-iDRAC] client = yes
accept = 127.0.0.1:5930
connect =
198.51.100.215:5901