checking that ports are closed

[Subhendu Ghosh]

On Thu, 26 May 2005, michael dasilva wrote:

> does anyone know of a plugin or a way to check for open ports that
> were previously closed?
>

you could use check_tcp with negate.
check_tcp report CRIT on closed port, negate returns an OK based on the 
CRIT.

So if the port opens, you get a critical.


-- 
-sg


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