Your answer would be: a hand pointer.
Answer:
u can see the answer in this picture
Is an example of reactive, signature based IDS/IPS
Reactive, signature based IDPS technology is one of the many methodologies used to detect attacks. In a signature based IDS, a misuse detection identifies intrusions by watching for patterns of traffic and compare them against observed events or a database of signatures from known threats. Reactive IDS/IPS, on the other hand, will not only detect and alert malicious traffic but also take pre-defined proactive actions. Using MRTG, Ntop, and SNMPC in routers will monitor traffic and help network managers easily see issues like DOS attacks and security problems.
The Warsaw Pact.
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