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Y-Comm - Middlesex University
... – The mobile node can know or estimate the network state at a given point before it arrives at that point – Proactive Policies allow us to maximize the use of available channels provided you know the amount of time a channel will be available. – That time is known as: • Time before vertical handover ...
... – The mobile node can know or estimate the network state at a given point before it arrives at that point – Proactive Policies allow us to maximize the use of available channels provided you know the amount of time a channel will be available. – That time is known as: • Time before vertical handover ...
Wireless Networking for the Smart Grid
... Tropos mesh software leverages redundant paths, channels, frequencies, and backhaul locations to create the most robust network possible ...
... Tropos mesh software leverages redundant paths, channels, frequencies, and backhaul locations to create the most robust network possible ...
Simplifying Manageability, Scalability and Host Mobility in
... and a large number of host-devices which can either directly connect to veil-switches or through Ethernet based Wired/Wireless LAN switches. The roles of each of these devices are as follows. vcc. It bootstraps the network by performing the initial vid -assignment to veil-switches. In addition, it a ...
... and a large number of host-devices which can either directly connect to veil-switches or through Ethernet based Wired/Wireless LAN switches. The roles of each of these devices are as follows. vcc. It bootstraps the network by performing the initial vid -assignment to veil-switches. In addition, it a ...
A Survey on Intelligent Sensor Network and Its Applications
... More complicated structures, such as multiple base stations, are also possible depending on the scale of the application. Although there are various kinds of WSN applications, they face to some common problems. Due to the distributed and ad hoc nature, the common WSN problems are described in the fo ...
... More complicated structures, such as multiple base stations, are also possible depending on the scale of the application. Although there are various kinds of WSN applications, they face to some common problems. Due to the distributed and ad hoc nature, the common WSN problems are described in the fo ...
An Extended AODV Protocol for VoIP HuiYao Zhang Marek E. Bialkowski
... has been reported with respect to the MANET environment. Due to a large overhead caused by transmitting small packets, VoIP applications make a very inefficient use of the wireless resources. In order to make their better utilization, an optimal routing in a MANET is required. This paper reports on ...
... has been reported with respect to the MANET environment. Due to a large overhead caused by transmitting small packets, VoIP applications make a very inefficient use of the wireless resources. In order to make their better utilization, an optimal routing in a MANET is required. This paper reports on ...
Slide 1
... • These addresses are for private, internal network use only • Packets containing these addresses are not routed over the Internet • A router should never route RFC 1918 addresses, because ISPs typically configure the border routers to prevent privately addressed traffic from being forwarded ...
... • These addresses are for private, internal network use only • Packets containing these addresses are not routed over the Internet • A router should never route RFC 1918 addresses, because ISPs typically configure the border routers to prevent privately addressed traffic from being forwarded ...
Mobile Networks - ISSA-Sacramento
... • D-AMPS is far more complex than AMPS and supports two modes of operations • Voice traffic is digital • AMPS used for channel setup and signaling • IS-54 – Uses Time-Division Multiple Access (TDMA) to divide the radio channels used by AMPS • IS-136 (D-AMPS 1900) supports dual-mode, dual-band: – Dua ...
... • D-AMPS is far more complex than AMPS and supports two modes of operations • Voice traffic is digital • AMPS used for channel setup and signaling • IS-54 – Uses Time-Division Multiple Access (TDMA) to divide the radio channels used by AMPS • IS-136 (D-AMPS 1900) supports dual-mode, dual-band: – Dua ...
Technology in Action - Mesa Community College
... Failure of one computer can bring down the entire network. Problems in data transmission can sometimes be difficult to find. ...
... Failure of one computer can bring down the entire network. Problems in data transmission can sometimes be difficult to find. ...
Autonomic Wireless Sensor Networks: Intelligent Ubiquitous
... • Find or update route between specific source and destination • Started if no active route present in routing table • Broadcast routing request (RREQ) packets • Generates routing table entries for hops to source • Endpoint router responds with Routing response (RREP) packet • Routes generated for h ...
... • Find or update route between specific source and destination • Started if no active route present in routing table • Broadcast routing request (RREQ) packets • Generates routing table entries for hops to source • Endpoint router responds with Routing response (RREP) packet • Routes generated for h ...
Security+ Guide to Network Security Fundamentals, Third Edition
... type of computer, operating system, software, and network connection a computer uses – An attacker who knows that information can more easily determine the weaknesses of the system to attack it ...
... type of computer, operating system, software, and network connection a computer uses – An attacker who knows that information can more easily determine the weaknesses of the system to attack it ...
Traffic Measurement and Analysis of Wide Area
... was also applied to all other UiTM branch campuses. All access to the Internet from branch campuses will be merged in the router of UiTM Shah Alam before going out through UiTM Shah Alam WAN link to the respective end computers on the Internet. As a result, the performance of Internet access in UiT ...
