![Lecture 9](http://sb.studyres.com/store/data/008752147_1-cbfdd0cd1a2437e914d814f99204e7bf-300x300.png)
Lecture 9
... • Receiving machine gets reliable local information about what interface got it • That interface is usually connected to one link • Nearly impossible to fake • Though wireless “links” are not very exclusive Advanced Network Security ...
... • Receiving machine gets reliable local information about what interface got it • That interface is usually connected to one link • Nearly impossible to fake • Though wireless “links” are not very exclusive Advanced Network Security ...
802 21-IEEE-Security_Tutorial
... • Handover techniques that assume concurrent radio usage cannot be used • Even for dual-radio devices it might make sense to reduce the security-related signaling, as it decreases the time that both radios need to be active and thus can increase battery life • In addition, handovers between networks ...
... • Handover techniques that assume concurrent radio usage cannot be used • Even for dual-radio devices it might make sense to reduce the security-related signaling, as it decreases the time that both radios need to be active and thus can increase battery life • In addition, handovers between networks ...
Lecture 1
... • Are there fundamental characteristics of WLAN traces that do not change with technology (e.g., they apply to future ad hoc networks)? – Study human mobility/behavior for non-wireless traces or nonnetwork traces and compare the characteristics – Suggest another way to investigate such question ...
... • Are there fundamental characteristics of WLAN traces that do not change with technology (e.g., they apply to future ad hoc networks)? – Study human mobility/behavior for non-wireless traces or nonnetwork traces and compare the characteristics – Suggest another way to investigate such question ...
Theodoros Salonidis - Rice ECE
... Michele Garetto, Theodoros Salonidis, and Edward Knightly, "Modeling Per-flow Throughput and Capturing Starvation in CSMA Multi-hop Wireless Networks," Proceedings of IEEE INFOCOM 2006, Barcelona, Spain. Theodoros Salonidis and Leandros Tassiulas, “Distributed Dynamic Scheduling For End-to-end Rate ...
... Michele Garetto, Theodoros Salonidis, and Edward Knightly, "Modeling Per-flow Throughput and Capturing Starvation in CSMA Multi-hop Wireless Networks," Proceedings of IEEE INFOCOM 2006, Barcelona, Spain. Theodoros Salonidis and Leandros Tassiulas, “Distributed Dynamic Scheduling For End-to-end Rate ...
Equipment: IP Networking Tech Gear
... • Subnet Mask Address – Divides IP address (192.168.1.50) into 2 numbers, eg. Network ID (192.168.1) and Host ID (50) – Tells devices which numbers to care about – Same for every device on a network – Always starts with 255 – Looks like 255.255.255.0 or 255.255.248.0 ...
... • Subnet Mask Address – Divides IP address (192.168.1.50) into 2 numbers, eg. Network ID (192.168.1) and Host ID (50) – Tells devices which numbers to care about – Same for every device on a network – Always starts with 255 – Looks like 255.255.255.0 or 255.255.248.0 ...
Mobile VPN for CDMA 3G Data Networking
... CDMA 2000 allows the wireless service provider to offer bidirectional packet data transfer using the Internet Protocol. In a CDMA system, resources are used more efficiently because packet traffic channels are shared between many simultaneous users. Most importantly, the service provider will be cap ...
... CDMA 2000 allows the wireless service provider to offer bidirectional packet data transfer using the Internet Protocol. In a CDMA system, resources are used more efficiently because packet traffic channels are shared between many simultaneous users. Most importantly, the service provider will be cap ...
i2 dcn dragon
... • Great at custom demos that show off incredible bandwidth, high quality video, seemless authentication, … • Not so great at making this all available to normal end users at their desks • Users often need to become network experts to make all of this work ...
... • Great at custom demos that show off incredible bandwidth, high quality video, seemless authentication, … • Not so great at making this all available to normal end users at their desks • Users often need to become network experts to make all of this work ...
Business Essentials, 7th Edition Ebert/Griffin
... – Creating new manufacturing capabilities that offer ...
... – Creating new manufacturing capabilities that offer ...
Layered Network
... network (called clients) Client/server network: uses a server to enable clients to share data, data storage space, and devices To function as a server, a computer must be running a network operating system (NOS) ...
