OpenVPN for 50000 clients. Is it possible?

pomoev

Hello, guys.
I'm sorry if this question has already been discussed but i couldn't find anything helpful.

I know that there are lots of payed VPN-services based on OpenVPN. This means that somebody has done vpn-server sizing and has information about real connections limits.
I would like to now, what is the real cost of one connection on server side? How many connections may be served by 1 core? What amount of memory is consumed by 1 connection? And does OpenVPN scale over 8-12-24 cores linearly?

Thanks in advance.

Traffic

You may have a better response if you ask this in the OpenVPN Developer mailing list.

AFAIK, OpenVPN-CE is a single threaded process and does not scale over cores.
It is possible to host multiple instances and set their affinity but that is all, at this time.

innogen

Traffic wroteYou may have a better response if you ask this in the OpenVPN Developer mailing list.

To: pomoev

NO, don't follow Traffic's advice and post your questions on the OpenVPN developers' mailing list. It's only for people who develop OpenVPN software, fix bugs or add new features.

If you really have to, then please post your questions on the OpenVPN users' mailing list whose URL is https://lists.sourceforge.net/lists/listinfo/openvpn-users

Before you post your questions there, please re-phrase your question "what is the real cost of one connection on server side?". It's awesomely ambiguous and you may not get the answers you need.

I have known financial institutions and IT companies that have more than 50,000 clients: JP Morgan, Citibank, HSBC, Adobe, Microsoft, Apple, IBM, AMD, Samsung, etc... However they don't use OpenVPN straight from the box. They customize it.

There's a Dutch government agency that uses a modified version of OpenVPN for its more than 10,000 staff.

Traffic

innogen wroteyou really have to, then please post your questions on the OpenVPN users' mailing list

Sure .. My mistake.