https://github.com/priyabug/virtual-private-network---ip-tunneling-and-routing

Virtual Private Network (VPN) enables secure communication over public or untrusted networks by encrypting traffic and routing it through a secure tunnel exploring VPN implementations, IP tunneling techniques, and routing mechanisms, demonstrating how VPNs establish secure connections and how traffic is managed across different network environments
https://github.com/priyabug/virtual-private-network---ip-tunneling-and-routing

router routing tunneling vpn vpn-client vpn-server

Last synced: 2 months ago
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Virtual Private Network (VPN) enables secure communication over public or untrusted networks by encrypting traffic and routing it through a secure tunnel exploring VPN implementations, IP tunneling techniques, and routing mechanisms, demonstrating how VPNs establish secure connections and how traffic is managed across different network environments

• Host: GitHub
• URL: https://github.com/priyabug/virtual-private-network---ip-tunneling-and-routing
• Owner: Priyabug
• Created: 2024-08-16T05:30:19.000Z (10 months ago)
• Default Branch: main
• Last Pushed: 2025-02-21T05:36:07.000Z (3 months ago)
• Last Synced: 2025-02-21T06:26:34.426Z (3 months ago)
• Topics: router, routing, tunneling, vpn, vpn-client, vpn-server
• Language: Python
• Homepage:
• Size: 5.41 MB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
Virtual Private Network - IP Tunneling and Routing


Description


•  A private network constructed on top of a public network, typically the Internet, is called a virtual private network, or VPN. Even though their communication may pass through a public network, computers inside a VPN can connect securely, exactly like if they were on a true private network that is physically isolated from the outside world. With the use of a VPN, staff members may safely access their company's intranet while on the go. Businesses can also use VPNs to extend their private networks domestically and internationally.

•  The goal of this lab implementation is to understand how a VPN operates. We concentrate on a particular kind of VPN (the most popular one), which is constructed on top of the transport layer. We are going to construct a basic VPN from the ground up.




![image](https://github.com/user-attachments/assets/6e2f1fb3-cbd2-46da-ac63-ee55d799403b)

 Lab topics covered


- Network Setup.

- Create and Configure TUN Interface


          2.a: Name of the Interface


          2.b: Set up the TUN Interface


          2.c: Read from the TUN Interface


          2.d: Write to the TUN Interface


- Send the IP Packet to VPN Server Through a Tunnel

Shell scripts commands


- `./dc-build.sh` - Build the docker images, it can take one additional parameter to be used in the build process.

- `./dc-up.sh` - Start the docker containers in the foreground.

- `./dc-up-d.sh` - Start the docker containers in the background.

- `./dc-stop.sh` - Stop the docker containers, it can take one additional parameter to be used in the stop process.

- `./dc-down.sh` - Stop and remove the docker containers, it can take one additional parameter to be used in the stop and remove process.

- `./dc-unittest.sh` - Utility script to aid in running a specific unit test class.

Program walk-through:

This lab provides hands-on experience with the foundational concepts of VPNs, including TUN/TAP interfaces, tunneling, and routing. By implementing both unidirectional and bidirectional tunnels,


- Virtual Private Network:


   • The TUN/TAP virtual interface


   • IP tunneling


   • Routing