... network (called clients) Client/server network: uses a server to enable clients to share data, data storage space, and devices To function as a server, a computer must be running a network operating system (NOS) ...
Ecommerce: Security and Control
... Finding an open port tells you what services are available! Close down as many as necessary to make the system secure. ...
... Finding an open port tells you what services are available! Close down as many as necessary to make the system secure. ...
Resume - OPResume.com
... Provided troubleshooting via telephone and in-person to 1550 internal and external customers, including the installation and configuration of software, password resets and first-line diagnosis/troubleshooting for computer hardware and software problems. Implemented an organization’s computer informa ...
... Provided troubleshooting via telephone and in-person to 1550 internal and external customers, including the installation and configuration of software, password resets and first-line diagnosis/troubleshooting for computer hardware and software problems. Implemented an organization’s computer informa ...
Firewalls
... Only authorized traffic (defined by the local security policy) will be allowed to pass The firewall itself should be immune to penetration (use of trusted system with a secure operating system) ...
... Only authorized traffic (defined by the local security policy) will be allowed to pass The firewall itself should be immune to penetration (use of trusted system with a secure operating system) ...
An Heterogeneous wireless networks testbed for Smart Environment scenarios
... clusters of devices with different topologies (star, tree and peer-to-peer). A Zigbee network is composed of devices with different roles: • Full Function Device (FFD): devices with greater computation and memory capabilities that can perform packet routing. Every network must feature at least be on ...
... clusters of devices with different topologies (star, tree and peer-to-peer). A Zigbee network is composed of devices with different roles: • Full Function Device (FFD): devices with greater computation and memory capabilities that can perform packet routing. Every network must feature at least be on ...
Document
... • Synchronization – Ability of a node to synchronize with another node by listening for beacons or polling for data. ...
... • Synchronization – Ability of a node to synchronize with another node by listening for beacons or polling for data. ...
William Stallings, Cryptography and Network Security 5/e
... Data Confidentiality –protection of data from unauthorized disclosure Data Integrity - assurance that data received is as sent by an authorized entity Non-Repudiation - protection against denial by one of the parties in a communication Availability – resource accessible/usable ...
... Data Confidentiality –protection of data from unauthorized disclosure Data Integrity - assurance that data received is as sent by an authorized entity Non-Repudiation - protection against denial by one of the parties in a communication Availability – resource accessible/usable ...
File - SSUET COMPUTER SCIENCE
... Internet access in cities and towns nationwide. For dial-up access, some national ISPs provide both local and toll-free telephone numbers. online service provider (OSP) also has many members-only features such as instant messaging or their own customized version of a Web browser. The two more popu ...
... Internet access in cities and towns nationwide. For dial-up access, some national ISPs provide both local and toll-free telephone numbers. online service provider (OSP) also has many members-only features such as instant messaging or their own customized version of a Web browser. The two more popu ...
Lecture Slides - Stony Brook University
... But, deauthing sometimes is also used as a protection mechanism Prevent rogue access points ...
... But, deauthing sometimes is also used as a protection mechanism Prevent rogue access points ...
Presentation Title Here
... The 6LoWPAN network protocol is not directly tied to the PHY layer, and alternate PHY layers (even not radio) can be used as long as the end nodes are accessible over the network / Internet. ...
... The 6LoWPAN network protocol is not directly tied to the PHY layer, and alternate PHY layers (even not radio) can be used as long as the end nodes are accessible over the network / Internet. ...
PPT Version
... Solution: Header compression/decompression close to access link with the help of an intermediary could be used [RFC 1144, RFC 2507, RFC 3095, SRTP] An end-to-end IPsec tunnel between the two endpoints would prevent header compression at an intermediate node ...
... Solution: Header compression/decompression close to access link with the help of an intermediary could be used [RFC 1144, RFC 2507, RFC 3095, SRTP] An end-to-end IPsec tunnel between the two endpoints would prevent header compression at an intermediate node ...
Lecture 2 - Networking Devices
... to make data forwarding decisions. Routers use a different addressing scheme that occurs at layer ...
