Speaking of Malware
The Strongarm Blog

How to Secure an Open DNS Resolver

December 22, 2016 | By Mark Zealey

One of the challenges of running an open DNS resolver is that it can be used in a number of different attacks, compared to a server that is only allowed access from a known set of IPs. One of the most well known is the...


How to Conduct Linux Firewall Performance Testing

August 8, 2016 | By Mark Zealey

As we mentioned in a previous post, at Strongarm, we love the Linux firewall. While a lot of effort has gone into making the firewall highly flexible and suitable for nearly every use case, there is very little information out there about the actual performance...


How to Make a Linux Stateless Firewall for Performance and Resilience

July 14, 2016 | By Mark Zealey

When we were building Strongarm, we came across an interesting challenge that we hadn’t seen addressed before: how to make a Linux stateless firewall that guarantees performance and resilience. Below, I’ll explain how we went about exploring and eventually solving this problem and offer some...