The IPMI-based SOL utility and IPMItool uses RMCP+ delivered using UDP datagrams to port 623. The RMCP+ provides improved authentication, data integrity checks, encryption, and the ability to carry multiple types of payloads while using IPMI 2.0. For more information, see http://ipmitool.sourceforge.net/manpage.html.
The RMCP+ uses an 40-character hexadecimal string (characters 0-9, a-f, and A-F) encryption key for authentication. The default value is a string of 40 zeros.
An RMCP+ connection to iDRAC must be encrypted using the encryption Key (Key Generator (KG)Key). You can configure the encryption key using the iDRAC Web interface or iDRAC Settings utility.
To start SOL session using IPMItool from a management station: