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Lightboard Lessons: What is HTTP?

In this Lightboard Lesson, I light up some #basics about HTTP. HTTP defines the structure of messages between web components such as browser or command line clients, servers like Apache or Nginx, and proxies like the BIG-IP. ps Related: What is... Read more
0 Reviews

What is HTTP Part II - Underlying Protocols

Last week in part one of this series, we took the 50,000 foot view of the HTTP protocol. HTTP defines the structure of message transfer for web resources, but doesn’t have anything to say about or do with the underlying infrastructure (through... Read more
1 Review

Nessus 6 XSLT Conversion for ASM Generic Scanner Import

Nessus 6 XSLT Conversion for ASM Generic Scanner Schema Import Read more
Average Rating: 4.9
5 Reviews

What is HTTP?

tl;dr - The Hypertext Transfer Protocol, or HTTP, is the predominant tool in the transferring of resources on the web, and a "must-know" for many application delivery concepts utilized on BIG-IP HTTP defines the structure of message... Read more
Average Rating: 4.8
6 Reviews

Lightboard Lessons: CPU Hyper-Threads and TMM

In this episode of Lightboard Lessons, Jason details how BIG-IP’s Traffic Management Microkernel (TMM) utilizes Intel’s Hyper-Threading Technology and the impacts depending on the version of TMOS. In versions before 11.5, each hyper-thread... Read more
Average Rating: 4.9
5 Reviews

DevCentral’s Featured Member for September – Rob Carr

Rob Carr is a Senior Trainer/Professional Services Consultant with Red Education Pty in Australia, covering the Oceania and Asia markets. He has done training and engagements from New Zealand to Taiwan and points in between. About 60% of his time... Read more
1 Review

Tightening the Security of HTTP Traffic Part 3

Part 3:   Headers to remove   Server and X-Powered-by headers The Server and X-Powered-By headers:  Should be removed or changed These are added by default by some web servers such as apache, nginx, Express,…   Example:... Read more
0 Reviews

Lightboard Lessons: What is BIG-IQ?

In this Lightboard Lesson, I light up many of the tasks you can do with BIG-IQ, BIG-IQ centralizes management, licensing, monitoring, and analytics for your dispersed BIG-IP infrastructure. If you have more than a few F5 BIG-IP's within your... Read more
0 Reviews

Tightening the Security of HTTP Traffic Part 2

This is the second part of this article which provides guidelines for tightening the security of http traffic by leveraging the power of F5 Big-IP and  iRules to include the latest HTTP security headers to all HTTP responses. Read more
1 Review

Tightening the Security of HTTP Traffic part 1

In this article, I will give an overview of some important headers that can be added to HTTP responses in order to improve the security web applications. Read more
Average Rating: 4.9
6 Reviews

Practical Protocol Primer: How an app proxy works with HTTP

The introduction of containers and clustering, with its self-contained ecosystem of load balancers, ingress controllers, and proxies can be confusing. That’s because they insert themselves into a well-understood, connection-oriented flow (TCP)... Read more
0 Reviews

I’ve Successfully Failed the F5 Certification 201-TMOS Administration Exam

Yup, you read that right. I did not pass the F5 Certified BIG-IP Administrator test I took while at F5 Agility 2017. And I’m not ashamed since it was a challenging test and I will be trying again. Sure, I went through Eric Mitchell’s (F5er)... Read more
2 Reviews

BIG-IP APM with Horizon 7.x HTML5 gets a Hotfix For Updated Code

Provide a Technical update on some new hotfixes that were rolled out to resolve some issues with HTML5 connectivity with Horizon 7.1 and 7.2 with APM. Read more
0 Reviews

Lightboard Lessons: F5 BIG-IP DNS (GTM) iQuery Protocol Overview

In this episode of Lightboard Lessons, I introduce iQuery, the F5 proprietary protocol utilized by BIG-IP DNS to exchange system configuration with other BIG-IP DNS systems and performance metrics with all other BIG-IP systems configured to do... Read more
Average Rating: 4.9
4 Reviews

Create a BIG-IP HA Pair in Azure

Use an Azure ARM template to create a high availability (active-standby) pair of BIG-IP VE instances in Microsoft Azure. When one BIG-IP VE goes standby, the other becomes active, the virtual server address is reassigned from one external NIC to... Read more
0 Reviews

Lightboard Lessons: BIG-IP Cookie Persistence Values

Learn how the BIG-IP calculates cookie persistence values! Read more
Average Rating: 4.5
3 Reviews

DevCentral’s Featured Member for August – Piotr Lewandowski

Piotr Lewandowski has been working in IT for well over 20 years – and not really conscious decision to go this way – just blind luck. He started in the era without Internet…yes, not so long ago it was possible to live without Internet J…and IBM... Read more
Average Rating: 4.9
3 Reviews

TurboFlex, Application Delivery, and Tires: What's the Common Thread? (Tread?)

A brief history F5's involvement with ASICs and FPGAs and how TurboFlex makes optimizing for applications fast and simple. Read more
0 Reviews

Zero to F5-CTS LTM Certified!

It’s been nearly a year since the DevCentral team wrestled the 101 exam to the mat at Agility 2016. This last week, I finished the road to the F5 Certified Technology Specialist Local Traffic Manager (F5-CTS LTM) certification, with a passing... Read more
Average Rating: 4.8
6 Reviews

BIG-IP Upgrades Part 4 - Performing the Software Installation

On a Big-IP in the Standby state (if there are more than one Big-IP in the device group), perform the following:Note: Verify the device is still in the Standby state and not Offline (unless purposely) or Active. Log in to the Configuration... Read more
Average Rating: 4.9
5 Reviews

BIG-IP Upgrades Part 3 - Versions, Misconceptions and a Back-Out Plan

To What Big-IP Versions Can I Upgrade? Big-IP 10.x can be upgraded to any version of 11.x given your hardware supports the new version. Big-IP 11.x can be upgraded to any version of 12.x given your hardware supports the new version. You canno... Read more
Average Rating: 4.9
4 Reviews

BIG-IP Upgrades Part 2 - Upgrade Behavior

How Big-IP Upgrades Work Software images can be installed to any software volume except the running volume. This behavior ensures the running software volume is available should a need arise to revert to the prior Big-IP version and... Read more
Average Rating: 4.9
4 Reviews

BIG-IP Upgrades Part 1 - Preparation

The information is this series is meant to help a Big-IP administrator complete a software upgrade. I have assisted with hundreds of Big-IP upgrades and hope to help you complete the task as smoothly as possible. Read more
Average Rating: 4.9
6 Reviews

What are F5 Access and BIG-IP Edge Clients?

F5 Access and BIG-IP Edge are VPN clients that connect to APM access policies for L3 network connectivity. Read more
2 Reviews

F5 BIG-IP + Cisco Tetration: Application Centric Visibility

F5 BIG-IP provides Cisco Tetration L4-L7 insight with the integration of Tetration Open API. Read more
0 Reviews