If you know to check Reddit for VPN advice, you likely already have some general knowledge about VPN protocols. But here's a breakdown if you need a refresher: A protocol is the rulebook that dictates how the VPN client talks to the VPN server and creates a tunnel, ultimately playing a role in security and vulnerabilities. Two modern protocols often come up in conversation on Reddit among users who don't want to use their VPN's native client: Wireguard and OpenVPN. Both are open source, giving anyone in the community access to the source code to conduct their own investigation on potential security flaws — and Reddit users appreciate the ability to take things into their own hands. Wireguard's simpler code base is a little easier to crack and offers technical perks like better encryption and connection times, but it's not as polished as OpenVPN. OpenVPN, on the other hand, is the go-to for streamers and gamers.