Users Guide

Configuring and Using Serial Over LAN 201
To initiate a SOL session, attach to iDRAC6 through SSH/Telnet which takes
you to iDRAC6 command line console. Then enter connect at the dollar
prompt.
See "Installing Telnet or SSH Clients" on page 75 for more information about
using Telnet and SSH clients with iDRAC6.
Model for the SOL Proxy
Telnet Client (port 623)  WAN connection  SOL Proxy 
iDRAC6 server
When the SOL Proxy communicates with the Telnet client on a management
station, it uses the TCP/IP protocol. However, SOL proxy communicates with
the managed server's iDRAC6 over the RMCP/IPMI/SOL protocol, which is a
UDP-based protocol. Therefore if you communicate with your managed
system's iDRAC6 from SOL Proxy over a WAN connection, you may
experience network performance issues. The recommended usage model is to
have the SOL Proxy and iDRAC6 server on the same LAN. The management
station with the Telnet client can then connect to the SOL Proxy over a WAN
connection. In this usage model, SOL Proxy will function as desired.
Model for Redirecting SOL Over IPMItool
IPMItool  WAN connection  iDRAC6 server
The IPMI-based SOL utility, IPMItool, uses RMCP+ protocol delivered
using UDP datagrams to port 623. iDRAC6 requires this RMCP+ connection
to be encrypted. The encryption key (KG key) must contains characters of
zero or NULL that can be configured in iDRAC6 Web GUI or in iDRAC6
Configuration Utility. You can also wipe out the encryption key by pressing
the backspace key so that iDRAC6 will provide NULL characters as the
encryption key by default. The advantage of using RMCP+ is improved
authentication, data integrity checks, encryption, and the ability to carry
multiple types of payloads. See "Using SOL over IPMItool" on page 204 or the
IPMItool website for more information:
http://ipmitool.sourceforge.net/manpage.html.