What is Security?
... – Confidentiality – prevention of unauthorized disclosure of information – Integrity – prevention of unauthorized modification of information – Nonrepudiation – to require that neither the sender nor the receiver of a message can deny the transmission. Kizza - Guide to Computer Network Security ...
... – Confidentiality – prevention of unauthorized disclosure of information – Integrity – prevention of unauthorized modification of information – Nonrepudiation – to require that neither the sender nor the receiver of a message can deny the transmission. Kizza - Guide to Computer Network Security ...
Interworked WiMAX-3G Cellular Data Networks: An Architecture for
... download and upload user profiles — it has no local storage of the user. All necessary information is loaded from the HSS. Interrogating-CSCF (I-CSCF) is another SIP function located at the edge of an administrative domain. Its IP address is published in the Domain Name System (DNS) of the domain , ...
... download and upload user profiles — it has no local storage of the user. All necessary information is loaded from the HSS. Interrogating-CSCF (I-CSCF) is another SIP function located at the edge of an administrative domain. Its IP address is published in the Domain Name System (DNS) of the domain , ...
Mobile Ad hoc Network Security
... such as via an Access Point (AP) • Example: email • Bandwidth is higher at shorter range • Less power is required to transmit over shorter distances • Since multiple paths exist to the network over multiple nodes, there is no bottleneck of an AP ...
... such as via an Access Point (AP) • Example: email • Bandwidth is higher at shorter range • Less power is required to transmit over shorter distances • Since multiple paths exist to the network over multiple nodes, there is no bottleneck of an AP ...
Lecture 1.1 : Introduction to mobile ad hoc networks Lecture 1.2
... network for devices associated with a single person. ...
... network for devices associated with a single person. ...
What is a Network?
... folder or disk drive, or they may be connected to your computer, such as a printer or CD- ROM drive. These devices, accessible only to you, are local resources. Networking allows you to share resources among a group of computer users. ...
... folder or disk drive, or they may be connected to your computer, such as a printer or CD- ROM drive. These devices, accessible only to you, are local resources. Networking allows you to share resources among a group of computer users. ...
Firewall Deployment for SCADA-PCN
... problems, Reporting unusual traffic patterns Blocking infected traffic by deploying Front-line Anti-Virus Software on firewall Authentication services through passwords or Public Key Encryption Virtual Private Network (VPN) gateway services by setting up an encrypted tunnel between firewall and remo ...
... problems, Reporting unusual traffic patterns Blocking infected traffic by deploying Front-line Anti-Virus Software on firewall Authentication services through passwords or Public Key Encryption Virtual Private Network (VPN) gateway services by setting up an encrypted tunnel between firewall and remo ...
Slides - NUS Security Research
... • Test three sets of applications using major authentication/authorization SDKs – Facebook PHP SDK, Miscrosoft Live Connect, Windows 8 Authentication Broker SDK – 78%, 86%, 67% are vulnerable – Lead to modification of OAuth 2.0 specification ...
... • Test three sets of applications using major authentication/authorization SDKs – Facebook PHP SDK, Miscrosoft Live Connect, Windows 8 Authentication Broker SDK – 78%, 86%, 67% are vulnerable – Lead to modification of OAuth 2.0 specification ...
Remote Access
... • Takes advantage of using the public Internet as if it were a private network • Allow the public Internet to be used privately • Prior to VPNs, organizations were forced to lease expensive data connections from private carriers so employees could remotely connect to the organization’s network cs490 ...
... • Takes advantage of using the public Internet as if it were a private network • Allow the public Internet to be used privately • Prior to VPNs, organizations were forced to lease expensive data connections from private carriers so employees could remotely connect to the organization’s network cs490 ...
Hacking Wireless Networks
... uses the Orthogonal Frequency Division Multiplexing (OFDM) encoding class. The maximum speed supported by the 802.11a standard is 54Mbps. 802.11b: 802.11b is an amendment to the IEEE 802.11 specification that extended the throughput up to 11 Mbit/s using the same 2.4 GHz band. This specification und ...
... uses the Orthogonal Frequency Division Multiplexing (OFDM) encoding class. The maximum speed supported by the 802.11a standard is 54Mbps. 802.11b: 802.11b is an amendment to the IEEE 802.11 specification that extended the throughput up to 11 Mbit/s using the same 2.4 GHz band. This specification und ...
Trojan Horse
... Tricking a person into revealing some confidential information. An attack based on deceiving users or administrators at the target site. ...
... Tricking a person into revealing some confidential information. An attack based on deceiving users or administrators at the target site. ...
distributed
... • Marshalling is the packing of procedure parameters into a message packet – the RPC stubs call type-specific procedure to marshal or unmarshal the parameters of an RPC • the client stub marshals the parameters into a message • the server stub unmarshals the parameters and uses them to invoke the se ...
... • Marshalling is the packing of procedure parameters into a message packet – the RPC stubs call type-specific procedure to marshal or unmarshal the parameters of an RPC • the client stub marshals the parameters into a message • the server stub unmarshals the parameters and uses them to invoke the se ...
Linux+ Guide to Linux Certification
... • Products being shipped must first be located then transferred to correct location and truck – Mistakes in inventory or inability to locate items can be devastating ...
... • Products being shipped must first be located then transferred to correct location and truck – Mistakes in inventory or inability to locate items can be devastating ...
