MILCOM 2002. Proceedings最新文献_第4页

Data embedding for secure communications 用于安全通信的数据嵌入

MILCOM 2002. Proceedings Pub Date : 2002-10-07 DOI: 10.1109/MILCOM.2002.1180476

J. Gibson, M.G. Kokes

引用次数: 4

Towards the scalable implementation of a user level anomaly detection system 面向用户级异常检测系统的可扩展实现

MILCOM 2002. Proceedings Pub Date : 2002-10-07 DOI: 10.1109/MILCOM.2002.1179706

R. Chinchani, S. Upadhyaya, K. Kwiat

{"title":"Towards the scalable implementation of a user level anomaly detection system","authors":"R. Chinchani, S. Upadhyaya, K. Kwiat","doi":"10.1109/MILCOM.2002.1179706","DOIUrl":"https://doi.org/10.1109/MILCOM.2002.1179706","url":null,"abstract":"Traditional intrusion detection systems can be broadly classified as misuse and anomaly detectors. Misuse detectors attempt detection by matching the current system/user activity against known signatures and patterns. As opposed to this, anomaly detection works by developing a reference graph and comparing the ongoing activity against it. Any significant deviation is flagged as an intrusion. Anomaly detection is more promising because of its potential to detect unseen types of attacks. However, both techniques have conventionally relied on audit trails sampled deep inside the system via probes and the sheer size of the data allows only after-the-fact and off line detection. In recent past, there have been efforts to capture the semantics of system activity for more rapid detection and this can typically be done at levels closer to the user. In our earlier works related to this effort, we presented a scheme and a reasoning framework to detect intrusions based on the encapsulated user intent. This paper addresses the scalability and implementation aspects of the system by introducing concepts such as workspaces and meta-operations. Although this security system is a general anomaly detection system, it is amenable to operator fault recovery. While encryption provides secure communication channels, it leaves the end points exposed. Our security system has the additional capability of handling insider attacks relevant in this context.","PeriodicalId":191931,"journal":{"name":"MILCOM 2002. Proceedings","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133768400","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 20

Reliable multicast for flat hierarchy networks based on adaptive air caching 基于自适应空中缓存的平面分层网络可靠组播

MILCOM 2002. Proceedings Pub Date : 2002-10-07 DOI: 10.1109/MILCOM.2002.1179666

K. Manousakis, J. Baras

{"title":"Reliable multicast for flat hierarchy networks based on adaptive air caching","authors":"K. Manousakis, J. Baras","doi":"10.1109/MILCOM.2002.1179666","DOIUrl":"https://doi.org/10.1109/MILCOM.2002.1179666","url":null,"abstract":"The evolution of satellite networks in the commercial and military world has pushed the research community towards the solution of important problems related to this kind of network. One of those important problems is how to design an efficient reliable multicast protocol in a network where there is no hierarchy involved, and the link presents characteristics like high propagation delay and high BER. The existing reliable multicast protocols cannot be applied in the case of flat hierarchy networks, since those are based on intermediate receivers and local recovery techniques. So, we introduce the air caching technique, which serves as a fast access memory that is realized on the air and contains packets for the recovery of corrupted or erroneous data packets at the receivers. In this paper we present some of the protocols that we designed and are based on air caching combined with FEC and ARQ. In the past we have presented protocols that are based on those techniques but the characteristics of the air cache were constant. In this paper we propose RM protocols, which are based on adaptive air caching, where the size and/or content of the air cache change dynamically based on feedback information. Our goal is to improve the delay and/or bandwidth usage characteristics of the nonadaptive air cache RM protocols.","PeriodicalId":191931,"journal":{"name":"MILCOM 2002. Proceedings","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124237262","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Multiple-access interference suppression for OFDM systems based on Doppler shifts 基于多普勒频移的OFDM系统多址干扰抑制

MILCOM 2002. Proceedings Pub Date : 2002-10-07 DOI: 10.1109/MILCOM.2002.1180505

J. Namgoong, T. Wong, J. Lehnert

引用次数: 1

A QoS framework for heavy-tailed traffic over the wireless Internet 一种用于无线互联网上大量流量的QoS框架

