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Home/ Questions/Q 3130
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Shailendra Yadav
Shailendra YadavLevel 50
Asked: September 16, 20212021-09-16T13:48:21+05:30 2021-09-16T13:48:21+05:30

At What Layer Of The Osi Model Does The Ipsec Encryption Protocol Operate?

At What Layer Of The Osi Model Does The Ipsec Encryption Protocol Operate?
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    1. Priya Hamsa Bronze
      2021-09-28T07:57:31+05:30Added an answer on September 28, 2021 at 7:57 am

      At What Layer Of The Osi Model Does The IPsec Encryption Protocol Operate?

      At layer three of the OSI model, the IPsec encryption protocol gets to operate. Now, let us know about the concept of the Ip sec encryption protocol. The Ip sec stands for internet security protocol. It is mainly used to secure the traffic in the network, by using the internet security protocol, we can have secure network traffic. Hence, all unauthorized users are not able to access the applications. Or they cannot access the private data.

      The data is transferred through a network called a TCP/IP network. The internet security protocol is mainly used to provide secure communication over the unsecured network area. The Internet security protocol has mainly two goals. The first one is, in order to protect the IP packets which are transferred between the sender and then the receiver.

      The second one is to provide a protective shell from all the external attacks. Simply it provides a defense against all the network attacks. Let us take an example to understand the working of the IPsec encrypted protocol. Let say two computers are communicating through each other. By using the IP, they transmit the data to each other across all the networks. While sending the data, if the data that is transmitted is not secured then all the users can able to access the data. And if the users are connected to any of the corporate networks then the network traffic can be accessible by all the users. This may increase more number of malicious attacks by unauthorized users.

      By configuring the Internet security protocol on the sending and then receiving of the data, the computer will make the data to be transmitted in a secured way. We can secure the data by the concept of encryption and then decryption.

      The encryption is nothing but, before the data is sent by the sender, the data is kept in a secured form and the encrypted data can only be decrypted by the receiver. Only the secured data can be sent to the receiver.

      The decryption is nothing but, only the secured data can be accessed at the receiver side, and the message sent by the sender can only able to decrypted by the receiver.

      We also have another technique called data signing, where the data is being sent by a trusted source. A negotiation must take place to determine how the data will be encrypted and decrypted by both sending and receiving of the IP sec. The IP sec will use the result of the security negotiation to create a session secret key that is required to encrypted and decrypt the data. The Ip security will then encrypts the data and then the data will be sent to the receiving computer.

      Now, the receiving computer will use the negotiated session secret key, in order to decrypt the data.

      Any response from the receiving computer will follow the same process, the IP sec will encrypt the data, and then it sends it to the sending computer

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