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Security Irules 101: DNS Gravitational Disturbance

Introduction iRules are a powerful tool in the F5 administrators arsenal. They allow administrators to adapt and customize the F5 to their needs. They provide extensive power for security engineers as well. We’ve decided it’s time to revisit... Read more
1 Review

v11.1: DNS Blackhole with iRules

Back in October, I attended a Security B-Sides event in Jefferson City (review here). One of the presenters (@bethayoung) talked about poisoning the internal DNS intentionally for known purveyors of all things bad. I indicated in my write-up tha... Read more
Average Rating: 4.9
3 Reviews

Multiple Certs, One VIP: TLS Server Name Indication via iRules

An age old question that we’ve seen time and time again in the iRules forums here on DevCentral is “How can I use iRules to manage multiple SSL certs on one VIP"?”. The answer has always historically been “I’m sorry, you can’t.”. The... Read more
0 Reviews

Can iRules fix my cert mismatch errors?

SSL encryption as a means of security on the web isn't a new concept. We've talked about it here on DevCentral many times, and it's as pedestrian a concept as a corndog on the boardwalk to most internet users. We've talked about... Read more
0 Reviews

RADIUS Load Balancing with iRules

What is RADIUS? “Remote Authentication Dial In User Service” or RADIUS is a very mature and widely implemented protocol for exchanging ”Triple A” or “Authentication, Authorization and Accounting” information. RADIUS is a relatively simple,... Read more
1 Review

Radius Aware Load Balancing via iRules

RADIUS is very popular authentication method that is being widely used in amongst some of the top service providers around the world, not to mention in deployments ranging from enterprise corporate environments to clustered mail systems and back.... Read more
0 Reviews

Offload Authentication with iRules

As the applications being driven by webservers become more and more complex, Applications Developers are always looking for ways to increase efficiency or do away with unneeded processing time. One of the ways that I believe that Applications can... Read more
1 Review