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iControl REST 101: Getting Started

So you’ve heard of this iControl REST thing, have you? You’re excited at the idea of a simple, light weight API that allows you programmatic access via tried and true tmsh commands with which you may already be familiar? Whether it was in the... Read more
Average Rating: 5.0
13 Reviews

Cipher Suite Practices and Pitfalls

Cipher Suite Practices and Pitfalls It seems like every time you turn around there is a new vulnerability to deal with, and some of them, such as Sweet32, have required altering cipher configurations for mitigation.  Still other users may... Read more
Average Rating: 4.9
11 Reviews

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: 4.9
11 Reviews

Security Sidebar: Improving Your SSL Labs Test Grade

Encrypt everything.  That's what Google Chairman Eric Schmidt recently said.  His comments were in response to various surveillance efforts that he considered government overreach and censorship.  His... Read more
Average Rating: 4.9
10 Reviews

iRule to stop SSLv3 connections

The below iRule written by my team will stop all SSLv3 connections. If you are not using the SSL termination capabilities of your BIG-IP and instead are doing TCP load balancing, then the iRule will protect your servers from the POODLE attack.If... Read more
Average Rating: 4.9
9 Reviews

Advanced iRules: Getting Started with iRules Procedures

As Colin so eloquently puts it in the procs overview in the iRules wiki: "Ladies and gentlemen, procs are now supported in iRules!" Yes, the rumors are true. As of BIG-IP version 11.4, you can move all that repetitive code into... Read more
Average Rating: 4.9
9 Reviews

#The101: Variables

If you've been following along in the new #The101: iRules series, it's time to add another building block to the framework of what iRules are and can do. If you're new, it would behoove you to start at the beginning and catch up. S... Read more
Average Rating: 4.9
9 Reviews

SSL Profiles Part 2: Certificates

This is part 2 in a series of tech tips on the F5 BIG-IP LTM SSL profiles. SSL Profiles: Part 1 SSL Profiles: Part 2 SSL Profiles: Part 3 SSL Profiles: Part 4   In part 1, we covered the basics of the TLS handshakes and th... Read more
Average Rating: 4.9
9 Reviews

The Top Ten Hardcore F5 Security Features in BIG-IP 13!

David Holmes, Skymall's runner-up for sexiest man over 55, reveals the ten most hardcore security features in versions 13.0 and 13.1. You don't want to miss this one. Read more
Average Rating: 4.9
8 Reviews

Lightboard Lessons: Why Super-NetOps

Super-NetOps is not a technology, it’s an evolutionary journey. Already featuring two complete classes on integrating NetOps expertise into the benefits of a DevOps world, this training program is poised to help the NetOps professional take a... Read more
Average Rating: 4.9
8 Reviews

Real Cryptography Has Curves: Making The Case For ECC

Consider yourself a fascinating person if you have ever heard the term Elliptic Curve Cryptography (ECC). Consider yourself a cryptographic crackerjack if you actually know what it does and how it all works. If you are a mere mortal like the rest of us, you might not understand every single aspect of ECC. Read more
Average Rating: 4.9
8 Reviews

Getting FREAK-y with BIG-IP

Since it’s been about 3 months since POODLE, we’re clearly overdue for another major vulnerability in SSL and/or TLS. Fortunately for us, the research team at SmackTLS has released details of the FREAK attack (aka OpenSSL CVE-2015-0204). We... Read more
Average Rating: 4.9
8 Reviews

SDN: Ask why, not what!

The problem A lot of vendors have an SDN strategy. Unfortunately, our customers tell us that these strategies tend to vary in coherency. SDN does have a place but there is a danger of it becoming a solution in search of a problem. Consequently,... Read more
Average Rating: 4.9
8 Reviews

v11.1–External File Access from iRules via iFiles

New in BIG-IP version 11.1 are iFiles, a feature that allows users to load files through tmsh or the GUI onto the BIG-IP which can be referenced from iRules. This has an immediate use case of supplanting several of our codeshare entries for sorr... Read more
Average Rating: 4.9
8 Reviews

HTTP Basic Access Authentication iRule Style

I started working on an administrator control panel for my previous Small URL Generator Tech Tip (part 1 and part 2) and realized that we probably didn’t want to make our Small URL statistics and controls viewable by everyone. That led me to make... Read more
Average Rating: 4.9
8 Reviews

iRules 101 - #17 – Mapping Protocol Fields with the Binary Scan Command

Introduction An iRule is a powerful and flexible feature of BIG-IP devices based on F5's exclusive TMOS architecture.  iRules provide you with unprecedented control to directly manipulate and manage any IP application traffic. ... Read more
Average Rating: 4.9
8 Reviews

iRules 101 - #11 - Events

The cornerstone of an iRule is the event.  An event is an iRule extension to TCL that enables modular based programming by allowing one to write code that executes only within the context of a certain state of a connection.  This article... Read more
Average Rating: 4.9
8 Reviews

iRules 101 - #03 - Variables

As you're beginning to get more comfortable reading and writing iRules, you're going to continue expanding your toolbox as well as the tasks you're going to tackle. If your experience is anything like mine then sooner, rather than... Read more
Average Rating: 4.9
8 Reviews

iRule Security 101 - #06 - HTTP Referer

In this article, I'm going to talk about the HTTP "Referer" header, how it's used, and how you can use iRules to ensure that an access request to a website is coming from where you want it to come from. Other articles in the... Read more
Average Rating: 4.9
8 Reviews

Protect your AWS API Gateway with F5 BIG-IP WAF

This article will help you deploy an F5 BIG-IP WAF in front of your AWS API Gateway to provide additional security. It shows how to deploy a basic WAF policy to protect your API Gateway, and you can expand from there to add Denial of Service or... Read more
Average Rating: 4.9
7 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
7 Reviews

HEIST Vulnerability – Overview and BIG-IP Mitigation

An interesting topic was talked about in the recent Black Hat conference. It is a new attack called HEIST (HTTP Encrypted Information can be Stolen through TCP-windows) which demonstrates how to extract sensitive data from any authenticated... Read more
Average Rating: 4.9
7 Reviews

Configuring OCSP Stapling on BIG-IP

When setting up an SSL connection the cert tells you its expiration, but how do you tell if the SSL Cert has been revoked? There are multiple ways to do this. The first is the Certificate Revocation List (CRL). When the client requests the CRL,... Read more
Average Rating: 4.9
7 Reviews

Mitigating BIND CVE-2015-5477 with iRules

While SOL16909: BIND vulnerability CVE-2015-5477 is the official SOL, and the best mitigation is, of course, upgrading to a fixed versions of TMOS, what if you can't upgrade right now?  The best option is to not use BIND at all.... Read more
Average Rating: 4.9
7 Reviews

ASM – Rapid Deployment

Hallo liebe Leser, heute möchte ich mich einem ASM (Application Security Manager) Thema, also der WebApplication Firewall von F5 widmen. Sehr oft erlebe ich bei Kunden die Anforderung Webapplikationen vor Angriffen zu schützen. ... Read more
Average Rating: 4.9
7 Reviews