A machine behind a modem...

[Thibault Genessay]

>>     *Rodrigo Maceno
>>     Hello,
>>     I have a machine, with a false IP, and with Internet access by a
>>     modem adsl. I would like to know how I get check the disk space, the
>>     total process, for example, of this machine with a real IP (modem)
>>     and a false IP (machine). Could anyone help me?
>> 
>>     Thanks,
>>     Rodrigo.
>> 
>>     PS: Sorry by my english... :/
Giles Coochey top posted:
> You will need to forward a port of some form (SNMP for instance) from 
> the modem to the system.
>  
> Check the modems documentation on port forwarding and work out which 
> port you want to forward, which will depend on how you want to check 
> these services.
>  
> If you're forwarding a port you may want to use a check plugin that has 
> both encryption and authentication.
> 

You can also configure it the other way around: have your machine tell 
your nagios system how well it behaves with passive checks. This is 
especially interesting if your dsl modem does not have a static IP 
adress. You can schedule the check with cron (linux) or the task 
scheduler (windows) and send your results to your Nagios server with 
send_nsca (which is part of NC_Net under windows; I don't recall where 
it can be found under linux though). Indeed, this means that your Nagios 
server is accessible from the outside (that is, behind - or being - a 
configurable firewall) so Giles' security recommendations still apply.

-- 
Thibault GENESSAY
ALIADIS
www.aliadis.fr
Tel.  +33 4 72 13 90 40
Fax   +33 4 74 22 00 09

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