Azure Just-in-Time (JIT) Virtual Machine (VM) Access is a security feature in Azure that provides temporary and controlled access to virtual machines. JIT access can be used to reduce the attack surface of virtual machines by limiting the amount of time that administrative ports are open, thereby reducing the risk of unauthorized access and data breaches.
With JIT access, access to virtual machines is granted only when it is needed, for a specified amount of time, and only to authorized users. JIT access works by creating a request to open the required ports for a specified amount of time, which is reviewed and approved by a designated security administrator before access is granted. Once access is granted, the virtual machine can be accessed using Remote Desktop Protocol (RDP) or Secure Shell (SSH), and the ports are closed automatically when the specified time period expires.
JIT access can be configured for individual virtual machines or for entire virtual networks. To enable JIT access, users must first configure the required settings in the Azure Security Center, which includes configuring the ports that need to be opened, the duration of the access, and the authorized users who are allowed to request JIT access. Once these settings are configured, the user can request JIT access by specifying the virtual machine, the ports that need to be opened, and the duration of the access.
JIT access provides several benefits, including:
- Improved security: JIT access reduces the attack surface of virtual machines by limiting the amount of time that administrative ports are open.
- Reduced risk of data breaches: By limiting access to virtual machines to authorized users for a specified amount of time, JIT access reduces the risk of unauthorized access and data breaches.
- Enhanced compliance: JIT access can help organizations meet compliance requirements by providing a more secure and controlled access method to virtual machines.
In summary, Azure Just-in-Time Virtual Machine Access is a security feature that provides temporary and controlled access to virtual machines, reducing the risk of unauthorized access and data breaches.
