Recent ransomware attacks like Wanna and Petya have spread largely unchecked through corporate networks in recent months, extorting money to restore your data and regain control of your computers. Modern firewalls are purpose-built to defend against these kinds of attacks, but they need to be given an opportunity to do their job. In this whitepaper we’ll discuss how these attacks work, how they can be stopped, and best practices for configuring your firewall and network to give you the best protection possible.