Sensor Network Security: More Interesting Than You Think ∗ pot

... Sensor Network Security: More Interesting Than You Think ∗ Madhukar Anand, Eric Cronin, Micah Sherr, Matt Blaze, Zachary Ives, ... maturing wireless sensor network tech-nology, it is envisaged that the network of RTU and PLCswill be replaced by devices such as the wireless sensor motes [SCA]. Sensor networks could be deployed ... literature on sensor network security has largelyapplied the Internet security model to sensor networks.Prior work tends to concentrate exclusively on the low-power aspect of sensor networks,...

... surrounding wireless sensor networks before discussing more specific sensor network defenses.6.1.1 BackgroundKey management issues in wireless networks are not unique to wireless sensor networks. Indeed, ... been exchanged.In this case, Alice computes KA ∗ TB= KA ∗ KB ∗ G while Bob computesKB ∗ TA= KB ∗ KA ∗ G. Because KA ∗ TB= KB ∗ TA, Alice and Bob nowshare a secret key.As stated ... wireless sensor network designs. Because encryption andkey management/establishment are so crucial to the defense of a wireless sensor network, with nearly all aspects of wireless sensor network...

... Besides providing an intuitive and a more transparent explanation of our results, this approach is computationally more interesting and allows us to formulate an interesting question: How large ... PHRASE STRUCTURE TREES BEAR MORE FRUIT THAN YOU WOULD HAVE THOUGHT* Aravind K. Joshi and Leon "S." Levy Department of Computer ... discuss the notion of categories with holes as recently intro- duced by Gazdam [3]. There is an interesting history behind this notion. Sage~'s parser explieitly exploits such a convention...

... schemeImproved 802.11i31Some other case studiesWireless networking 802.11i – wireless access point auth 802.16e – metropolitan area networking Simple config – access point configurationSSL ... formatReuse supplicant nonce Reuse SNonce, derive correct PTK from Message 3 Performance degradation, more computation in supplicantCombined solution Supplicant reuses SNonce Store one entry of ... (HostAP)Session HijackingMan-in-the-MiddleDenial-of-Service: cost related evaluationChanghua He Network Security Protocols:Analysis methods and standardsJohn MitchellStanford UniversityJoint...

... deployment environments of wireless sensor networks make security for these systems more challenging than for conventional networks. However, several properties of sensor networks may help address the ... challenges in wireless sensor networks. We identify the security threats, review proposed security mechanisms for wireless sensor networks. Keywords: Wireless Sensor Networks (WSNs), Security, ... confuse the sensor s network protocols. Wormhole attack is a significant threat to wireless sensor networks, because this type of attack does not require compromising a sensor in the network...

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... (m mod n)e mod ndMagichappens!c 8: Network Security8-2Chapter 8: Network SecurityChapter goals: ❒understand principles of network security: ❍cryptography and its many uses ... following: If you use these slides (e.g., in a class) in substantially unaltered form, that you mention their source (after all, we’d like people to use our book!) If you post any slides ... 8: Network Security8-1Chapter 8 Network SecurityA note on the use of these ppt slides:We’re making these slides...

... Topic 3GWindown 2003 network securityTrong chủ đề này, bạn sẽ xem xét các tác động của biến bật / tắt các giao thức NetBIOS trên một máy Windown 2003.NetBIOS là viết tắt của Network Basic Input ... Documents, và click OK.18. Nhấp đôi chuột vào My Network Places.19. Nhấp đôi chuột vào Computers Near Me.20. Nhấp đôi chuột vào printer server of yout partner’s computer.21. Nhấp đối chuột vào ... có thể chỉ cần ngửi tất cả các gói tin ra mạng và biên dịch lại cho họ tại giải trí của mình. Network Address Translation (NAT) là một tiêu chuẩn Internet được xác định trong RFC 1631.NAT được...

... IDS HARDWARE APPLIANCESCan handle more network trafficHave better scalability than software IDSsPlug­and­play capabilitiesOne of its major advantagesDo not need to be configured to work with a particular OSExamplesiForceIntrusion SecureNetStealthWatch G1131SUMMARYIntrusion Detection System (IDS)Supplementary line of defense behind firewalls and antivirus softwareIDS components Network sensorsAlert messagesCommand consoleResponse systemDatabase of signatures132SUMMARYIDS stepsInstall set of attack signaturesSensors monitor packetsIDS respondsFalse positives are highly likelyRequire administrators to fine­tune the systemIf attack is legitimate, escalation procedures should be followedIDS logs alarmed eventsThey can be reviewed later133SUMMARYIDS implementation Network based IDS (NIDS)Host­based IDS (HIDS)Hybrid IDSDistributed IDS (DIDS)Types of IDS productsOpen­source IDSs such as SnortCommercial firewalls IDS hardware appliances134CƠ BẢN VỀ AN NINH MẠNG CƠ BẢN VỀ AN NINH MẠNG Giá trị thông tin­ Chu kỳ sống, mức độ đánh giáQuy tắc CIA­ Confedentiality (Tính bảo mật)­ Availability (Tính sẵn sàng)­ Integrity (Tính nguyên vẹn)*******************************­ Non Repudiation (không thể từ chối)14 Network ... IDS HARDWARE APPLIANCESCan handle more network trafficHave better scalability than software IDSsPlug­and­play capabilitiesOne of its major advantagesDo not need to be configured to work with a particular OSExamplesiForceIntrusion SecureNetStealthWatch G1131SUMMARYIntrusion Detection System (IDS)Supplementary line of defense behind firewalls and antivirus softwareIDS components Network sensorsAlert messagesCommand consoleResponse systemDatabase of signatures132SUMMARYIDS stepsInstall set of attack signaturesSensors monitor packetsIDS respondsFalse positives are highly likelyRequire administrators to fine­tune the systemIf attack is legitimate, escalation procedures should be followedIDS logs alarmed eventsThey can be reviewed later133SUMMARYIDS implementation Network based IDS (NIDS)Host­based IDS (HIDS)Hybrid IDSDistributed IDS (DIDS)Types of IDS productsOpen­source IDSs such as SnortCommercial firewalls IDS hardware appliances134CƠ BẢN VỀ AN NINH MẠNG CƠ BẢN VỀ AN NINH MẠNG Giá trị thông tin­ Chu kỳ sống, mức độ đánh giáQuy tắc CIA­ Confedentiality (Tính bảo mật)­ Availability (Tính sẵn sàng)­ Integrity (Tính nguyên vẹn)*******************************­ Non Repudiation (không thể từ chối)14 Network ... backupPhysicalPhysicalPerimeterPerimeterInternalInternalHostHostApplicationApplicationDataDataOPTIONS FOR IMPLEMENTING INTRUSION DETECTION SYSTEMS Network based IDSHost­base IDSHybrid implementations112 NETWORK SECURITY NETWORK SECURITYMCSE+SecuritySCNP, ZHHP Network...