Is VPN all about encapsulating the source and destination IP address?

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In summary, the conversation discusses the encryption of data in a VPN, specifically the source and destination IP addresses, firewall addresses, and payload. The question is raised about whether a VPN only encapsulates and encrypts, and if encapsulating with firewall addresses is necessary. The speaker also expresses a lack of understanding about VPN workings and asks for guidance. The conversation then shifts to discussing diagrams and valid references for a basic intro to VPNs. It is revealed that the diagrams are from the book "Cryptography and Network Security" by "Atul Kahate" and the speaker is still unsure about the relevance to VPNs.
  • #1
shivajikobardan
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Homework Statement
VPN-Virtual Private Network
Relevant Equations
None
What’s encrypted here? Is the source and destination IP address encrypted? Is the firewall1 address and firewall2 address encrypted? Is the payload also encrypted?
Is this all what a VPN does? I can’t really believe that VPN only encapsulates and encrypts.
If it’s encrypting the source and destination IP address, is encapsulating with firewall address necessary? Because nobody is going to find about that.
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I feel I'm missing some crucial information about the intricacy of VPN working. So, please guide.
 
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  • #2
Where did you get those copyrighted diagrams? Do you own their copyright?

And you know that you need to post valid references and ask *specific* questions about those references. Start here for a basic intro:

https://en.wikipedia.org/wiki/Virtual_private_network
 
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It's from the book "Cryptography and Network Security " by "Atul Kahate". I still don't get how is this about VPN? This looks about Firewalls.
 

1. What is a VPN?

A VPN, or Virtual Private Network, is a secure and private network connection that allows users to access the internet or a private network remotely. It creates a secure tunnel between the user's device and the network, encrypting all data that is transmitted.

2. How does a VPN work?

A VPN works by encapsulating the source and destination IP address within an encrypted tunnel. This means that all data transmitted through the VPN is protected and cannot be intercepted by anyone outside of the VPN.

3. Why is encapsulating the source and destination IP address important in a VPN?

Encapsulating the source and destination IP address is important in a VPN because it ensures that all data transmitted through the VPN is secure and private. It prevents anyone from intercepting the data and also allows users to access websites and networks that may be restricted in their location.

4. Is encapsulating the source and destination IP address the only security measure in a VPN?

No, encapsulating the source and destination IP address is not the only security measure in a VPN. VPNs also use encryption protocols to ensure that all data transmitted is encrypted and secure. They may also use other security measures such as firewalls and authentication methods to further protect the network.

5. Are all VPNs the same in terms of encapsulating the source and destination IP address?

No, not all VPNs are the same in terms of encapsulating the source and destination IP address. Different VPN services may use different protocols and methods to encapsulate the IP address, so it is important to research and choose a reputable VPN provider that offers strong encryption and security measures.

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