Shorter waiting time does not always mean better scanning. Strike a measurable balance between speed and the need to be able to find slow-responding devices.
Basic approach
The scanner waits a certain amount of time for a response; When time expires, it may consider the result as incomplete or unanswered. Local wired network, hot Wi-Fi, and VPN do not have the same latency distribution. A single constant value does not give the same accuracy in all environments.
Application steps
- Select several known working devices as the initial control group.
- Measure the same scope under similar conditions with two timeout settings.
- Compare the number of devices found, retries, and timeout with the total time.
Practical example
If a device on the VPN responds after 350 ms, it may miss the 100 ms limit. Check that the additional devices that appear with longer use are really the new response; Do not confuse with old cache records.
Interpret the result correctly
Endless waiting is not the solution either; It makes the interface and expiry time unpredictable. Opt for limited retries and stoppable jobs. It is misleading to show only seconds in a performance comparison without accounting for scope, protocol, timeout, and device conditions.
Source and follow-up reading
Protocol or command details: Nmap — Timing and Performance. The steps and example scenario are IPScans editorial narrative.