The Real Cost of API Downtime

Last week, the digital world experienced a power outage. A major distributed edge computing platform experienced a software bug that led to the collapse of their Domain Name System (DNS), or the Internet’s way to map domain names (i.e. united.com) to IP addresses. The consequences were costly. So what is the real cost of downtime? When a DNS system within a globally recognized edge platform fails, it causes downtime for a huge amount of international enterprises.


DNS Lookup Explained

The Domain Name System, DNS for short, is one of the most important protocols on the internet, and yet relatively few people understand its purpose. DNS is a protocol which governs how computers exchange data online. Its purpose, simply stated, is to match names with numbers, helping to convert memorable domain names (such as statuscake.com), into an IP address (such as for Google.com) that your browser can use. DNS is essentially a map or a phone book of the internet.


Resolving Issues Caused By the May 6th Neustar UltraDNS Outage - A True Partnership Experience

At Catchpoint, our award-winning support team aims to be a partner, not just a gateway to the tool. Earlier this month when UltraDNS, a major DNS provider, went down, they found themselves faced with nine support tickets within one hour. Our customers were experiencing outages on their websites and online services. They needed urgent help from Catchpoint in understanding what was causing the disruption, so they could quickly resolve the situation.

DNS Dashboard | Tigera - Long

While it’s an essential part of Kubernetes, DNS is also a common source of outages and issues in Kubernetes clusters. Debugging and troubleshooting DNS issues in Kubernetes environments is not a trivial task given the limited amount of information Kubernetes provides for DNS queries. The DNS Dashboard in Calico Enterprise and Calico CLoud helps Kubernetes teams more quickly confirm or eliminate DNS as the root cause for microservice and application connectivity issues.

DNS Load Balancing for Highly Available Enterprise WordPress Cluster

Scalability, high availability, and performance are fundamental to the success of a commercial product deployment. And if the workload includes multiple entry points for requests, it is important to properly set up smooth load balancing in order to achieve the required uptime and speed. One of the solutions in this case is to use a DNS service with origin servers health checks.


Monitoring DNS Performance The Right Way With Catchpoint

The Domain Name System (DNS) is at the core of the engine that keeps the internet running. We have explained how DNS works and why it is critical to the functioning of the internet in our Synthetic Monitoring Guide. The DNS resolution relies on various components, such as the DNS resolvers, name servers, authoritative servers, and zone files, to function properly and the process typically takes milliseconds to complete.


Azure DNS Outage - April 1st, 2021

Just about 2 weeks after its most recent outage, Microsoft experienced a severe DNS outage Thursday Evening at approximately 21:30 UTC on 01 Apr 2021. That’s the official start of the outage from Microsoft. But we all know that official starts and actual starts are often different. Exoprise DNS and server monitoring caught the error about 10 minutes earlier (not our biggest amount of headroom for an outage) but that is frequently the nature of DNS failures.


Globally used DNS provider Network Solutions suffers an outage

On Wednesday 17th March, globally used DNS provider Network Solutions experienced the dreaded downtime we all hope to avoid. Starting at 4am Eastern time and continuing through to Thursday 18th with still no resolution, it’s affected thousands of people across the world. Network Solutions are the 4th biggest domain registrar in the world, with nearly 7 million users worldwide.


Securing Your DNS

When the Domain Name System (DNS) was created in 1983 I imagine its creator Paul Mockapetris and his team had no idea that nearly 40 years later our interconnected world would be so reliant on the very simple, but critical, DNS network service. I have a love-hate relationship with DNS. I love all of the memes I see about how “It’s always DNS”, but I hate that it’s also true—I always forget to check that DNS is working correctly when troubleshooting network issues!


Flowmon Detects Windows DNS SIGRed Exploitation

The vulnerability called SIGRed (CVE-2020-1350) has been around for 17 years, during which time it was present in Windows Server operating systems from version 2003 through 2019 and received a maximum severity rating of 10. It was finally patched in July 2020. As the vulnerability allows an attacker to perform remote code execution on Windows Server via DNS, it poses an extremely serious danger and can propagate over the network without user interaction.