DNSvédelmi

DNSvédelmi is a term that refers to DNS security or DNS protection. It encompasses a range of measures and technologies designed to safeguard the Domain Name System (DNS) from various threats and vulnerabilities. The DNS is a critical component of the internet, responsible for translating human-readable domain names (like google.com) into machine-readable IP addresses.

Threats to DNS include distributed denial-of-service (DDoS) attacks aimed at overwhelming DNS servers, DNS spoofing or cache poisoning where attackers redirect users to malicious websites by providing false DNS information, and DNS hijacking which involves compromising DNS resolvers or authoritative servers. These attacks can lead to website unavailability, data breaches, and the spread of malware.

DNS védelmi strategies involve several layers of security. These can include implementing DNSSEC (DNS Security Extensions) to provide authentication and integrity for DNS data, using secure DNS resolvers that filter malicious domains, and employing network security devices like firewalls and intrusion detection systems. Encrypting DNS queries, such as through DNS over HTTPS (DoH) or DNS over TLS (DoT), is also a key aspect of modern DNS védelmi, as it prevents eavesdropping and manipulation of DNS traffic. Organizations also implement access controls and monitoring to detect and respond to suspicious DNS activity.