Introduction to the MEF
... To reduce operating and capital expenditures, many enterprises are considering consolidating their voice, data, and video traffic onto a single converged, packetbased network Despite the availability of Ethernet metro and WAN services, many enterprises are still searching for solutions that fully ad ...
... To reduce operating and capital expenditures, many enterprises are considering consolidating their voice, data, and video traffic onto a single converged, packetbased network Despite the availability of Ethernet metro and WAN services, many enterprises are still searching for solutions that fully ad ...
R33092099
... and it provides several benefits to users such as, no cabling cost, automatic connection to all nodes, network flexibility, ease of installation and it also discovers new routes automatically. These wireless mesh networks are not stand alone it is compatible and interoperable with other wireless net ...
... and it provides several benefits to users such as, no cabling cost, automatic connection to all nodes, network flexibility, ease of installation and it also discovers new routes automatically. These wireless mesh networks are not stand alone it is compatible and interoperable with other wireless net ...
Estimating Packet Error Rate caused by Interference
... Coexistence Assurance (CA) document when developing a draft wireless standard for unlicensed operation [2]. ...
... Coexistence Assurance (CA) document when developing a draft wireless standard for unlicensed operation [2]. ...
InternetOverview
... Hand mappings out for organization’s servers (Web & mail). Store parts of the database Responds to all queries for name it is the authority Can be maintained by organization or service provider ...
... Hand mappings out for organization’s servers (Web & mail). Store parts of the database Responds to all queries for name it is the authority Can be maintained by organization or service provider ...
Basic Switch Concept
... ports with incoming traffic because it cannot find the port number for a particular MAC address in the MAC address table. The switch, in essence, acts like a hub. – Some network attack tools can generate 155,000 MAC entries on a switch per minute. – Over a short period of time, the MAC address table ...
... ports with incoming traffic because it cannot find the port number for a particular MAC address in the MAC address table. The switch, in essence, acts like a hub. – Some network attack tools can generate 155,000 MAC entries on a switch per minute. – Over a short period of time, the MAC address table ...
SAMSUNG Multifunction Printer Security
... To address this situation we need to understand the path information travels and then we can identify the vulnerabilities the information can encounter. A simple path is one that uses a single connection such as the path from a computer to a printer: ...
... To address this situation we need to understand the path information travels and then we can identify the vulnerabilities the information can encounter. A simple path is one that uses a single connection such as the path from a computer to a printer: ...
www.siskiyous.edu
... Assigning IP Addresses (cont’d.) • Static IP address – Assignment manually – Modify client workstation TCP/IP properties • Only way to change ...
... Assigning IP Addresses (cont’d.) • Static IP address – Assignment manually – Modify client workstation TCP/IP properties • Only way to change ...
3 Assumption on the firewall architecture
... A packet filter is a router designed for filtering packets as they pass between the router's interfaces. A packet filtering router usually can filter IP packets based on the destination and/or source IP addresses and port numbers. This router looks in its configuration files to see if the datagrams ...
... A packet filter is a router designed for filtering packets as they pass between the router's interfaces. A packet filtering router usually can filter IP packets based on the destination and/or source IP addresses and port numbers. This router looks in its configuration files to see if the datagrams ...
Three Challenges in Reliable Data Transport over
... • Split connections [YB94,BB95] Wireless connection need not be TCP • Hard state at base station Complicates mobility Vulnerable to failures • Violates end-to-end semantics ...
... • Split connections [YB94,BB95] Wireless connection need not be TCP • Hard state at base station Complicates mobility Vulnerable to failures • Violates end-to-end semantics ...
Course Computer Communications Study Period 2, 2012
... network of cables, attaches homes to ISP router • homes share access network to cable headend • unlike DSL, which has dedicated access to central office ...
... network of cables, attaches homes to ISP router • homes share access network to cable headend • unlike DSL, which has dedicated access to central office ...
Cloud Computing and Security
... large-scale network to operate at high bandwidth and with a level of redundancy and resilience appropriate to wide-areas where the risk of physical transmission link compromise is significant. Interoute makes use of the necessary minimal subset of these features in order to provide an assured level ...
... large-scale network to operate at high bandwidth and with a level of redundancy and resilience appropriate to wide-areas where the risk of physical transmission link compromise is significant. Interoute makes use of the necessary minimal subset of these features in order to provide an assured level ...
docx 152851_networking
... This serves to differentiate between services done on the access layer and the function of the backbone layer. It also provides services such as access-list filtering for the core layer. The access layer provides connection of local users to the network. It provides services such as bandwidth switch ...
... This serves to differentiate between services done on the access layer and the function of the backbone layer. It also provides services such as access-list filtering for the core layer. The access layer provides connection of local users to the network. It provides services such as bandwidth switch ...
