摘要: Recent advances in electronics and wireless network technologies have offered us access to a new era where sensor networks formed by inter-connected small intelligent sensing devices provide the possibility form smart environments. Considering specialty of network, security threats possible countermeasures are quite different from those Internet Mobile Ad Hoc Networks (MANETs). On one hand, communication, large scale possibly human unattended deployment make attacks relatively easier perform. Furthermore, all features that nodes cheap thus application affordable, such as limited energy resource, bandwidth memory, also many well-developed mechanisms inappropriate networks. other user unfriendly interface makes physical compromise node difficult, simple communication profile intrusion detection easy perform, redundant type more fault-tolerant. Thus, we need complete redesign technique management.