Separate authoritative name server from resolver— don’t run both on the same server, so a DDoS attack on either component won’t take down the other one. Restrict zone transfers— slave name servers can request a zone transfer, which is a partial copy of your DNS records. Zone records ...
A root nameserver is a type of nameserver that lives in the DNS root zone. We’ll discuss more on zones shortly, but basically the root zone is the top of the DNS hierarchy and it holds the domain names and numeric IP addresses for all TLDs (reminder — those are .com, .org, etc....
DNS hijacking (also known as DNS redirection or domain theft) is a cyberattack where a hacker takes control of a domain by manipulating a vulnerability in the domain registrar's system or stealing the administrator's login credentials. Once in control of the domain, the threat actor can interc...
DNS technology wasn’t designed with security in mind. One example of an attack on DNS infrastructure isDNS spoofing. An attacked hijacks a DNS resolver’s cache, causing users who visit a website to receive an incorrect IP address, and view an attacker’s malicious site instead of the sit...
AXFR offers no authentication, so any client can ask a DNS server for a copy of the entire zone. This means that unless some kind of protection is introduced, an attacker can get a list of all hosts for a domain, which gives them a lot of potential attack vectors. ...
Once this server is identified, the attacker sends a request for a DNS zone transfer, which typically generates a large response. The request is made to appear as if it originates from the target’s IP address, ensuring that the heavy response is directed at the victim. ...
DNS servers FTP servers Mail servers Proxy servers Web servers Click to See Larger Image DMZ Design And Architecture A DMZ is a “wide-open network," but there are several design and architecture approaches that protect it. A DMZ can be designed in several ways, from a single-firewall appro...
DNSSEC is a suite of extensions that improve Domain Name System (DNS) security by verifying that DNS results have not been tampered with. Enterprises can use DNSSEC to improve their DNS security. DNS technology wasn’t designed with security in mind. One example of an attack on DNS infrastruct...
All domain's DNS data is stored on name servers on the Internet. Some organizations even run their own, but most will outsource this function to a third-party like a registrar, Internet service provider or web hosting company. What is a DNS Zone? The DNS is broken up in many different ...
A demilitarized zone network, or DMZ, is a subnet that creates an extra layer of protection from external attack. Network administrators must balance access and security. Your employees must tap into data outside of the organization, and some visitors need to reach into data on your servers. ...