Internet Protocol Security (IPsec) What is IPsec? Internet Protocol Security (IPsec) is a suite of protocols that encrypts and authenticates data transmitted over IP networks, enhancing security and privacy. Explanation IPsec operates at the network layer, securing data during transmission by using encryption and authentication techniques. It is widely used in VPNs and secure communication channels. Practical Example of IPsec A company utilises IPsec to establish a secure VPN connection between its remote employees and the corporate network, safeguarding sensitive data.