It seems like you might be referring to OpenVPN, which is a popular and widely used open-source VPN protocol. OpenVPN allows users to connect to any server over the internet without compromising their privacy or security. If you're looking for information about a VPN service called "Open", it could refer to OpenVPN or another specific VPN service. If you have more context or specific questions about VPNs, feel free to provide more details, and I can help explain them further!