What do you need to know about DNS poisoning?
DNS cache poisoning is the act of entering false information into a DNS cache, so that DNS queries return an incorrect response and users are directed to the wrong websites. DNS cache poisoning is also known as ‘DNS spoofing.’. IP addresses are the ‘room numbers’ of the Internet, enabling web traffic to arrive in the right places.
What’s the difference between DNS poisoning and spoofing?
What is DNS poisoning/spoofing? Domain name system (DNS) cache poisoning, also known as DNS spoofing, is a method of computer hacking in which traffic is maliciously diverted to a victim’s computer via corrupted cached data/files.
Is it possible to validate DNS cache poisoning?
Without getting too “truther” on you, let’s just acknowledge the fact that with a “targeted attack” vector like DNS cache poisoning, it becomes VERY difficult to validate almost anything.
Can a malware attack corrupt the DNS cache?
The corruption of the DNS cache can be achieved either by: – Computer malware, or – Network attacks that insert invalid DNS entries into the cache. Reminder: when a user tries to browse to a website, the computer queries its local DNS cache for the IP address.
What is DNS spoofing and what is cache poisoning?
DNS cache poisoning is also known as ‘DNS spoofing.’ IP addresses are the ‘room numbers’ of the Internet, enabling web traffic to arrive in the right places. DNS resolver caches are the ‘campus directory,’ and when they store faulty information, traffic goes to the wrong places until the cached information is corrected.
What do you need for a DNS spoofing attack?
Essentially, all a DNS spoofing attack needs is a target. This can be an ‘Authoritative Name Server’ (easily obtained by doing a domain WHOIS on any domain on the Internet) and a weak point on the system hosting that DNS cache.
How does DNS spoofing and DNS cache poisoning work?
DNS poisoning also goes by the terms “DNS spoofing” and “DNS cache poisoning.” DNS servers take the words you type in when looking up a website, such as “Fortinet.com,” and use them to find the Internet Protocol (IP) address associated with it. These addresses are stored in the DNS cache.
What does DNSSEC stand for in Domain Name System?
DNSSEC is short for Domain Name System Security Extensions, and it is a means of verifying DNS data integrity and origin. DNS was originally designed with no such verification, which is why DNS poisoning is possible. Much like TLS/SSL, DNSSEC uses public key cryptography (a way of digitally signing information) to verify and authenticate data.