A virtual private network (VPN) creates an encrypted tunnel across an untrusted network, usually the internet, so that traffic is protected as if it traveled over a private link. Site-to-site VPNs connect whole networks, such as a branch office to headquarters, using gateways at each end; users are unaware of them. Remote access VPNs connect individual users' devices to the corporate network through client software. Common technologies include IPsec, TLS-based VPNs (often called SSL VPNs, which can work through a browser or client) and newer protocols such as WireGuard.
Keep reading for free
Create a free StudyToCert account to read the rest of this lesson: 5 more sections, 4 key terms, a real-world example, an exam tip and self-check questions. Every lesson, lab and practice test is free with an account.