User's Manual

Configuring and Using Serial Over LAN 149
NOTE: Each blade server only supports one active SOL session through SSH
or Telnet protocol.
NOTE: SSH protocol is enabled by default. Telnet protocol is disabled by
default.
7 Click Services to open the Services page.
NOTE: SSH and Telnet programs both provide access on a remote system.
8 Click Enabled on either SSH or Telnet as required. SSH is on by default.
9 Click Apply .
NOTE: SSH is recommended due to better security and encryption
mechanisms.
NOTE: SSH/Telnet session duration can be infinite as long as the timeout
value is set to 0. The default timeout value is 1800 seconds.
10 Enable iDRAC out-of-band interface ( IPMI over LAN ) by selecting
System → Remote Access → iDRAC → Network/Security → Services .
11 Check the Enable IPMI Over LAN option under IPMI LAN Settings .
12 Click Apply .
Using Serial Over LAN (SOL)
This section provides several methods to initialize a Serial-Over-LAN session
including a Telnet program, an SSH client, IPMItool, and SOL Proxy. The
purpose of the Serial Over LAN feature is to redirect the serial port of the
managed server through iDRAC into the console of your management
station.
Model for Redirecting SOL Over Telnet or SSH
Telnet (port 23)/ SSH (port 22) client ←→ WAN connection ←→ iDRAC
server
The IMPI-based SOL over SSH/Telnet implementation eliminates the need
for an additional utility because the serial to network translation happens
within the iDRAC. The SSH or Telnet console that you use should be able to
interpret and respond to the data arriving from the managed server's serial
port. The serial port usually attaches to a shell that emulates an ANSI- or