Tampering with the name resolution over the internet finds many maxims. One such way to attack is DNS Cache Spoofing. It is an unauthorized practice that involves creating fake IP addresses. Domain Name System is a distributed system that translates the internet domain names to IP addresses. The DNS returns the IP address to a specifically assigned domain name. The process comes to be known as name resolution. But, what is this poisoning process, and how does it take place?
What is Domain Name System Cache Spoofing?
DNS Cache Spoofing is an act of entering false information into the cache of the system. The process occurs so that the Domain Name System queries return an incorrect response and the users find automatic directions to wrong websites. It is famous under the name of cache poisoning. The IP addresses on the internet are room numbers so that the user web traffic lands at the right places. Hackers tamper with the name resolutions- specific to the fake domain name’s IP address. This means that the device sets-up a connection to the affected IP addresses, redirecting the web traffic to a fake server. Note that the traffic goes to the wrong places until the users correct the cached information. Another vital aspect is that spoofing does not disconnect the real websites from their authorized IP addresses.
Threats of Cache Spoofing:
The technology finds immense usage. All connections use the same for the name resolution, affecting almost all the relationships which the client establishes. The hacker’s spoof servers’ IP addresses whether the victim is looking out to send an email or access a particular website. Now that you are taking some steps to clear the cache on your Mac and boost its performance, you get across the interesting write-up on DNS Cache Spoofing. It would rather be an exciting task to know the risks it brings along because of what good of a poisoned cache.
- Confidential data thrift: Spear phishing comes to use for stealing sensitive information such as passwords. These unscrupulous methods come to use for hacking computer systems or scams, likewise.
- System infections: The victim is intentionally forced to install malware into their systems. And, this, in turn, opens doors to future attacks.
- User profile collections: With spoofing, the user’s data gets collected and then sold or employed for phishing.
- Persistent threats: If the malicious server finds it set up on the system, the communication further finds a compromise. Even the fake Domain Name System responses tend to appear in the cache and cause damage to the future.
DNS Protection Checklist:
Some steps work wonders in protecting yourself against the threats of spoofing. All you’ve to do is follow the checklist:
- Setup and ensure apt maintenance of your servers. You can configure the DNS on Windows and BIND in about 30 minutes with the utmost ease.
- Don’t answer system requests over the WAN on port 53.
- Audit your DNS zones because, over time, the users tend to forget about the test domains and subdomains. Thus, the best thing the users can do is begin the exploration of the DNS public records. You can employ some software for reviewing the zones and IPs.
- Learn how the Domain Name System works and begin from the surface level and dwell onto it to the core-level.
- If you’re an enterprise that isn’t using its DNS servers and decides to use a third-party server, then think again. The attacker can gain access to your passwords and usernames, but you can have control by using two-factor authentication. The experts recommend you avoid SMS and Phone call verifications and consider Google Authenticator whenever possible. Believe me when I say that it is far more secure than you can imagine.
- Cluster your resources to the best. Most people faced DNS issues when there were finite computer resources and performance poor. Thus, ensure doing your testing process.
- Disabling DNS recursion is another tip to protect your system against spoofing. The recursion is already enabled by default on almost all the Bind servers on the Linux distributions, which leads to poisoning issues. Thus, follow some steps to disable the recursion. You can also protect your server by enabling the DNSSEC. It is a substantial extension of security. The DNS protocol works by employing security signatures to ensure that the query occurs from a real origin server.
- The zone transfers are just a copy of the DNS zones. The technique finds employment by attackers who perform the DNS zones transfer to understand the network topology better. Thus, limit the zone transfer for protecting your DNS zone information. You can prevent the same by making use of ACL.
The checklist is sure to protect your system against security breaches while helping you dwell in tranquility.
DNS spoofing is a complex and comprehensive issue. Knowing the maxims of protecting the system infrastructure and overall network health holds greater importance. We say this because the hackers will always try to find ways to target your public company services. They search Domain Name System weaknesses. Following the protection essentials enable Domain Name System spoofing to lose its power, thanks to the hardening policies.