What is a jump server?

A jump server, also known as a jump host or bastion host, is a computer on a network used to access and manage devices within a separate secure network. It serves as a single point of access that administrators can use to connect to other systems in the network that are not directly accessible from outside the network perimeter.

Jump servers are commonly used in environments with strict security requirements to control and monitor access to critical systems and data. By requiring users to first connect to the jump server before accessing other systems, organizations can enforce access controls, monitor user activity, and prevent unauthorized access.

Some key features of a jump server include:

1. Multi-factor authentication: Users connecting to the jump server typically need to provide multiple forms of authentication to verify their identity before accessing other systems.
2. Restricted access: Access to the jump server is limited to authorized users only, and permissions can be finely tuned to restrict access to specific systems or resources.
3. Session recording: Administrators can monitor and record user sessions on the jump server to ensure compliance with security policies and investigate any suspicious activity.
4. Privileged access management: Jump servers are often used in conjunction with privileged access management tools to automate and streamline the process of granting and revoking access to critical systems.

Overall, a jump server is an essential component of a secure network infrastructure, providing a secure gateway for administrators to access and manage resources within a protected network environment.