I have embedded FreeNAS, version 8.2 beta. Now I would like to install openvpn, of course persisting between updates.
I have managed to get the program itself persist by using
mount -wu /
pkg_add -r openvpn
mount -ro /
Also I got the the openvpn_enable="YES" line to persist by editing /conf/base/etc/rc.conf
My problem is to persist the /usr/local/etc/openvpn folder with therein my openvpn.conf configuration and key files. How can I persist those?

openvpna lot, there seems to beopenvpn_configfiledirective that you probably use in/conf/base/etc/rc.conf... But I'm completely unsure if this gets you any further as I don't know FreeNAS' update process. – sr_ May 23 '12 at 8:22