... was also applied to all other UiTM branch campuses. All access to the Internet from branch campuses will be merged in the router of UiTM Shah Alam before going out through UiTM Shah Alam WAN link to the respective end computers on the Internet. As a result, the performance of Internet access in UiT ...
PPT_ch01 - Mercer University Computer Science Department
... type of computer, operating system, software, and network connection a computer uses – An attacker who knows that information can more easily determine the weaknesses of the system to attack it ...
... type of computer, operating system, software, and network connection a computer uses – An attacker who knows that information can more easily determine the weaknesses of the system to attack it ...
User Manual
... ELPRO products are designed to be used in industrial environments by experienced industrial engineering personnel with adequate knowledge of safety design considerations. ELPRO radio products are used on unprotected license-free radio bands with radio noise and interference. The products are designe ...
... ELPRO products are designed to be used in industrial environments by experienced industrial engineering personnel with adequate knowledge of safety design considerations. ELPRO radio products are used on unprotected license-free radio bands with radio noise and interference. The products are designe ...
LDAP- Lightweight Directory Access Protocol
... implemented over the internet due to its lightweight ...
... implemented over the internet due to its lightweight ...
Snffing_Spoofing_Session Hjacking_Netcat
... o windump --- port of tcpdump o Snort --- sniffer/IDS o Wireshark (formerly, Ethereal) --- able to decode lots of protocols o Sniffit --- popular with attackers o Dsniff --- perhaps most powerful ...
... o windump --- port of tcpdump o Snort --- sniffer/IDS o Wireshark (formerly, Ethereal) --- able to decode lots of protocols o Sniffit --- popular with attackers o Dsniff --- perhaps most powerful ...
Security Implications of IPv6
... During the creation life-cycle of new standards and protocols: •Security is often an after-thought •Unexpected problems happen due to complex interactions •Many issues don’t surface until the tech receives wider usage ...
... During the creation life-cycle of new standards and protocols: •Security is often an after-thought •Unexpected problems happen due to complex interactions •Many issues don’t surface until the tech receives wider usage ...
Microsoft`s Active Directory Services
... Infrastructure data Static/start-up configuration for devices (e.g., routers, switches) Server information (e.g., name server) Policies Conditions, actions, policy rules ...
... Infrastructure data Static/start-up configuration for devices (e.g., routers, switches) Server information (e.g., name server) Policies Conditions, actions, policy rules ...
WINE (IST-1999
... of checking the association between the addresses and signatures of other nodes This association (binding) is typically achieved by using public key certificates issued by a certification authority (CA) This can work if ad hoc nodes could have permanent addresses One secure and potentially expensive ...
... of checking the association between the addresses and signatures of other nodes This association (binding) is typically achieved by using public key certificates issued by a certification authority (CA) This can work if ad hoc nodes could have permanent addresses One secure and potentially expensive ...
- Snistnote
... Transmission Control Protocol (TCP) included concepts such as encapsulation, the datagram, and the functions of a gateway. ...
... Transmission Control Protocol (TCP) included concepts such as encapsulation, the datagram, and the functions of a gateway. ...
Building a trustworthy, secure, and private
... • Online consumers worry about revealing personal data • This fear held back $15 billion in online revenue in 2001 ...
... • Online consumers worry about revealing personal data • This fear held back $15 billion in online revenue in 2001 ...
Solving remote access problems
... • Receive connect from PFL and verify access to resource is allowed • Connect to application server using selected protocol • Act as network layer gateway • Send data back to PFL over SSL ...
... • Receive connect from PFL and verify access to resource is allowed • Connect to application server using selected protocol • Act as network layer gateway • Send data back to PFL over SSL ...
4th Edition: Chapter 1
... institutional link to ISP (Internet) institutional router Ethernet switch ...
... institutional link to ISP (Internet) institutional router Ethernet switch ...
Kerio WinRoute Firewall 6
... To set mapping, DNS name of the domain is required — company.com in our example, along with login data of any user belonging to this domain. For automatic authentication with NTLM (web browsers, Kerio Outlook Connector, etc.), name of the corresponding Windows NT domain is also required (i.e. COMPAN ...
... To set mapping, DNS name of the domain is required — company.com in our example, along with login data of any user belonging to this domain. For automatic authentication with NTLM (web browsers, Kerio Outlook Connector, etc.), name of the corresponding Windows NT domain is also required (i.e. COMPAN ...
4th Edition: Chapter 1
... institutional link to ISP (Internet) institutional router Ethernet switch ...
... institutional link to ISP (Internet) institutional router Ethernet switch ...
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.