Is 768MB of RAM enough for an OpenVPN server for a few clients

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1

Hi,

I’m looking to deploy OpenVPN on some cheap VPS services for my own personal use. I was wondering if 768MB of RAM was enough to host an OpenVPN server for a handful of clients?

2

openvpn moves data around. it doesnt really store any.

768 is fine. (i suspect you could probably do it in 128 if you were careful)

3

Yes. You’re even able to run OpenVPN on OpenWRT routers with far less RAM.

4

I have a VPS running Debian with openvpn, pihole, dnscrypt dockers and firewall duty. It’s using 722MB RAM right now after 90 days uptime. You’ll be fine.

Edit: another machine is running openvpn in a docker container, it’s using 3.74MB while uploading at 50mbit.

5

In terms of sizing if you have about 1MB per concurrent client that will be more than enough. In your case OpenVPN will likely use less than 20MB.

6

It does buffer though. But if your buffer is 200Mb deep you probably already dropped connection.