Linux+ Guide to Linux Certification
... – Can contain larger amounts of updatable information – Information transmitted via radio waves – Range typically about 1 foot at 5 Mbps ...
... – Can contain larger amounts of updatable information – Information transmitted via radio waves – Range typically about 1 foot at 5 Mbps ...
Topic 2: Lesson 3 Intro to Firewalls
... Protect internal network from outside threats creates choke point from outside of network mechanism that permits access control between two or more networks come in various forms: hardware and software, usually a combination ...
... Protect internal network from outside threats creates choke point from outside of network mechanism that permits access control between two or more networks come in various forms: hardware and software, usually a combination ...
Processes - William & Mary Computer Science
... • Marshalling is the packing of procedure parameters into a message packet – the RPC stubs call type-specific procedure to marshal or unmarshal the parameters of an RPC • the client stub marshals the parameters into a message • the server stub unmarshals the parameters and uses them to invoke the se ...
... • Marshalling is the packing of procedure parameters into a message packet – the RPC stubs call type-specific procedure to marshal or unmarshal the parameters of an RPC • the client stub marshals the parameters into a message • the server stub unmarshals the parameters and uses them to invoke the se ...
Defense Techniques
... • other fragments with non-zero offset rewrite these values with malicious ones • reassembled fragment is delivered to protected service ...
... • other fragments with non-zero offset rewrite these values with malicious ones • reassembled fragment is delivered to protected service ...
PPT_ch06
... – Removing programs that gave devices special permissions on the network Network+ Guide to Networks, 7th Edition ...
... – Removing programs that gave devices special permissions on the network Network+ Guide to Networks, 7th Edition ...
Wireless Communications and Networks
... issues of high prices, low data rates, occupational safety concerns, & licensing requirements now addressed key application areas: ...
... issues of high prices, low data rates, occupational safety concerns, & licensing requirements now addressed key application areas: ...
CS5038: The Electronic Society - Homepages | The University of
... Targets for all of C, I, and A are 0. When the shock hits, C (blue) is way below target. This causes spend (red) to go way above target, and system availability to go way below target; that is, the system’s operations have to be curtailed and money spent to fix the problem; with these actions taken, ...
... Targets for all of C, I, and A are 0. When the shock hits, C (blue) is way below target. This causes spend (red) to go way above target, and system availability to go way below target; that is, the system’s operations have to be curtailed and money spent to fix the problem; with these actions taken, ...
Watermarking technique is a particular embodiment of multimedia
... distance phone calls. Since VoWi-Fi operates from hotspot to hotspot or network-to-network, you may think that there are roaming charges involved. There are no roaming charges involved with VoIP. That’s right, you can take your VoWiFi phone from hotspot to hotspot, maintaining your connection (provi ...
... distance phone calls. Since VoWi-Fi operates from hotspot to hotspot or network-to-network, you may think that there are roaming charges involved. There are no roaming charges involved with VoIP. That’s right, you can take your VoWiFi phone from hotspot to hotspot, maintaining your connection (provi ...
WelcometoCISandCybercorps
... • University of Tulsa, Naval Postgraduate School, Iowa State University, Purdue University, University of Idaho and Carnegie Mellon University ...
... • University of Tulsa, Naval Postgraduate School, Iowa State University, Purdue University, University of Idaho and Carnegie Mellon University ...
arubaos 6.5 - Aruba Networks
... Older access layer networks were not built for the mobility and security requirements of today’s distributed enterprises. Traditionally, networks were built with a focus on Ethernet ports and physical locations, rather than the user or device connecting to the network. Consequently, the addition of ...
... Older access layer networks were not built for the mobility and security requirements of today’s distributed enterprises. Traditionally, networks were built with a focus on Ethernet ports and physical locations, rather than the user or device connecting to the network. Consequently, the addition of ...
How to bypass the firewall
... network is directly connected with the outside network. The main advantage of the packet-filtering router is its simplicity. It is fairly easyinstalled, effective and transparent to users, but it is difficult to configure. In addition, it is susceptible to security breaches caused by improper config ...
... network is directly connected with the outside network. The main advantage of the packet-filtering router is its simplicity. It is fairly easyinstalled, effective and transparent to users, but it is difficult to configure. In addition, it is susceptible to security breaches caused by improper config ...
Layer One Networking
... The data link is responsible for node to node validity and integrity of the transmission. The transmitted bits are divided into frames; for example, an Ethernet, Token Ring or FDDI frame in local area networks. Layers 1 and 2 are required for every type of communications. ...
... The data link is responsible for node to node validity and integrity of the transmission. The transmitted bits are divided into frames; for example, an Ethernet, Token Ring or FDDI frame in local area networks. Layers 1 and 2 are required for every type of communications. ...
Slides
... • Two types: packet filtering, and application gateways. • Packet filtering is done based on IP addresses, TCP or UDP ports, ICMP message type, TCP SYN or ACK bits (first segment has ACK=0 so this prevents outside users to open TCP connections with inside servers). • Application gateways may restric ...
... • Two types: packet filtering, and application gateways. • Packet filtering is done based on IP addresses, TCP or UDP ports, ICMP message type, TCP SYN or ACK bits (first segment has ACK=0 so this prevents outside users to open TCP connections with inside servers). • Application gateways may restric ...
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.