Professor Avishai Wool, CTO at AlgoSec, looks at how organizations can ensure all of their firewalls work together consistently and cohesively across large heterogenous networks. Managing such a mix is a challenge because each firewall, and each vendors products, use different syntax and semantics for creating security policies. Each provider has a different semantic model of what you can filter and where those controls are applied; these will also differ from the on-premise firewall.”]