Building a VPN custom network mesh-like thing (in the cloud)
I'm going to sound like a total dork here, but I'm just not that deep a networking guy.
I was thinking recently that it would be convenient if I could have my own ipv4/ipv6 space, mainly because then I could write one set of firewall rules and not have to add in random IPs every time I buy a new VPS.
But then I thought...could I do that with a VPN network on top of the normal ipv4 network? So imagine I have a dozen VPSes at a dozen providers because, well, I do. Can I have them all on my own private 10.x network and talk to each other on it?
I'd want any of them to be able to talk to any other (well, I'd layer firewall rules on top of that).
If so...how would I set that up?
do I need some sort of VPN concentrator? I'm assuming I can run it on a LEB. Can I make it HA? Because I'm assuming if it goes down, everything goes down.
I assume if I don't go across subnets I don't need to get into routers, though that probably isn't a big deal because every Linux VPS is potentially a router
Could I do DHCP on that? Can I have multiple IPs, like a floating IP?
Could I segment it with virtual firewall appliances...see...this is where things always go with me, to extreme complexity...
I'm used to the idea of VPNing into a box or VPNing into work, but not the idea of building a VPN network though maybe it's all the same and I'm just weak on my network fu, which I am.
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