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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

DNS Resolution via iRules: NAME::lookup vs RESOLV::lookup

There are so many things that you can do with iRules that it can be pretty staggering to narrow down what the "most useful" commands are, but if I were given that task and absolutely had to, I would say that DNS resolution ranks up there... Read more
Average Rating: 4.9
3 Reviews

Non-English DNS Request filtering via iRules

When talking about iRules there are many themes that come up: application fluency, flexibility, control, high-availability. Among the themes that are often related to iRules one of the most important, in my estimation, is the extremely granular... Read more
0 Reviews