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These Are Not The Scrapes You're Looking For - Session Anomalies

In my first article in this series, I discussed web scraping -- what it is, why people do it, and why it could be harmful.  My second article outlined the details of bot detection and how the ASM blocks against these pesky littl... Read more
1 Review

More Web Scraping - Bot Detection

In my last article, I discussed the issue of web scraping and why it could be a problem for many individuals and/or companies.  In this article, we will dive into some of the technical details regarding bots and how the BIG-IP Application... Read more
2 Reviews

Web Scraping - Data Collection or Illegal Activity?

Web Scraping Defined   We've all heard the term "web scraping" but what is this thing and why should we really care about it?  Web scraping refers to an application that is programmed to simulate human web surfing b... Read more
0 Reviews

Interactive iControl with bigsuds

A couple months back we released a new iControl library for python called bigsuds. The introductory article for bigsuds covered some differences/enhancements in syntax between it and pycontrol versions one and two. Last week, I received an updat... Read more
1 Review

Getting Started with Bigsuds–a New Python Library for iControl

I imagine the progression for you, the reader, will be something like this in the first six- or seven-hundred milliseconds after reading the title: Oh cool! Wait, what? Don’t we already have like two libraries for python? Really, a third library... Read more
Average Rating: 4.6
10 Reviews

DevCentral Architecture

Everyone has surely (don’t call me Shirley!) at least been exposed to THE CLOUD by now.  Whether it’s the—I’ll go with interesting—“to the cloud!” commercials or down in the nuts and bolts of hypervisors and programmatic interfaces for... Read more
1 Review

Automagic Vulnerability Scanner Integration: Cenzic Style!

Welcome to the future!  Hoverboards for all,  new clear cola, skateboarding monkeys, and integrat... Read more
0 Reviews

F5 Security on Owasp Top 10: Injections

->Part of the F5/Owasp Top Ten Series    At the top of the  Owasp list is Injections. Their definition is “Injection flaws, such as SQL, OS, and LDAP injection, occur when untrusted data is sent to an interpreter as part of ... Read more
1 Review

F5 Security on Owasp Top 10

Everyone is familiar with the Owasp Top 10. Below, you will find some notes on the Top 10, as well as ways to mitigate these potential threats to your environment.  You can... Read more
Average Rating: 5.0
12 Reviews

Managing iApp template files with iControl

Templates An iApp is a user-customizable framework for deploying applications. It consists of three components: Templates, Application Services, and Analytics. An iApp Template is where the application is described and the objects (required... Read more
0 Reviews

Controlling a Pool Members Ratio and Priority Group with iControl

A Little Background A question came in through the iControl forums about controlling a pool members ratio and priority programmatically.   The issue really involves how the API’s use multi-dimensional arrays but I thought it would be a... Read more
2 Reviews

Managing Ramcache Entries with Pycontrol

A DevCentral user posted a question in the forums asking for verification of an attribute on the RamCacheKey structure. The maximum_responses attribute should be a long integer. With his C# code, the maximum_responses returned from his iContro... Read more
0 Reviews

APM Session Invalidation Using ASM

Introduction: Whenever customers expose their internal resources on the Web using VPNs or SSL VPNS there is still some concern over what type of traffic comes through the connection. In order to assist with these concerns we can provide a combine... Read more
Average Rating: 4.9
3 Reviews

iControl 101 - #24 - Folders

SyntaxHighlighter.all();Bucket Way back in time (well, not so way back), configuration objects were stored in one location in the configuration.  For the sake of this article, we’ll call this the root “bucket”.  This worked fine for... Read more
0 Reviews

Ruby and iControl: Migrating Virtual Addresses Using ARP

Introduction Ever wanted to “failover” a virtual server to an LTM that is not part of the same HA (high availability) pair? This is a common occurrence for any engineer that has ever had to upgrade their BIG-IP hardware platform or been part of a... Read more
0 Reviews

Automating Web App Deployments with Opscode Chef and iControl

Chef is a systems integration framework developed here in Seattle by Opscode. It provides a number of configuration management facilities for deploying systems rapidly and consistently. For instance, if you want 150 web servers configur... Read more
2 Reviews

Ruby and iControl: Remote BIG-IP Software Image Installation

Overview I did a lot of BIG-IP installs and upgrades while I worked in the IT field. Most BIG-IP administrators are familiar with the process: go to downloads.f5.com, get the software image ISO, copy it to your target system, SSH to the BIG-IP (or... Read more
0 Reviews

Getting Started with Splunk for F5

Pete Silva & Lori MacVittie both had blog posts last week featuring the F5 Application for Splunk, so I thought I’d take the opportunity to get Splunk installed and check it out.  In this first part, I’ll cover the installation process... Read more
Average Rating: 4.9
5 Reviews

Ruby and iControl: Automating Private Key and Certificate Signing Request Creation

Overview If you’re like most of our customers, you’re probably offloading SSL on your BIG-IPs. There is a large performance benefit to this PKI management strategy, but there is also the simplicity of being able to create, update, and manage SSL... Read more
0 Reviews

Ruby and iControl: Building A Maintenance Page iRule On The Fly

Overview This week we are continuing with our Ruby and iControl series, but we’re going to mix in some iRule spice. As a previous IT systems engineer here at F5 as well as startups, it is a common request to shunt a site to a maintenance page... Read more
0 Reviews

Ruby and iControl: Distilling SSL Certificate Information from SOAP::Mapping::Objects

We hope by now that you have gotten a running start with our Ruby iControl libraries. We have posted a few other Tech Tips on Ruby and iControl,  but have not touched on the retrieval of information from the BIG-IP. In this Tech Tip, we will... Read more
0 Reviews

Ruby and iControl: Understanding Complex Type Syntax

Anyone who has worked with SOAP knows it can make a lot of things easier, but it is not without its hurdles. Interpreting complex type syntax for use with a SOAP driver can present one of the largest headaches for a web services developer. In this... Read more
0 Reviews

BIG-IP Configuration Visualizer - iControl Style

I posted almost two years ago to the day on a cool tool called BIG-IP Config Visualizer, or BCV, that one of our field engineers put together that utilizes a BIG-IP config parser and GraphViz to create images visualizing the relationship o... Read more
0 Reviews

Getting Started With Ruby and iControl

Here on DevCentral we’ve released libraries for a number of the big languages from Java and Perl to Powershell. Up until now there has not been much love for Ruby. Well, that’s all about to change: enter the new iControl Ruby Library. This proj... Read more
2 Reviews

Monitor Your iRule Performance with iControl and Google-O-Meter Charts

iRule performance has long been a question our users have asked about.  We get questions all the time about how to determine what impact a specific iRule has on the normal operation of the BIG-IP’s they are running on.  The question is a... Read more
0 Reviews