A Domain Name System (DNS) is a protocol that converts user-friendly or alphabetical web addresses to IP addresses that machines understand, allowing users to access websites, download content and send emails. DNS services are critical to the network as all communication between clients and server systems is achieved through DNS lookups. DNS attacks are exploit the leverage vulnerabilities in DNS servers to launch various attacks. The different types of DNS attacks are Domain Hijacking, DNS Hijacking, DNS Spoofing, DNS Tunneling, DNS Flood attacks, Distributed Denial of Service (DDoS) and Distributed Reflection Denial of Service (DRDoS).
Domain Hijacking occurs when hackers make changes in the DNS server to direct traffic away from the intended destination to new web addresses that are often compromised. Malicious code is used to reconfigure the TCP/IP settings of the local computer to redirect client requests. DNS Spoofing or Cache Poisoning involves inserting code into the DNS server’s cache to redirect traffic from the intended website to the hacker’s web address. DNS tunneling is an attack in which a connection is established between the hacker’s system and the host, enabling the hacker to send malicious code to the DNS Server.
DNS Servers are critical to the functioning of the network and require continual traffic monitoring and regular audits to prevent attacks. AttackSolutions provides its users with an exhaustive checklist to follow while configuring DNS servers to cover potential system vulnerabilities. We also recommend using digital signatures and certificates to authenticate sessions and protect user data. It is advisable to update user devices to the latest versions of software and install patches to fix bugs as soon as possible. AttackSolutions use tools like LOIC (Low Orbit Ion Cannon), XOIC, HULK, and Tor’s Hammer to counter DNS attacks.
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