MPV2
... “For 3 ½ years, a shadowy group of computer hackers has broken into hundreds of computer networks and stolen thousands of top-secret files on Pentagon war-planning systems and NASA technical research. Dubbed the "Moonlight Maze" group, the hackers continue to elude the FBI, the CIA and the National ...
... “For 3 ½ years, a shadowy group of computer hackers has broken into hundreds of computer networks and stolen thousands of top-secret files on Pentagon war-planning systems and NASA technical research. Dubbed the "Moonlight Maze" group, the hackers continue to elude the FBI, the CIA and the National ...
p1568938335-dutta - Computer Science, Columbia University
... association between a mobile and a VPN gateway, but it does not offer flexible tunnel management techniques and has not explored mechanisms to provide smooth handoff. Birdstep (www.birdstep.com) proposes an approach that uses two instances of MIP to support seamless and secure mobility between an en ...
... association between a mobile and a VPN gateway, but it does not offer flexible tunnel management techniques and has not explored mechanisms to provide smooth handoff. Birdstep (www.birdstep.com) proposes an approach that uses two instances of MIP to support seamless and secure mobility between an en ...
2 Need for coexistence - IEEE 802 LAN/MAN Standards Committee
... video distribution in the TVWS [9]. It is likely that other wireless technologies will be deployed in the TVWS. Good coexistence between these different wireless network technologies means that the networks do not cause unacceptable interference to one another. Since the devices in these networks ar ...
... video distribution in the TVWS [9]. It is likely that other wireless technologies will be deployed in the TVWS. Good coexistence between these different wireless network technologies means that the networks do not cause unacceptable interference to one another. Since the devices in these networks ar ...
Cache Increases the Capacity of Wireless Networks
... of nodes and W is the channel throughput. That is, the network capacity decreases as the number of nodes increases. Later, Grossglauser and Tse [11] show that the per-user throughput can increase dramatically when nodes are mobile rather than static. It is possible for network capacity to remain con ...
... of nodes and W is the channel throughput. That is, the network capacity decreases as the number of nodes increases. Later, Grossglauser and Tse [11] show that the per-user throughput can increase dramatically when nodes are mobile rather than static. It is possible for network capacity to remain con ...
SMART WIRELESS GATEWAY HART MANUAL
... This section describes how to connect to the Gateway for the first time and what settings should be configured before placing it on a live control network. It is important to note that some Gateways are used in stand-alone applications and do not reside on a network. In these cases it is still impor ...
... This section describes how to connect to the Gateway for the first time and what settings should be configured before placing it on a live control network. It is important to note that some Gateways are used in stand-alone applications and do not reside on a network. In these cases it is still impor ...
Chapter 5
... seldom used on low bit error link (fiber, some twisted pair) wireless links: high error rates • Q: why both link-level and end-end reliability? 5: DataLink Layer ...
... seldom used on low bit error link (fiber, some twisted pair) wireless links: high error rates • Q: why both link-level and end-end reliability? 5: DataLink Layer ...
RADIUS Implementation and Deployment Best Practices
... (OTP), MD5-Challenge, Transport Level Security (TLS) for smart card and certificate support, as well as any future authentication technologies. EAP is a critical technology component for secure connections. In addition to support within PPP, EAP is also supported within the IEEE 802 link layer. IEEE ...
... (OTP), MD5-Challenge, Transport Level Security (TLS) for smart card and certificate support, as well as any future authentication technologies. EAP is a critical technology component for secure connections. In addition to support within PPP, EAP is also supported within the IEEE 802 link layer. IEEE ...
PDF
... The wide range of security features on the IE 2000U protects mission-critical traffic, prevents unauthorized access, and maintains uninterrupted operation. The IE 2000U protects operational and nonoperational data by focusing on securing connectivity, defending against network threats, and providing ...
... The wide range of security features on the IE 2000U protects mission-critical traffic, prevents unauthorized access, and maintains uninterrupted operation. The IE 2000U protects operational and nonoperational data by focusing on securing connectivity, defending against network threats, and providing ...
Competitive and Fair Medium Access despite Reactive
... Now we present our A NTI JAM protocol: II. T HE A NTI JAM MAC P ROTOCOL The basic ideas of the A NTI JAM MAC protocol are inspired by slotted ALOHA schemes where nodes change their access probabilities over time, in particular the protocols described in [13] (which also uses access probabilities dep ...
... Now we present our A NTI JAM protocol: II. T HE A NTI JAM MAC P ROTOCOL The basic ideas of the A NTI JAM MAC protocol are inspired by slotted ALOHA schemes where nodes change their access probabilities over time, in particular the protocols described in [13] (which also uses access probabilities dep ...
Wireless security
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.