A jump server is a dedicated server that acts as a secure gateway between two or more network segments with different security levels.
→ Jump servers enforce the principle of least privilege by acting as the only entry point to a more secure network zone. Administrators and other authorized users must first connect to the jump server before accessing any systems within the restricted zone.
→ All access attempts to the jump server and subsequent connections to other systems are logged. This allows for centralized monitoring and auditing of user activities, making it easier to detect and respond to security incidents.
→ Since only the jump server is exposed to the less secure network, the attack surface is significantly reduced. This makes it harder for attackers to exploit vulnerabilities and gain unauthorized access.
A) refers to an intrusion detection system (IDS), which monitors network traffic for suspicious activities, differing from the access facilitation role of a jump server.
B) describes a public-facing web server, which is typically placed in a DMZ to provide services to external users, not serving as an intermediary for secure internal access.
D) pertains to a virtual private network (VPN) server, which provides encrypted remote access to internal resources, but does not function as a controlled gateway between distinct security zones like a jump server.