[rescue] A Question about Snap Servers

Carl R. Friend crfriend at rcn.com
Thu Aug 5 07:29:37 CDT 2004

   On Tue, 3 Aug 2004, Steve Sandau wrote:

> > Well, sure, but I was able to notice patterns, which caused me
> > to find out someone was trying to hack into my box scanning ports
> > (it went "bzzzt, pause, bzzzt, pause, bzzzt, pause..." for a long
> > time. ;^)
> Pretty cool. That is just the kind of thing I thought would be
> helpful.  I didn't realize it might be so easy to do that.

   That's really the same thing as using a plain old AM radio as a
troubleshooting aid with certain types of (really) old iron.  You'd
be amazed how much the resulting audio can tell you (machine in tight
loop, performing heavy calculation, even where in memory a program
might be hitting (if you can get the antenna close enough)).  Certain
diagnostics sound distinctive enough that one can identify what's
being tested at any given instant just by listening.

| Carl Richard Friend (UNIX Sysadmin)            | West Boylston       |
| Minicomputer Collector / Enthusiast            | Massachusetts, USA  |
| mailto:crfriend at rcn.com                        +---------------------+
| http://users.rcn.com/crfriend/museum           | ICBM: 42:22N 71:47W |

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