What is DNS Blocking? DNS blocking is a mechanism that prevents access to certain web pages on a server. It works by removing the IP address name from the “phonebook” on the server, making it impossible for devices to access the blocked website. DNS blocking can block whole genres of ...
What is a DNSBL? Solution Domain Name System Blacklists, also known asDNSBL's, DNS Blacklists or DNS Block Lists are spam-blocking lists that allow a website administrator and ISPs (Internet Service Providers) to block messages from specific systems that have a history of sending spam. If t...
What Is DNS blocking? This article will help you understand what DNS block is, who uses it, and how it works. It also covers some topics around DNS security in general. Read more Combining ease and security Another common question is whether this process will cause slowdowns in accessibility...
What is DNS filtering? DNS filtering is the practice of blocking access to certain sites for a specific purpose, oftencontent-based filtering. If a site, or category of sites, has been deemed a threat, then its IP address is blocked with a DNS filter and access to it is prevented. Examp...
One of the easiest ways malware poisons a device’s DNS lookups is to modify the machine’s hosts file. The hosts file has legitimate uses for, among other things, web development, content blocking and VM software, but it also allows attackers to specify custom IP addresses for any domain....
DNS scavenging is the process of removing stale DNS records. It helps keep the DNS server’s database clean and efficient. Most of the time, IT Administrators use it along with DNS aging to free up space and improve system performance....
Blocking domain-names (or IPs or geolocation regions) based on known reputation or perceived danger. Rules around “strange looking” DNS query strings. Rules around the length, type or size of both outbound and inbound DNS queries. General hardening of the client operating systems and understandi...
The Domain Name System (DNS) is a key web technology, effecting everything from speed to privacy to whether you can access Netflix. But what is it and how does it work?
The perpetrators will then overwhelm the website with traffic and reroute it to another malicious website, blocking user access to the original website. If you want to pursue a career in cyber security, the Cyber Security Certification is a great place to start! DNS Man-in-the-Middle ...
If you care about the security of your business and your visitors, you need to know what is a DNS hijacking to prevent data going into wrong hands.