#language en
[[AMT]] > Serial-over-LAN
----
Serial-over-lan is part of [[AMT]]. It provides a (secure) way to connect to a remote computer, through a pseudo serial interface.

== Management Console ==

=== amtterm (and gamt) ===
''Here's a snapshot of gamt in action... looks like a regular terminal...'' It is not !
(amtterm is command-line based, gamt is X-Window [gtk], both are shipped in Gerd Hoffmann's [[http://www.klabs.be/~fpiat/linux/debian/packages/amtterm/|amtterm]] ).
 {{attachment:gamt.png}}

=== amttool ===
(amttool is part of amtterm package).

'''{{{AMT_PASSWORD=ComplexP4ssw00rd}}}'''

'''{{{export AMT_PASSWORD}}}'''

'''{{{amttool 192.168.0.10 info}}}'''

{{{
### AMT info on machine '192.168.0.10' ###
AMT version:  2.5.0
Hostname:     solid.paris.klabs.be
Powerstate:   S0
Remote Control Capabilities:
    IanaOemNumber                   0
    OemDefinedCapabilities          IDER SOL BiosSetup 
    SpecialCommandsSupported        PXE-boot HD-boot cd-boot 
    SystemCapabilitiesSupported     powercycle powerdown powerup reset 
    SystemFirmwareCapabilities      0
}}}
You could use on of the supported command, like {{{powerup}}} or {{{powercycle}}}.


'''{{{amttool 192.168.0.10 netinfo}}}'''
 {{{
Network Interface 0:
    DhcpEnabled                     true
    HardwareAddressDescription      Wired0
    InterfaceMode                   SHARED_MAC_ADDRESS
    LinkPolicy                      31
    MACAddress                      00-1a-6b-00-00-00
        DefaultGatewayAddress       192.168.0.1
        LocalAddress                192.168.0.10
        PrimaryDnsAddress           192.168.0.33
        SecondaryDnsAddress         0.0.0.0
        SubnetMask                  255.255.255.0
Network Interface 1:
    DhcpEnabled                     true
    HardwareAddressDescription      Wireless1
    InterfaceMode                   SHARED_MAC_ADDRESS
    LinkPolicy                      0
    MACAddress                      00-13-e8-00-00-00
        DefaultGatewayAddress       0.0.0.0
        LocalAddress                0.0.0.0
        PrimaryDnsAddress           0.0.0.0
        SecondaryDnsAddress         0.0.0.0
        SubnetMask                  0.0.0.0
}}}

== Managed Client ==

It's assumed you have already enabled the Managment Engine (ME) on the computer (in SMB mode). see [[AMT/SmallBusiness]].


=== inittab ===
The following udev rules /etc/udev/rules.d/``[[attachment:z25_persistent-serial.rules]]
will ensure the device is always named /dev/ttySOL

On a typical client, you will want to enable getty on the Serial-Over-LAN tty. Add the followin line in /etc/inittab.
{{{
# Example how to put a getty on a serial line (for a terminal)
#
T0:12345:respawn:/sbin/getty -L ttySOL 115200 vt100-nav
}}}

=== grub ===

Add following lines to /etc/default/grub:
{{{
GRUB_CMDLINE_LINUX="console=tty0 console=ttyS4,115200n8"

GRUB_TERMINAL=serial
GRUB_SERIAL_COMMAND="serial --speed=115200 --port=0xf0e0 --word=8 --parity=no --stop=1"
}}}

and then run '''update-grub'''

=== lilo ===