I'm hoping to implement a VPN whereby about 200 concurrent users can log in to briefly access my network. I had a look at OpenVPN and this seemed excellent, but was hoping that there would be a less costly option on a per-concurrent-user basis.

I've no need for particularly strong security, and my only other requirement is that I would need to be able to add users in bulk via csv or similar.

EDIT

I will be running a FlexLM server on the machine, and the users will need to be able to download a licence key from that licence server. I was under the impression that remote users need to be on the same network as the licence server, hence the VPN. Please correct me if I'm wrong though.

The pricing on OpenVPN comes from www.openvpn.net/index.php/access-server/license-key.html where it says:

> 
> License Key:
> 
> 
> Each license key activates a specific
>  number of OpenVPN Clients connecting
>  to the Access Server. The free license
>  key is designed to get you up and
>  running and will activate (2) Clients.
>  You can purchase additional clients
>  for $5.00 / per client.
> 
> 
> 

Does anyone have any suggestions?