Computer & Network Security
... knowledge of the user spreads from one computer to another when its host (such as an infected file) is taken to that computer viruses always infect or corrupt files on a targeted computer Worm : a computer program that is a self-replicating code Resides in active memory (the program is execu ...
... knowledge of the user spreads from one computer to another when its host (such as an infected file) is taken to that computer viruses always infect or corrupt files on a targeted computer Worm : a computer program that is a self-replicating code Resides in active memory (the program is execu ...
It`s All About Networking
... contains a path towards a WAN/Internet • Useable IP Range: Any IP in a subnet that except the Network and Broadcast ...
... contains a path towards a WAN/Internet • Useable IP Range: Any IP in a subnet that except the Network and Broadcast ...
Introduction CS 239 Security for Networks and System Software
... VPNs and Firewalls • VPN encryption is typically done between firewall machines – VPN often integrated into firewall product • Do I need the firewall for anything else? • Probably, since I still need to allow non-VPN traffic in and out • Need firewall “inside” VPN – Since VPN traffic encrypted – In ...
... VPNs and Firewalls • VPN encryption is typically done between firewall machines – VPN often integrated into firewall product • Do I need the firewall for anything else? • Probably, since I still need to allow non-VPN traffic in and out • Need firewall “inside” VPN – Since VPN traffic encrypted – In ...
Understanding Network Access Control
... The most secure authentication method is the detection of end systems at the network switch port using 802.1X authentication. This requires particular capabilities on the switch, the client, and the local authentication entity (RADIUS server). 802.1X also allows for the authentication of both the en ...
... The most secure authentication method is the detection of end systems at the network switch port using 802.1X authentication. This requires particular capabilities on the switch, the client, and the local authentication entity (RADIUS server). 802.1X also allows for the authentication of both the en ...
Slide 1
... This wireless framework is “wired infrastructure” independent Each node is both end-user and router It’s appropriate for environment where wired network cannot be used or is not desired ...
... This wireless framework is “wired infrastructure” independent Each node is both end-user and router It’s appropriate for environment where wired network cannot be used or is not desired ...
Zombie Attack Analyser and Counter Measure In Cloud
... countermeasure can be applied attacks usually involve early stage actions such as multistep exploitation, vulnerability scanning, and compromising identified vulnerable virtual machines as zombies, and finally DDoS attacks through the compromised zombies. Within the system, especially the detection ...
... countermeasure can be applied attacks usually involve early stage actions such as multistep exploitation, vulnerability scanning, and compromising identified vulnerable virtual machines as zombies, and finally DDoS attacks through the compromised zombies. Within the system, especially the detection ...
Chapter 17-20
... connection between a computer and a network. A computer with multiple network interconnections (e.g., a router) must be assigned one IP address for each connection. ...
... connection between a computer and a network. A computer with multiple network interconnections (e.g., a router) must be assigned one IP address for each connection. ...
View File - University of Engineering and Technology, Taxila
... – How to make a service ubiquitous, i.e., available while moving around the network and regenerating if necessary ...
... – How to make a service ubiquitous, i.e., available while moving around the network and regenerating if necessary ...
20110201-schmiedt_wang-openflow
... The big picture from a University point of view… • OpenFlow provides a mechanism for the engagement of IT Staff with Academic faculty and students. • On the IT side we’re very busy and have to deal with operational realities. Our eyes are close to the grindstone and it’s often hard to think “out of ...
... The big picture from a University point of view… • OpenFlow provides a mechanism for the engagement of IT Staff with Academic faculty and students. • On the IT side we’re very busy and have to deal with operational realities. Our eyes are close to the grindstone and it’s often hard to think “out of ...
Network Security
... (confidentiality, integrity). Authentication protocols verify the source of data. We may also control which traffic is allowed to enter our system (ingress filtering) or to leave our system (egress filtering). Access control decisions based on information like addresses, port numbers, ... ...
... (confidentiality, integrity). Authentication protocols verify the source of data. We may also control which traffic is allowed to enter our system (ingress filtering) or to leave our system (egress filtering). Access control decisions based on information like addresses, port numbers, ... ...
TCP/IP for Security Administrators
... TTL: max. hops through network (decremented by routers); usually 32 next protocol: TCP, 6 | UDP, 17 | ICMP, 1 | IPsec AH, 51 | IPsec ESP, 50 header checksum: 16-bit one’s compliment of sum ...
... TTL: max. hops through network (decremented by routers); usually 32 next protocol: TCP, 6 | UDP, 17 | ICMP, 1 | IPsec AH, 51 | IPsec ESP, 50 header checksum: 16-bit one’s compliment of sum ...
Simulating mobile and wireless world using NS
... a and whose value is 123 set b $a ;#creates b whose value is a’s value set c [expr $b+10] ;#evaluate the characters between the brackets as a TCL script and use the result as the value of c for {set i 0} {$i < 3} {incr i} {puts $i} ...
... a and whose value is 123 set b $a ;#creates b whose value is a’s value set c [expr $b+10] ;#evaluate the characters between the brackets as a TCL script and use the result as the value of c for {set i 0} {$i < 3} {incr i} {puts $i} ...
