Azure JIT VM Access¶
Azure Just-In-Time (JIT) VM Access is a feature of Microsoft Defender for Cloud that helps protect Azure virtual machines (VMs) from unauthorized network access. It locks down inbound traffic to VMs, reducing exposure to attacks while providing controlled access when needed.
Use Case: Enhanced Security for VM Access¶
A company needs to secure Azure VMs from unauthorized access while allowing legitimate users to connect when necessary. Azure JIT VM Access controls and monitors access to VMs.
Implementation¶
- Enable JIT Access: Enable JIT on VMs via the Azure portal or programmatically. Configure the JIT policy to specify protected ports and maximum access duration.
- Request Access: Users request access through the portal or programmatically, specifying ports, source IP, and duration.
- Approve Access: Requests are reviewed and approved based on permissions. NSG rules are configured to allow inbound traffic for the specified duration.
- Monitor and Audit: Use Azure Monitor and Defender for Cloud to track and audit JIT access activity.
Well-Architected Framework Considerations¶
- Cost Optimization: Pay-as-you-go pricing with Microsoft Defender for Cloud.
- Operational Excellence: Automated access control and monitoring.
- Performance Efficiency: Access only when needed, reducing attack surface.
- Reliability: Controlled and monitored access enhances reliability.
- Security: RBAC, encryption, and Azure Active Directory integration.