Update howto-create-access-control-list-for-network-to-network-interconnects.md

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Author: sushantjrao

articles/operator-nexus/howto-create-access-control-list-for-network-to-network-interconnects.md

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-# Access Control List (ACL) management for NNI and layer 3 isolation domain external networks
+# Creating Access Control List (ACL) management for NNI and layer 3 isolation domain external networks
 
 Access Control Lists (ACLs) are a set of rules that regulate inbound and outbound packet flow within a network. Azure's Nexus Network Fabric service offers an API-based mechanism to configure ACLs for network-to-network interconnects and layer 3 isolation domain external networks. This guide outlines the steps to create ACLs.