Possible to adjust the uPnP session lifetime?

[tyrelever]

Hi all.
I am wondering if it is possible to adjust, or shorten the time a uPnP mapping exists for?  Ideally I would like the ports to be de-mapped within a reasonable time after the ports are no longer required whether by monitoring of traffic over the port or an arbitrary timescale set by the administrator.

Is there a mechanism for this?

[tyrelever]

Hi All,

Anyone at all?