I just upgraded my aging Netgear router to DD-WRT, and I'm wanting to use the built-in OpenVPN Server component to service my home's private single subnet.
So I have this setup: [public-Internet]----[dynamic dns host]<---ISP--->[DD-WRT/OpenVPN-Server router 18.104.22.168 with home private subnet 192.168.0.0/24 clients]
I want to be able to securely use my home Internet connection and securely access my home private subnet machines when I am out on public Internet or unsecured Wifi.
My DD-WRT has the ability to be an OpenVPN server.
So far, many of the guides I've read seem to want the OpenVPN clients to have a private IP that is different than my single private subnet's address. A lot of them appear to want to point you to something like 10.x.x.x for client IPs.
Is that actually a requirement for this to work?
Is that 10.x.x.x type network an actual physical subnet that I must have a second router for, or is that a virtual subnet that my DD-WRT's OpenVPN Server would 'create' for itself?
Or can I do all of this with the single private subnet that I physically have?
Thanks, in advance, for your insight into my initial foray into setting up an OpenVPN.