check for the absence of a service

[Kyle Dippery]

Is there an easy way to use nagios to check for the absence of a
service?

I want to have nagios monitor SMTP and a few other services on hosts
that aren't supposed to be running them, and tell me if they
suddenly get turned on.

Is there a plugin for this, or a way to trick an existing plugin to
make it work?  I suppose if nothing else I can write a wrapper for
check_smtp or check_tcp to swap the OK and CRITICAL return values,
but it'd be much easier if someone else has already done it...

Cheers,
Kyle
-- 
Kyle Dippery
Engineering Computing Services      Phone: (859) 257-1346
280 FPAT  0046                      Fax:   (859) 323-3848

UK - One Great Place to Work

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