Building OllaVPN: What I Learned While Working on a Privacy-Focused VPN

Building a VPN sounds simple from the outside: connect a device to a server, encrypt the traffic, and send it to the internet.

In practice, there is much more involved.

While working on OllaVPN, I started looking at VPNs not just as a product, but as a networking system where security, routing, DNS, reliability, and user experience all have to work together.

Why I Started Working on OllaVPN

The main idea behind OllaVPN is straightforward:

Make secure internet access easier without hiding the important security principles behind unnecessary complexity.

Users should not have to understand routing tables, DNS configuration, encrypted tunnels, or connection states just to use a secure network connection.

That does not mean the underlying system should be simple.

It means the complexity should be handled by the software instead of being pushed onto the user.

What Happens When a VPN Connects?

At a high level, a VPN creates an encrypted tunnel between the client and a VPN server.

The simplified flow looks like this:

text
Your Device
     |
     | Encrypted Tunnel
     v
 OllaVPN Client
     |
     | Protected Connection
     v
  VPN Server
     |
     v
  Internet