Re: Remote Management (was Re: Alert on LAN)

Terje Malmedal
2001-03-15T18:33:11Z

[Chip Salzenberg]
> IBM says, as quoted by Terje Malmedal:
>> With the latest release, Alert on LAN 2 now extends IT
>> capabilities to remotely manage and control their
>> networked PCs:
>>
>> Remote system reboot upon report of a critical failure
>> Repair Operating System
>> Update BIOS image
>> Perform other diagnostic procedures

> OK, fine... but: Where are the authentication and authorization?!
> Surely I'm not the only person to see in this "Alert On LAN 2" the
> potential for a security disaster. I know I will never buy anything
> that supports AOL2 until its security features are openly documented
> and testable.

Definitely scary possibilites there. I think the best we can
realistically hope for is that you can require a password to be sent
with each packet.

>> The feature I really need is to be able to reset the machine
>> remotely when Linux is hung.

> Some current PC motherboards support remote management via a serial
> line. Of course, you'll need software: The VA Cluster Manager (GPL'd
> - http://sourceforge.net/projects/vacm) can monitor and control any
> number of clients, limited only by the number of serial ports you can
> give it. VACM also includes optional client support for enhanced
> monitoring, e.g. of temperatures. I'm not sure which motherboards it
> supports, but I'm sure you can find current documentation. :-)

I am aware of some motherboards where you can configure the BIOS via
RS232. What I want is some way to actually reset a machine that is
hung. Currently we are using power-strips where we can switch on and
off individual plugs by telneting to the strip.

We also use Netra T1's from SUN. They have a small microprosessor
listening on the serial port. If you send the escape sequence #. it
will take over and allow you to reset or power-cycle the real
computer. Very cool stuff:
lom>version
LOM version: 2.1
LOM checksum: 7CA3
LOM firmware build Aug 6 1999 09:46:27
lom>help
The following commands are supported:

alarmon
alarmoff
check
console
environment
faulton
faultoff
help
poweron
poweroff
reset
show
version
lom>environment
LEDs:
faultled OFF
Alarm1 = OFF
Alarm2 = OFF
Alarm3 = OFF

Fans:
1 = OK speed = 74%
2 = OK speed = 74%
3 = OK speed = 74%

PSUs:
1 = OK

This functionality is what I hope Alert on LAN2 can give me.

--
- Terje
malmedal@usit.uio.no