IP spoofing is a technique used to send Internet Protocol (IP) packets from a false source address. This means that the sender can disguise their true identity, making it appear as if the data is coming from a different computer. This can be used for various purposes, including testing network security or launching attacks. One common use of IP spoofing is in DDoS attacks, where multiple compromised systems flood a target with traffic. By masking the original source of the traffic, attackers can make it difficult for the target to identify and block the malicious requests, leading to potential service disruptions.