Useful ‘host’ Command Examples for Querying DNS Lookups
Host command is a minimal and easy-to-use the command line interface, or CLI utility for performing DNS lookups which translate domain names to IP addresses and vice versa. It can…
How to Install and Use dig and nslookup Commands in Linux
In this article, you will learn how to install the dig command and nslookup command on Linux. These commands are used for network troubleshooting and gathering information about domain names.…
10 Linux Dig (Domain Information Groper) Commands to Query DNS
In our previous article, we have explained nslookup command examples and usage, which is a networking command-line tool used for querying and getting information of DNS (Domain Name System). Here,…
The DNS System Hierarchy
Domain Name System (DNS) Hierarchy. Caches, Resolvers, Root, TLD, and Authoritative Name Servers explained for DNS requests.
What is DNS Filtering?
DNS filtering defined DNS filtering (or DNS block) describes a cybersecurity measure used to stop internet users from accessing unapproved websites on a server. Organizations use DNS blocking to secure…
DNS amplification attack
DNS amplification is a DDoS attack that leverages DNS resolvers to overwhelm a victim with traffic. What is a DNS amplification attack? This DDoS attack is a reflection-based volumetric distributed…
What is DNS? | How DNS works
DNS lets users connect to websites using domain names instead of IP addresses. Learn how DNS works. What is DNS? The Domain Name System (DNS) is the phonebook of the…
What is a DNS A record
The DNS A record points to the IP address for a given domain name. What is a DNS A record? The “A” stands for “address” and this is the most…
What is a DNS AAAA record?
The DNS AAAA record matches a domain name with an IPv6 address — similar to A records, which do the same for IPv4 addresses. What is a DNS AAAA record?…
What Is TTL (And How Do You Choose the Right One)?
When users visit your website, you want them to receive the most up-to-date information. However, you also need your site to load quickly. Otherwise, you risk a bounce, where the…