Security is the major area of concern in communication channel. Security is very crucial in wireless sensor networks which are deployed in remote environments. Adversary can disrupt the communication within multi hop sensor networks by launching the attack. The common attacks which disrupt the communication of nodes are Packet dropping, Packet modification, Packet fake routing, badmouthing attack and Sybil attack. In this paper we considered these attacks and presented a solution to identify the attacks. Many approaches have been proposed to diminish these attacks, but very few methods can detect these attacks effectively. In this simple scheme, every node selects a parent node to forward the Packet towards base station or sink. Each node append its unique identity and trust to the parent as a path marker. It encrypts the bytes using a secret key generated and shared among the sink. The encrypted Packet is then forwarded to the parent node. Base station can identify the malicious nodes by using these unique identity and trust value.

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Usually in the form of parallel processing with parallel multi-processor systems are designed. For this reason irregular flow may occur with packages. When you' re tired and it all comes out in his NP (Network Processors) system, Reset depending on network performance is negatively affected and we delayed To do this, The design of processors working in parallel Packet transmission by avoiding any Packet reordering occur, If reordering, this time delay is minimal. Several algorithms have been proposed in recent years. In this paper, we will describe some of the fundamental concepts involved in NP architecture and algorithms Packet reordering in recent years, which causes delays are minimized Packet reordering, the evaluation will be compared.