MILCOM 2002. Proceedings Pub Date : 2002-10-07 DOI: 10.1109/MILCOM.2002.1179649

Z. Shao, U. Madhow

{"title":"A QoS framework for heavy-tailed traffic over the wireless Internet","authors":"Z. Shao, U. Madhow","doi":"10.1109/MILCOM.2002.1179649","DOIUrl":"https://doi.org/10.1109/MILCOM.2002.1179649","url":null,"abstract":"In this paper, we propose a QoS framework for wireless data applications that accounts for the heavy-tailed nature of Internet traffic. Instead of the conventional wisdom of provisioning more conservatively for such traffic, we investigate scheduling strategies that implicitly penalize the long transactions (e.g., long file transfers) that contribute to the heavy tails, while providing good performance to short transactions (e.g., a short Web page download). The proposed framework is illustrated by the simple model of a bottleneck link, at which transactions (e.g., TCP connections) whose lengths follow a heavy-tailed distribution begin according to a Poisson process. The link scheduler we investigate is the foreground-background (FB) scheduler, which serves, in each transmission slot, the transaction that has received the least service thus far. Comparing the conventional round robin (RR) scheduler with the FB scheduler, we find that the FB scheduler requires much fewer network resources to attain a given QoS. After showing the efficacy of the FB scheduler for a single bottleneck link, we consider a wireless link shared by multiple users, where further gains are obtained by using multiuser diversity, exploiting the differences in the qualities of the channel seen by different users. We generalize our notion of QoS for this scenario, in a manner consistent with the notion of proportional fairness (PF), and investigate scheduling using an appropriate combination of PF across users, and FB across transactions for a given user.","PeriodicalId":191931,"journal":{"name":"MILCOM 2002. Proceedings","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115061244","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 16

Turbo product coding in frequency-hop wireless communications with partial-band interference 部分频带干扰下跳频无线通信中的Turbo产品编码

MILCOM 2002. Proceedings Pub Date : 2002-10-07 DOI: 10.1109/MILCOM.2002.1179571

M. Pursley, J. S. Skinner

引用次数: 23

Experimental comparison of hybrid and proactive MANET routing protocols 混合和主动MANET路由协议的实验比较

MILCOM 2002. Proceedings Pub Date : 2002-10-07 DOI: 10.1109/MILCOM.2002.1180495

Peter Sholander, Andreas Yankopolus, Paul Coccoli, Siamak S. Tabrizi

引用次数: 35

Middleware-based approach for preventing distributed deny of service attacks 基于中间件的分布式拒绝服务攻击防范方法

MILCOM 2002. Proceedings Pub Date : 2002-10-07 DOI: 10.1109/MILCOM.2002.1179635

Wei Yu, D. Xuan, Wei Zhao

{"title":"Middleware-based approach for preventing distributed deny of service attacks","authors":"Wei Yu, D. Xuan, Wei Zhao","doi":"10.1109/MILCOM.2002.1179635","DOIUrl":"https://doi.org/10.1109/MILCOM.2002.1179635","url":null,"abstract":"We extend our previous study on VPOE (virtual private operation environment) to provide DDOS (distributed denial of service) prevention in a distributed heterogeneous environment (Wei Yu et al., IEEE Trans. on Systems, Man, and Cybernetics, 2002). We introduce our integrated middleware-based defense system to support this service by studying two important components, middleware box and domain agent. Our technology includes the following: (1) we adopt network-based middlewares which are realized by special devices inserted in various locations of the network and which cooperate to achieve the defense mission objectives; (2) we take generic primitive and role-based approaches; with network primitives, middlewares are programmable entities and can change their roles during the system run-time according to the system defense requirements; (3) we take generic signaling control protocols by which middlewares can cooperate with each other effectively to achieve the high defense performance globally. Middlewares provide transparent services to applications and make our solution both upward and downward compatible. Thus, our technology can easily be deployed with the current infrastructures. By using the generic middleware box control protocols and network primitives, the middleware boxes can cooperatively share the countermeasure information and easily change their roles in run-time to prevent DDOS attacks efficiently. In this sense, our defense system can adaptively deploy the defense strategy according to the dynamic network attack situation. As a result, our technology is effective and can be used in a large system.","PeriodicalId":191931,"journal":{"name":"MILCOM 2002. Proceedings","volume":"109 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124774566","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Performance analysis of a new header compression scheme for TCP streams in IP based wireless networks 基于IP的无线网络中TCP流报头压缩新方案的性能分析

MILCOM 2002. Proceedings Pub Date : 2002-10-07 DOI: 10.1109/MILCOM.2002.1180453

P. Camarda, S. Petrizzelli

引用次数: 5

Adaptive, iterative, reduced-rank equalization for MIMO channels MIMO信道的自适应、迭代、降阶均衡

MILCOM 2002. Proceedings Pub Date : 2002-10-07 DOI: 10.1109/MILCOM.2002.1179617

Yakun Sun, M. Honig, V. Tripathi

引用次数: 9