How VPN Works: Understanding Interfaces,Routing and Encapsulation

Описание: How VPN Works: Understanding Interfaces,Routing and Encapsulation #cybersecurity #networking #shorts

A Virtual Private Network (VPN) is crucial for securing internet traffic by encrypting data and routing it through a secure tunnel. Here's a quick breakdown of how a VPN works:

1. User Application: A request (like browsing a website) sends an unencrypted original packet with HTTP data.

2. VPN Client Software: The unencrypted packet is encrypted by the VPN software, and the payload is protected with encryption.

3. Encapsulation: The VPN packet is then encapsulated, adding a new IP header to the encrypted data.

4. Transmission: The encapsulated VPN packet is sent over the public internet, passing through untrusted networks.

5. VPN Server: At the server end, the VPN packet is decrypted and decapsulated, restoring the original data.

6. Forwarding to Destination: Finally, the original packet is forwarded to the target web server for completion.

VPNs offer privacy and security for data transmission across insecure networks, ensuring the integrity and confidentiality of online activities.

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