Do you want to optimize your DNS resolution? Would you like to use multiple nameservers, manage the traffic with them and get a great performance? Cloud-based Load Balancing can be the right tool for the job, but what is it?
Ping command is one of the built-in network diagnostic commands that you have inside your OS (Windows, Linux, macOS, FreeBSD, etc.). Ping is used for checking the connectivity between your device and the target that cloud be a hostname like google.com or IP address like 192.168.2.1.
Ping, by default, will send 4, 32-byte packets to the target using the ICMP (Internet control message protocol).
Default result of a Ping command
What a scary combination! Just by reading “attack”, you can feel goosebumps. Then, when “amplification” is added, you can visualize an attack whose power could be increased to damage even more.
What is a DNS amplification attack?
The DNS amplification attack is the type of DDoS attack where a hacker spoofs its IP address and changes it to the target’s IP address, then performs a DNS query access to open, public recursive DNS servers to saturate the target (system) with DNS response traffic. The amplification comes from the answer, which may be many times bigger than the original request.
There are many DNS servers globally, but have you thought about what kind of DNS servers they are? There are authoritative DNS servers and recursive DNS servers. Let’s explore together the different DNS servers’ types in detail.
The DMARC record explained.
The short acronym DMARC stands for Domain-based Message Authentication, Reporting, and Conformance. It is a mechanism, which provides the email receivers and senders to define if a particular message is legitimately from the sender. And also, what action to follows if it isn’t. The DMARC record helps recognize more easily phishing, and spam messages received in the users’ mailbox. It also assists in keeping these emails away from there.
You can troubleshoot different DNS problems using the built-in commands that you already have on your computer. No matter if you are a Windows, Linux, or macOS user, you have various commands included in your OS. Here are the 5 most popular DNS troubleshooting commands that you should know and how to use them.
The DNS is a hierarchy structure that looks like a tree. It is divided into layers where the top is the Root than the TLD-level, followed by the domain and the subdomain. You can get the right to manage a particular part of the DNS that is related to the domain you have purchase. You can manage it through DNS master zones that you can create from the software you are using or through the control panel of your managed DNS provider.
What is a DNS master zone?
The DNS master zone file is a DNS database of DNS records for a part of the namespace. A zone file typically will have SOA record, NS records, AAAA, A, MX, TXT, and other DNS records for the domain or subdomain. The master zone will be saved on a master DNS server (also known as the Primary DNS server).
What is it?
The DNS zone transfer is the process of copying the information from the Master DNS server to the Secondary server or servers. The copying can be done by pushing the update from the Master DNS server to the Secondary servers or by a pull from the Secondaries to obtain the new changes.
The DNS administrator can limit which Secondary DNS server can ask for DNS zone transfer by whitelisting their IP addresses. You don’t want everybody on the Internet to be able to get all of your DNS records because many might be internals and not for everyone’s eyes.
DNS infrastructure really makes Internet surfing an easy and pleasant experience. Have you ever thought about how connectivity for too many humans around the world is possible? DNS process is complex, and it repeats millions of times every day. Would you like to know some of the responsible actors for this scene to work efficiently? Let’s start with servers. Authoritative and recursive servers.
Distributed denial of service (DDoS) attacks are nasty and harmful. They have consequences that no organization or business wants to experience. When criminals shut down your business, they also drag down important stuff, values that take a long to build, like consumer’s trust.
In different contexts, time is a factor in evaluating efficiency. But perhaps the Internet is the ultimate expression of that. The process of requesting a website and waiting for it to be loaded takes milliseconds. But if something delays it a bit, three-second waiting can be a reason for clients to abandon your website.
Website owners constantly deal with the time factor. The fast resolution, high speed, up-time are permanently on their priority list. If that’s your case, too, GeoDNS can be the solution.