Performance Metric of the Month: Retransmission Timeouts (RTOs) and...
It’s a new year and a great time to make changes for the better. In an effort to rid the world of needless network and application performance slowdowns, we turn to retransmission timeouts (RTOs). What...
View ArticleApplication Performance Management (APM) + Database Activity Monitoring...
Adrian Lane, CTO of Securosis, recently wrote an article titled Database Monitoring Best Practices: Using DAM Tools for SearchSecurity.com. The article plays on a security angle but provides a nice...
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Performance Metric of the Month: PAWS Dropped SYNs and Network Address...
In past blog posts, we’ve talked about performance metrics, such as TCP retransmission timeouts (RTOs) and database performance metrics, which help IT teams solve hard-to-pinpoint issues before they...
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Performance Metric of the Month: CIFS Errors
CIFS Errors: The ExtraHop system provides storage performance details not contained in event logs. September’s Performance Metric of the Month (PMM) focuses on CIFS errors for networked storage, but...
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Performance Metric of the Month: Packet Loss, Retransmission Timeouts (RTOs)...
Retransmission timeout and round-trip time metrics can reveal virtual packet loss. This month’s Performance Metric turns to retransmission timeouts (RTOs) and round-trip times, particularly for...
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TCP: Where the Network Meets the Application, Part 1
This post is written by Eric Thomas, Principal Solutions Architect at ExtraHop Networks. Many organizations struggle to find the right level of instrumentation to monitor the performance of their...
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TCP: Where the Network Meets the Application, Part 2
This post is written by Eric Thomas, Principal Solutions Architect at ExtraHop Networks. In Part 1 of this two-part series, we imagined the perfect framework for no-impact monitoring of an application...
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Microsoft’s 1024-Bit RSA Key-Size Requirement and Other IT Burdens
This post is written by Cal Jewell, a Senior Technical Trainer at ExtraHop. In June, Microsoft announced that it would release an update blocking the use of RSA keys using less than 1024-bit...
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Performance Metric of the Month: HTTP Payload Details
For our November performance metric of the month, we’re looking at HTTP payloads. Hypertext Transfer Protocol (HTTP) is a tremendously important technology layer that supports many critical services....
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Storage Performance Monitoring and the Need for Holistic Visibility
The Service Level Agreement is always the first casualty in the war to assign blame. Most IT organizations monitor their applications and infrastructure in an extremely disjointed manner, with each...
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Six Reasons Your Security Toolset Needs to Include Wire Data Analytics
Unlike IDS/IPS that use signatures, ExtraHop identifies threats by providing context—trends and real historical activity. Every year, the stakes get higher for IT organizations trying to prevent data...
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Transaction Tracing for Web Gateways, Load Balancers, and Other Proxies
As with the Perl language, ExtraHop makes easy things easy and hard things possible with Application Inspection Triggers, a programmatic interface to the Context and Correlation Engine. Larry Wall, the...
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HTTP Compression and Other ADC Optimization Wins
Most enterprise IT organizations use application delivery controllers (ADCs) to improve the availability, speed, and efficiency of the IT infrastructure. However, ADCs offer limited metrics to help in...
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Detect Heartbleed Exploits with ExtraHop’s Free Download
If you are responsible for secure web-based services, it is likely that you are scrambling to identify servers using OpenSSL versions 1.0.1 through 1.0.1f, trying to patch those servers, and reissuing...
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Tears of Joy: Fixing Retail Web Application Performance
Vincent Yesue is a member of the ExtraHop Solutions Architecture team. In the retail industry, slow web application performance means abandoned shopping carts online, and long lines and frustrated...
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See Which World Cup Matches Are Popular in Your Office
There’s some World Cup mania taking hold at ExtraHop HQ, as is likely in offices around the world. Our technical marketing engineering (TME) team expressed their enthusiasm in a unique way—by building...
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Troubleshooting Network Issues for Your Web Application
Troubleshooting poor web application performance can be frustrating because you don’t know where to look first. That’s why we created the web application performance troubleshooting guide (no...
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What Caused My Web Server to Crash?
Welcome back to our Web Application Troubleshooting series, where we walk through how to diagnose common web application performance issues including network switch reboots and devices soaking up...
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Neuter the POODLE: Detect All SSLv3 Clients and Servers with ExtraHop
Following on the heels of the Heartbleed and Shellshock exploits, the new POODLE vulnerability in SSL version 3.0 (SSLv3) is the latest to require IT teams to identify and patch vulnerable systems....
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Detect and Track HTTP-based C&C Traffic for Backoff Malware
Roughly 1,000 retail companies have been impacted by the Backoff point-of-sale malware with costs related to data breaches totaling more than $150 million, according to a recent eWEEK article. If your...
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