I read this awesome write up (https://www.howtogeek.com/64433/how-to-install-and-configure-openvpn-on-your-dd-wrt-router/) but I'm wondering, how I can go about creating a site-to-site VPN so that both 'sites' can access the remote resources?

I've Googled variations of 'DD-WRT Site to Site VPN' and came up with loads of results, most of which are [very] old (as seen in screenshots or instructions) and all have *wildly* different processes. And I'm not talking IP differences, but whether its configured via GUI or GUI & console or strictly console, not to mention the settings & configuration options used. I'm also worried that because I have various VLANs (also configured in DD-WRT) its adding a layer of complexity that's further confusing me.

Wasn't sure if someone has done this with a fairly recent build and would be willing to help share the process

http://www.dd-wrt.com/wiki/index.php/VPN_%28the_easy_way%29_v24%2B (and http://www.dd-wrt.com/phpBB2/viewtopic.php?t=147837)
http://www.dd-wrt.com/phpBB2/viewtopic.php?p=391635&highlight=#391635 (and https://forums.openvpn.net/topic7049.html)

Posted 7 years ago