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Virtual Private Networks (VPNs) create encrypted tunnels over public networks, allowing secure communication between remote users, branch offices, and cloud environments. Tunnelling protocols encapsulate private data within public network packets, ensuring confidentiality and integrity in transit.
A VPN extends a private network across a public network (typically the internet) by creating an encrypted tunnel between two endpoints. Anyone intercepting the traffic sees only encrypted data — they cannot read or tamper with the contents.
| Use Case | Description |
|---|---|
| Remote Access VPN | Employees connect to the corporate network from home or travel |
| Site-to-Site VPN | Permanent encrypted link between two office networks |
| Cloud VPN | Secure connection between on-premises and cloud environments |
| Client-to-Client VPN | Peer-to-peer encrypted communication |
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