What are the uses of IP security ?

IPsec can be used :

Encrypting Application Layer Data:

• Imagine you’re sending sensitive information, like messages or files, over the internet.
• IPsec helps scramble this information so that even if someone intercepts it, they can’t understand it without the proper decryption key.

Securing Routers and Routing Data:

• When routers share information over the public internet, there’s a risk of someone tampering with or eavesdropping on that data.
• IPsec ensures that the data traveling between routers is protected, preventing unauthorized access or modifications.

Providing Authentication (No Encryption):

• Sometimes, you just want to make sure the data comes from a trusted source without encrypting the entire message.
• IPsec allows for a digital handshake, verifying the identity of the sender without necessarily encrypting the content.

Protecting Network Data with VPNs:

• If you’re setting up a Virtual Private Network (VPN) to connect two points securely, IPsec can create an encrypted tunnel.
• All the data traveling through this tunnel is shielded from prying eyes, enhancing the privacy and security of the network connection.