Network Security Groups

  • Filter network traffic to and from Azure resources in an Azure virtual network.

  • Can contain multiple inbound and outbound security rules.

  • Enable you to filter traffic to and from resources by source and destination IP address, port, and protocol.

  • When you create a network security group, Azure creates a series of default rules to provide a baseline level of security.

  • You cannot remove the default rules, but you can override them by creating new rules with higher priorities.

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