A water utility asks whether UDP services can be ignored because TCP scans looked quiet. What should the tester explain?
Select an answer to reveal the explanation.
Short Explanation
TCP silence does not mean the neighborhood is empty — some important houses only answer the UDP doorbell. DNS, SNMP, and friends still matter when they are in scope. Skipping UDP is how big surfaces stay invisible.
Full Explanation
Many high-value network services speak UDP, including DNS, SNMP, and other management or name-resolution paths. Quiet TCP results do not prove those services are absent or out of scope. When RoE includes them, UDP enumeration is part of responsible coverage. Assuming obsolescence or automatic filtration leads to incomplete attack-surface maps.