IOSR Journal of Computer Engineering (IOSR-JCE)
... Abstract: Mobile ad hoc networks are networks without any infrastructure and topology. They are self organized and battery powered networks with a large number of mobile nodes. Limited battery power is the most important issue considered during the design of a mobile ad hoc network. Frequent recharg ...
... Abstract: Mobile ad hoc networks are networks without any infrastructure and topology. They are self organized and battery powered networks with a large number of mobile nodes. Limited battery power is the most important issue considered during the design of a mobile ad hoc network. Frequent recharg ...
Outsourcing Home Network Security - Events
... setting, the crux of the approach—clustering flow statistics to identify coordinated, bot-like behavior—could apply in a distributed botnet detection and response system that (1) collects traffic data on suspicious (botnet-like) communication and activities from local network switches, (2) identifie ...
... setting, the crux of the approach—clustering flow statistics to identify coordinated, bot-like behavior—could apply in a distributed botnet detection and response system that (1) collects traffic data on suspicious (botnet-like) communication and activities from local network switches, (2) identifie ...
Network+ Guide to Networks, Fourth Edition
... • Network adapters come in a variety of types depending on access method, network transmission speed, connector interfaces, type of compatible motherboard, and manufacturer • Desktops or tower PCs may use an expansion card NIC, which must match the system’s bus • NICs are designed to be used with ei ...
... • Network adapters come in a variety of types depending on access method, network transmission speed, connector interfaces, type of compatible motherboard, and manufacturer • Desktops or tower PCs may use an expansion card NIC, which must match the system’s bus • NICs are designed to be used with ei ...
Computers Are Your Future Twelfth Edition
... • Intranet o Password-protected network controlled by the company often using Internet technology. o Accessed only by employees ...
... • Intranet o Password-protected network controlled by the company often using Internet technology. o Accessed only by employees ...
RT-WiFi: Real-Time High Speed Communication Protocol for
... quality of control, and the performance of the whole system. Many existing wireless technologies have been adopted in wireless control systems. However each of these protocols can only support a small number of specific control applications. Some of them are based on low data rate physical layers, l ...
... quality of control, and the performance of the whole system. Many existing wireless technologies have been adopted in wireless control systems. However each of these protocols can only support a small number of specific control applications. Some of them are based on low data rate physical layers, l ...
User`s Guide - Amped Wireless
... Network Settings: Internet Network (WAN) The Smart Setup Wizard will assist you in setting up your Internet connection. However in the case that you wish to adjust settings manually, the options on this page provide you with the tools to do this easily. Select your Internet Connection type from the ...
... Network Settings: Internet Network (WAN) The Smart Setup Wizard will assist you in setting up your Internet connection. However in the case that you wish to adjust settings manually, the options on this page provide you with the tools to do this easily. Select your Internet Connection type from the ...
行動多媒體通訊標準參考模式(Reference Models)
... The SCP then attempts to identify which access network the target cell is in based upon information provided by the mobile terminal and then ascertains whether the target cell is within its control domain. If the access network is within its control domain, it attempts to set up fixed links to the a ...
... The SCP then attempts to identify which access network the target cell is in based upon information provided by the mobile terminal and then ascertains whether the target cell is within its control domain. If the access network is within its control domain, it attempts to set up fixed links to the a ...
Capacity Scaling with Multiple Radios and Multiple Channels in
... key to one-hop capacity scaling is enhancing spatial reuse, i.e., reducing the re-use distance between co-channel users as much as possible. In narrowband systems such as FDMA, the extent of spatial reuse is directly proportional to the number of orthogonal channels available. Currently, only a very ...
... key to one-hop capacity scaling is enhancing spatial reuse, i.e., reducing the re-use distance between co-channel users as much as possible. In narrowband systems such as FDMA, the extent of spatial reuse is directly proportional to the number of orthogonal channels available. Currently, only a very ...
4th Edition: Chapter 1
... Optical links from central office to the home Two competing optical technologies: Passive Optical network (PON) Active Optical Network (PAN) Much higher Internet rates; fiber also carries ...
... Optical links from central office to the home Two competing optical technologies: Passive Optical network (PON) Active Optical Network (PAN) Much higher Internet rates; fiber also carries ...
a security survey of authenticated routing protocol (aran)
... but this possibility is not considered here anymore. So, modification attacks are prevented. This will prevent the attacks in which routing messages are altered while in transit or routing loops creation. I.) In general only destination address are contained in ARAN packets, plus packets do not cont ...
... but this possibility is not considered here anymore. So, modification attacks are prevented. This will prevent the attacks in which routing messages are altered while in transit or routing loops creation. I.) In general only destination address are contained in ARAN packets, plus packets do not cont ...
IOSR Journal of Computer Engineering (IOSR-JCE)
... Bearing in mind a range of features and restrictions of wireless communication technology, the VANET research works are still simulation based but there are some quite exciting and upcoming projects expected to be available before long in the real world situations. The scope of this work is associat ...
... Bearing in mind a range of features and restrictions of wireless communication technology, the VANET research works are still simulation based but there are some quite exciting and upcoming projects expected to be available before long in the real world situations. The scope of this work is associat ...
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.