I've got a router running DD-WRT and I'd like to enable the OpenVPN feature on it. But, I'm a little confused with the configuration mostly in the category of "additional config". While I've found a few blog posts on configs, it's unclear what the defaults are and if they're actually sane defaults for my (super simple) VPN needs. Has anyone looked into this and have recommendations on what good defaults are there? I mostly want to connect with devices/machines running Network Manager, so I have a good deal of configurability available.

Thanks,
Ted