Azure Networking Cookbook

How it works...

All outbound traffic is allowed by default, regardless of where it is going. If we want to explicitly deny traffic on a specific port, we need to create a rule to do so. Make sure you set the priority right when creating rules. Rules with the highest priority (lower number) are processed first, so if you have two rules where one is denying traffic and one is allowing it, the rule with higher priority will apply.