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Chapter 15: Advanced Administration 
 
 
219
 
Connection Modes: Direct and Proxy 
About Connection Modes 
CC-SG offers three connection modes for in-band and out-of-band 
connections: Direct, Proxy, and Both. 
• 
Direct mode allows you to connect to a node or port directly, without 
passing data through CC-SG. Direct mode generally provides faster 
connections. 
• 
Proxy mode allows you to connect to a node or port by passing all 
data through CC-SG. Proxy mode increases the load on your CC-SG 
server, which may cause slower connections. However, Proxy mode 
is recommended if you are more concerned about the security of the 
connection. You need to keep the CC-SG TCP ports 80, 8080, 443, 
and 2400 open in your firewall.  
Note: Beginning with CC-SG 4.2, proxy mode supports encryption of 
KVM data when using Dominion KXII release 2.1.10 and higher. In 
this configuration, KVM data is encrypted according to the security 
setting in the KXII device. Encryption is not supported with devices 
other than Dominion KXII 2.1.10. 
• 
Both mode allows you to configure CC-SG to use a combination of 
Direct mode and Proxy mode. In Both mode, Proxy mode is the 
default, but you can configure CC-SG to use Direct mode when 
connections are made using client IP addresses in specified ranges. 
Note 1: When CC-SG is in Proxy or Both mode, you can give users 
access to virtual media on KXII devices. However, users can only 
use VKC in Proxy or Both mode. MPC is not supported in Proxy 
mode. 
Note 2: 
Some interfaces only work in Direct mode even though you 
configure CC-SG to use Proxy mode. These interfaces include ILO, 
RSA, DRAC, Web Browser and VMware Viewer. See 
About 
Interfaces
 
Configure Direct Mode for All Client Connections 
 
To configure direct mode for all client connections: 
1.  Choose Administration > Configuration. 
2.  Click the Connection Mode tab. 
3.  Select Direct mode. 
4. Click 
Update 
Configuration.