All posts by Nick Kephart

A Guide to DNS Record Types

Posted by on November 10, 2016

The domain name system (DNS) is a directory service that allows Internet-connected devices to lookup information for resources on the Internet. The information provided includes IP addresses, which are used to route Internet traffic. DNS uses a combination of record types to ultimately guide users to the right address for the Internet resource they’re looking for. We’ll cover the major… Read More »

Monitoring SaaS Performance from the End User

Posted by on November 1, 2016

When folks talk about end user or ‘real user’ monitoring, they usually mean injecting code (often Javascript) into an application to measure user behavior and timing. This can be great to complement an application monitoring strategy. But this sort of method doesn’t work when the application in question isn’t yours (as in the case of Software-as-a-Service apps). This method also fails to provide a detailed understanding of connectivity.… Read More »

The DDoS Attack on Dyn’s DNS Infrastructure

Posted by on October 25, 2016

On Friday, October 21st, a series of large-scale DDoS attacks were launched against Dyn, a managed DNS provider. Over the course of 18 hours, these attacks disrupted many critical services–including Spotify, Amazon and HBO Now–all of whom are customers of Dyn. At the height of the attack, approximately 75% of our global vantage points sent queries that went unanswered by Dyn’s servers.… Read More »

Monitoring FTP Servers and File Transfer Performance

Posted by on September 1, 2016

This week we added support for File Transfer Protocol (FTP) with a new web layer test, the FTP Server Test. This new tests helps network ops teams quickly visualize and troubleshoot file transfer performance, whether for an internal or external FTP server. We also pair the FTP Server Test with our standard TCP/IP metrics and views of network paths and routes to help streamline fault detection. You can validate both FTP server listings and content.… Read More »

Two New Chat Integrations: Slack and HipChat

Posted by on August 31, 2016

If you’re like most ops teams, you’re heavy users of alerts from your various systems and sensors. Our customers at ThousandEyes are sending out thousands of alert notifications per day. That’s a lot of emails. And although you’re likely also power users of email too, we’re guessing that’s something you’re less happy about. We’re excited to introduce two new integrations… Read More »

Powering Personalization at RichRelevance

Posted by on March 28, 2016

In our last post from ThousandEyes Connect SF 2016, we’ll dig into how a SaaS provider uses performance data to improve customer relationships. Kevin Duffey, VP of IT Operations at RichRelevance, shares his experience delivering personalized services to hundreds of retailers around the world.… Read More »

Powerball Gambles on Risky Network Strategy

Posted by on January 14, 2016

On January 13th, Powerball announced the winners of the largest lottery jackpot in U.S. history. Nearly $1.5B was up for grabs and with more than 635 million tickets sold, punters scrambled to check the winning numbers as they were announced at 8pm PT. There were three big winners. The Powerball website, however, turned out to be the loser for the… Read More »

Cultivating Operational Analytics at Credit Suisse

Posted by on November 3, 2015

In the first of our reports from ThousandEyes Connect New York, we’ll discuss the talk by Darrell Westbury, Director of Operational Analytics at Credit Suisse. Darrell is a 7-year veteran of Credit Suisse, having worked across a variety of IT Operations roles. He joined us to talk about “Operational Analytics: Data is the New Soil.”… Read More »

Was the UltraDNS Outage a DDoS Attack?

Posted by on October 20, 2015

Last Thursday, UltraDNS customers experienced a bit of déjà vu as the DNS service experienced another outage, the second since a massive DDoS attack on April 30, 2014. Neustar, the company behind UltraDNS, reported different root causes over time, first pinning the incident on a DDoS attack, and then later describing the issue as a server failure.… Read More »

Visualizing Traffic over ECMP and LAG Paths

Posted by on October 14, 2015

We focus a lot on external routing topics, such as BGP. To switch things up, today we’ll spend some time looking at internal forwarding decisions and how they shape traffic paths. Equal-Cost Multi-Path (ECMP) is an internal routing strategy where packets are distributed over multiple paths, each with the same “cost.”… Read More »