I have previously used solutions similar to OpenVPN Access Server, but I don't remember their names.

We have used Cisco IOS Security.

I previously used Prisma Access by Palo Alto Networks but we did not renew the account.

We have used other solutions in the past. We did have Cisco AnyConnect and saw that OpenVPN was open-source and free, which is why we prefer it. 

As solutions providers, we deal with a lot of VPN technology. For example, I have worked with FortiClient. 

Prior to OpenVPN, I've had some experience with SonicWALL VPN, Fortinet, and CiscoVPN. All of these are fine alternatives, and I rarely experienced a problem using them. The big push for me to look at OpenVPN came when I started to work in heterogeneous environments, using both Windows and Linux.

As I started to discover the options available through the Linux platform, I naturally continued to expand my curiosity and experiment with the options I found. In many cases, I found some that were okay, but too unstable to really consider, and in others, I found outstanding products developed by some brilliant people.

OpenVPN became the perfect solution for me when I tried to connect two DRBD farms together and needed to encrypt the data stream between the two. It made sense to use the product from the host responsible for managing the DRBD stack, and simply add the remote farm via the tunnel. I then began to see other opportunities where I could apply it, and finally jumped in full force.

We did not previously use any other services similar to this product. 

We didn't have a previous solution. We had done a little research and we went with OpenVPN as the first option. It wasn't that we went through several before it.

We have migrated to Fortinet because of security vulnerabilities.

No.

We did not previously use a different solution. 

I have been using Palo Alto and the Fortinet VPN as a comparison to OpenVPN Access Server.

OpenVPN was already implemented when I took over the IT department. I do know that there was also a Cisco VPN product in place, but it was finicky and many of our end-users had issues with the Cisco VPN. At the time, it also didn’t work on mobile devices and the required ports were blocked by certain ISPs (like some hotel internet connections, cellular providers, etc.)

We started off with OpenVPN when we were evaluating what we could use for our needs and we ended up with OpenVPN. I have used other VPN solutions at other offices, but in the cases that I've dealt with, OpenVPN was the choice.

Cisco VPN, L2TP/IPsec. OpenVPN is easier to maintain and use, save us time.

Just regular Windows Server PPTP/L2TP and Linux PPTP. OpenVPN is clearly better than the regular solutions.

I have used Proton VPN in parallel to OpenVPN Access Server.

This was our first solution.

We switched from IPSec and switched because of NAT issues.