Finally, the network behavior metrics on the ratio between ICMP request packets and reply packets is defined and the ICMP scan attack in the CERNET network is monitored real timely.
The simulation result shows, this paper put forward defend tactics can effective defend hostile node attack to DoS that network mobilize, and making the service efficiency of the network more than 98%, it is 1.83% that normal request packets the average probability abandoned, prevent mechanism average time expenses account for network of overhead only 6.5%.
The simulation result shows, This paper put forward defend tactics can effective defend hostile node attack to DoS that network mobilize, and making the service ef-ficiency of the network more than 98%, It is 1.83% that normal request packets the average probability abandoned, pre-vent mechanism average time expenses account for network of overhead only 6.5%.
The intruder broadcasts mass Route Request packets to exhaust the communication bandwidth and node resource so that the valid communication can not be kept. After analyzed Ad Hoc Flooding Attack, we develop Flooding Attack Prevention (FAP), a generic defense against the Ad Hoc Flooding Attack in mobile Ad Hoc networks.
Ad Hoc Flooding攻击是通过在网络中泛洪发送超量路由查询报文,大量地占用网络通信及节点资源,以至于阻塞节点正常的通信。
In the formal system, the hosts send the request packets by the broadcast communication methods, whereas deliver the responsemessages with the point-to-point mode.
A pseudo-Bayesian ALOHA algorithm with multiple priorities is proposed in this paper to reduce the waiting time of delay sensitive request packets in a multimedia environment.
Our results indicate that despite its improvement in reducing route request packets, CBRP has a higher overhead than DSR because of its periodic hello messages while AODV's end-to-end packet delay is the shortest when compared to DSR and CBRP.
Real-Time anomaly detection is a highlighted topic of network security research in recent years. Based on statistics character of traffic in a large-scale network, the steady metrics that can estimated network behavior are found and a sampling measurement model is presented in this paper. According to the center limited theory and hypothesis test, a real-time detection model on anomaly behavior of network traffic is built. Finally, the network behavior metrics on the ratio between ICMP request pack...
The wireless ATM MAC protocol based on MDR-TDMA consists of two processes: the access of request packets and the allocation of information slots. For the first process,self-adaptive framed Pseudo-Bayesian algorithm is adopted to realize the optimal throughput of the request packet with mixed priorities. For the second process, the Minmax algorithm is used to allocate bandwidth for VBR services and the simulation result is compared with that of the liner proportional algorithm.
The predominant solution to connect campus network with multiple ISPs is based on NAT and source address policy routing,which is deemed as poor performance,deficiency application supporting while lack of sophistication.Study on the demand of large scale campus networks gives such finding.An alternate architecture based on NAT and standard routing mechanism is devised based on a new topology structure and NAT policy.Request packets originated from campus network can be distinguished from response...