Secure Azure VM Access Without Public Ports: Azure Bastion Guide

Short summary

Azure Bastion is a managed service that enables secure RDP/SSH access to Azure VMs without opening inbound ports, significantly reducing attack surface from brute-force attacks. Implementation requires a dedicated AzureBastionSubnet, a Bastion host, and no public IP on the target VM; all connections route through Azure's backbone network. Step-by-step CLI examples demonstrate provisioning a VNet, NSG, Linux VM, and Bastion access in under 20 commands.

• •Azure Bastion provides secure VM access without exposing public ports
• •Requires dedicated subnet and Bastion host; connections route internally
• •Complete CLI walkthrough for VNet, NSG, and VM provisioning included

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