dry alarm contact monitor?

[Marco Supino]

Hi,

What i did in order to monitor things which dont have any interface 
(lights, in my case), is using relays, connect them to RS232 cable, and 
then convert it to ethernet with somelike like Digi realport One, if you 
take CTS,DSR or DCD from a RS232 cable, and short them with the DTR 
signal, you get a "1" on the RS232, then connect it to a ethernet <-> 
RSR232 device (like the Digi device), and with SNMP get the status of 
the signals.

Marco.


Matt Sturtz wrote:
> Hello,
> 
> We have (like lots of other people, I'm sure) a cabinet at a colocation
> facility...  I want to have some intrusion detection (IE magnetic door
> contacts).  Anybody doing something like this with Nagios?
> 
> -Matt-
> 
> 
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