What's the timeout value for connections in FIN_WAIT2 state

[Yusuf Goolamabbas]

Hi, According to this page
http://httpd.apache.org/docs/misc/fin_wait_2.html

FreeBSD from ver 2.0 onwards has a timeout for FIN_WAIT2 state, what is
the timeout for this state, is there a sysctl to control this

On a loaded mailserver running 4.7-stable, I am seeing a lot of
connections in FIN_WAIT2 state, and they don't seem to be going away
even after 0.5 hr, other than a reboot is there any to get rid of them.
My understanding is that lots of these FIN_WAIT2 states will just take
up space in kernel tables

Regards, Yusuf