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How to Build Firewall Policies for East West Traffic


Following on from Professor Wool’s previous lesson, this new whiteboard lesson presents a step-by-step process for writing firewall policies for East-West traffic:

  • Deploy firewalls with the default setting of ‘allow’.
  • Use an iterative process of discovering and identifying the legitimate traffic, and then write explicit ‘allow’ rules for all valid business traffic that goes through the segment.
  • Change the default action from ‘allow’ to ‘deny,’ and start filtering traffic in the environment for real to increase security within East-West data center traffic.

Watch this new video to learn more:

Each Professor Wool course examines a core challenge and provides technical tips for managing security policies in evolving enterprise networks and data centers. Courses include:

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