Question 1070
A compromised web server scans database servers on the same flat subnet without traversing perimeter controls. Before changing security policy, what evidence should the engineer examine FIRST?
Explanation
Correct Answer
Inspect ingress and internal traffic paths, application dependencies, firewall capabilities, and current east-west allow rules. This checks the relevant condition before an engineer modifies production access or detection behavior. Perimeter inspection focuses north-south traffic; internal segmentation contains east-west lateral movement when workloads share a network. The controlled response would be: Place appropriate firewall or distributed policy enforcement around both internet-facing flows and lateral workload communications. Situation: A compromised web server scans database servers on the same flat subnet without traversing perimeter controls.
Incorrect Answers
Review fail-open or fail-closed expectations, high-availability topology, interface mode, IPS rule state, and packet counters. This evidence addresses Inline IPS availability and bypass behavior; it would not establish the primary issue here. The diagnostic evidence needed for this scenario is: Inspect ingress and internal traffic paths, application dependencies, firewall capabilities, and current east-west allow rules. Situation: A compromised web server scans database servers on the same flat subnet without traversing perimeter controls.
Inspect SNMP user groups, auth/priv settings, engine IDs, management ACLs, and failed polling logs. This evidence addresses SNMPv3 authenticated encrypted polling; it would not establish the primary issue here. The diagnostic evidence needed for this scenario is: Inspect ingress and internal traffic paths, application dependencies, firewall capabilities, and current east-west allow rules. Situation: A compromised web server scans database servers on the same flat subnet without traversing perimeter controls.
Review VTY/SSH configuration, management VRFs or ACLs, CoPP policy, routing adjacencies, and logging paths. This evidence addresses Router control plane and management isolation; it would not establish the primary issue here. The diagnostic evidence needed for this scenario is: Inspect ingress and internal traffic paths, application dependencies, firewall capabilities, and current east-west allow rules. Situation: A compromised web server scans database servers on the same flat subnet without traversing perimeter controls.