... to make data forwarding decisions. Routers use a different addressing scheme that occurs at layer ...
Lecture 2 - Networking Devices
... to make data forwarding decisions. Routers use a different addressing scheme that occurs at layer ...
... to make data forwarding decisions. Routers use a different addressing scheme that occurs at layer ...
Destination
... • Reality: Many systems don’t use adaptive power control. This is active research, and fun stuff. ...
... • Reality: Many systems don’t use adaptive power control. This is active research, and fun stuff. ...
開放式多媒體 網路應用服務
... Location Management The procedure of updating and finding the current network attachment (e.g., base station (BS), subnet) of a mobile node (MN) Enable an MN to be reached at any time ...
... Location Management The procedure of updating and finding the current network attachment (e.g., base station (BS), subnet) of a mobile node (MN) Enable an MN to be reached at any time ...
Framework Document Presentation
... Other networks, and upper layer functional entities (FEs) • Session admission, authentication and enforcement of policy are executed via the “Session and Policy” control functions • Value-added and enhanced services are hosted in servers in the “Applications and Service Capability” functions • Servi ...
... Other networks, and upper layer functional entities (FEs) • Session admission, authentication and enforcement of policy are executed via the “Session and Policy” control functions • Value-added and enhanced services are hosted in servers in the “Applications and Service Capability” functions • Servi ...
drive - the usual name given to the floppy disk drive on a personal
... element in any hosting solution is a fast connection to the Internet. Hostile applet - an applet that can be embedded in any HTML file such as a web page, and which is designed to be malicious or cause damage when it is downloaded onto your IT system. Hotspot - any location where Wi-Fi network acces ...
... element in any hosting solution is a fast connection to the Internet. Hostile applet - an applet that can be embedded in any HTML file such as a web page, and which is designed to be malicious or cause damage when it is downloaded onto your IT system. Hotspot - any location where Wi-Fi network acces ...
Wireless security
![](https://commons.wikimedia.org/wiki/Special:FilePath/ADSL_router_with_Wi-Fi_(802.11_b-g).jpg?width=300)
Wireless security is the prevention of unauthorized access or damage to computers using wireless networks. The most common types of wireless security are Wired Equivalent Privacy (WEP) and Wi-Fi Protected Access (WPA). WEP is a notoriously weak security standard. The password it uses can often be cracked in a few minutes with a basic laptop computer and widely available software tools. WEP is an old IEEE 802.11 standard from 1999, which was outdated in 2003 by WPA, or Wi-Fi Protected Access. WPA was a quick alternative to improve security over WEP. The current standard is WPA2; some hardware cannot support WPA2 without firmware upgrade or replacement. WPA2 uses an encryption device that encrypts the network with a 256-bit key; the longer key length improves security over WEP.Many laptop computers have wireless cards pre-installed. The ability to enter a network while mobile has great benefits. However, wireless networking is prone to some security issues. Hackers have found wireless networks relatively easy to break into, and even use wireless technology to hack into wired networks. As a result, it is very important that enterprises define effective wireless security policies that guard against unauthorized access to important resources. Wireless Intrusion Prevention Systems (WIPS) or Wireless Intrusion Detection Systems (WIDS) are commonly used to enforce wireless security policies.The risks to users of wireless technology have increased as the service has become more popular. There were relatively few dangers when wireless technology was first introduced. Hackers had not yet had time to latch on to the new technology, and wireless networks were not commonly found in the work place. However, there are many security risks associated with the current wireless protocols and encryption methods, and in the carelessness and ignorance that exists at the user and corporate IT level. Hacking methods have become much more sophisticated and innovative with wireless access. Hacking has also become much easier and more accessible with easy-to-use Windows- or Linux-based tools being made available on the web at no charge.Some organizations that have no wireless access points installed do not feel that they need to address wireless security concerns. In-Stat MDR and META Group have estimated that 95% of all corporate laptop computers that were planned to be purchased in 2005 were equipped with wireless cards. Issues can arise in a supposedly non-wireless organization when a wireless laptop is plugged into the corporate network. A hacker could sit out in the parking lot and gather information from it through laptops and/or other devices, or even break in through this wireless card–equipped laptop and gain access to the wired network.