DNSSEC

C.

DNSSEC is designed to prevent the spoofing and redirection of DNS resolutions to rogue sites.

DNSSEC, or Domain Name System Security Extensions, is a security protocol designed to provide cryptographic authentication and integrity to DNS (Domain Name System) records. DNS is a fundamental protocol used by the internet to translate human-readable domain names (such as example.com) into IP addresses (such as 192.0.2.1) that computers can understand. DNSSEC aims to prevent a type of security threat called DNS Spoofing or DNS Cache Poisoning.

DNS Spoofing is a type of attack where an attacker manipulates DNS responses sent to a user's computer or a DNS resolver. The goal of the attacker is to redirect the user to a malicious website, which could look identical to the legitimate website, but is designed to steal sensitive information, such as usernames, passwords, or credit card numbers. DNS Spoofing can also be used to redirect traffic to a server controlled by the attacker, which can be used to launch further attacks such as malware downloads, or even to gain access to the victim's network.

DNSSEC helps prevent DNS Spoofing by adding digital signatures to DNS records. This means that a user's computer or DNS resolver can verify that the DNS response it receives is authentic and hasn't been modified by an attacker. If an attacker tries to modify the DNS response, the digital signature will no longer match, and the user's computer or DNS resolver will reject the response. DNSSEC uses a hierarchical trust model, where the root DNS servers are the trust anchors, and all lower-level DNS servers are verified against them.

In summary, DNSSEC is designed to prevent DNS Spoofing, which is a type of security threat that can redirect users to malicious websites or servers controlled by attackers. By adding digital signatures to DNS records, DNSSEC provides cryptographic authentication and integrity, helping to ensure that users are communicating with the intended server and not a malicious imposter.