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

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

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

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

As I stated last week in Part 1, iRules work on the live data between client and server, and iControl works on the management plane out of band to collect information or to modify or create configuration objects.  However, what if you could... Read more

There’s a plethora (yes, a plethora.  The Three Amigos taught me well.) of quality information constantly flowing here at DevCentral.  And whereas I might not have El Guapo’s superior intellect, I do have enough smarts to lean on my man... Read more

Introduction The LTM VE is a lifesaver when it comes to developing applications that use the iControl interface, or for development of iRules. My main (personal) use of it so far is the development of applications that use the iControl interface... Read more

With the BIG-IP GTM and 3-DNS products, location-based service has existed in the form of topology-based load balancing.  The possibilities grow exponentially in v10.1, as you now have the capabilities in GTM and LTM.  In this tech tip... Read more

Data Groups can be useful when writing iRules.  A data group is simply a group of related elements, such as a set of IP addresses, URI paths, or document extensions. When used in conjuction with the matchclass or findclass commands, you... Read more

iRules are the internal scripting language of the BIG-IP and can be used to attain full control of traffic flowing through your network.  But, did you know that you can automate the management of iRules across your Virtual Servers with... Read more