Ch – 1 Introduction
... transformation of, a data unit that allows a recipient of the data unit to prove the source and integrity of the data unit and protect against forgery (e.g., by the recipient). • Access Control: A variety of mechanisms that enforce access rights to resources. • Data Integrity: A variety of mechanism ...
... transformation of, a data unit that allows a recipient of the data unit to prove the source and integrity of the data unit and protect against forgery (e.g., by the recipient). • Access Control: A variety of mechanisms that enforce access rights to resources. • Data Integrity: A variety of mechanism ...
Intrusion Detection
... divert and hold attacker to collect activity info without exposing production systems ...
... divert and hold attacker to collect activity info without exposing production systems ...
Information Security Databases and (Inter)Networks
... • Extra layer of security by adding a perimeter network. – Vulnerable bastion host is isolated from the internal network. – Prevents possibility of snooping on the Intranet after breaking in to the bastion host. – Services from bastion host to Internet may differ from services from bastion host to I ...
... • Extra layer of security by adding a perimeter network. – Vulnerable bastion host is isolated from the internal network. – Prevents possibility of snooping on the Intranet after breaking in to the bastion host. – Services from bastion host to Internet may differ from services from bastion host to I ...
cewit 2008 - TeraPaths
... being” of reservations: – Selects active reservations initiated by site (site responsibility) – Finds circuit/VLAN associated with each reservation – Performs a circuit check with a quick pinging of other site’s router (private ip address space) – Less than 100% success triggers a recheck with longe ...
... being” of reservations: – Selects active reservations initiated by site (site responsibility) – Finds circuit/VLAN associated with each reservation – Performs a circuit check with a quick pinging of other site’s router (private ip address space) – Less than 100% success triggers a recheck with longe ...
WaveDeploy
... WaveBlade generates stateful, scalable, mobile clients, wired and wireless • Up to 500 clients / servers per test port, up to 1000 QoS test traffic flows per test port ...
... WaveBlade generates stateful, scalable, mobile clients, wired and wireless • Up to 500 clients / servers per test port, up to 1000 QoS test traffic flows per test port ...
kjjhghgff
... Wireless modem: Many mobile devices, such as a PDA, contain a wireless modem Network interface card (NIC): Each computer on a network must have a NIC. Most computers have a built-in NIC. Gateway: Software and hardware linking two different types of networks that use different protocols ...
... Wireless modem: Many mobile devices, such as a PDA, contain a wireless modem Network interface card (NIC): Each computer on a network must have a NIC. Most computers have a built-in NIC. Gateway: Software and hardware linking two different types of networks that use different protocols ...
module_70
... client connects to a SOCKS proxy server. The proxy server connects to the application server on behalf of the client, and relays data between the client and the application server. For the application server, the proxy server is the ...
... client connects to a SOCKS proxy server. The proxy server connects to the application server on behalf of the client, and relays data between the client and the application server. For the application server, the proxy server is the ...
Enterprise Ethernet gets a sharper edge TextStart Highly reliable
... triangular and box loops into a tree under the root node to eliminate the loop problem. Multiple upstream links for a single access or aggregation switch are bundled into one entity, which simplifies the network structure, as Fig. 3 (see PDF) shows. A network usually has much fewer aggregation and c ...
... triangular and box loops into a tree under the root node to eliminate the loop problem. Multiple upstream links for a single access or aggregation switch are bundled into one entity, which simplifies the network structure, as Fig. 3 (see PDF) shows. A network usually has much fewer aggregation and c ...
Security Signaling During Handovers
... • 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 ...
CWNA Guide to Wireless LANs,Third Edition
... encourages users to be aware of security issues and procedures • Securing the devices so that unauthorized users are prohibited from gaining physical access to the equipment is an important security procedure ...
... encourages users to be aware of security issues and procedures • Securing the devices so that unauthorized users are prohibited from gaining physical access to the equipment is an important security procedure ...
Encrypting Wireless Data with VPN Techniques
... – More moving parts and more likely to break. – Clients and servers can be difficult to configure, deploy and maintain. – Expensive in almost any size network. – Advanced routing is difficult – Lack of interoperability between different vendors of VPN technology. – Lack of operating system support a ...
... – More moving parts and more likely to break. – Clients and servers can be difficult to configure, deploy and maintain. – Expensive in almost any size network. – Advanced routing is difficult – Lack of interoperability between different vendors of VPN technology. – Lack of operating system support a ...
Tutorial 2 Solutions
... contention period is longer than thee round-trip delay of 2tprop of wired LAN because of waiting for the receiver’s acknowledgment. -Security: In a wired LAN, the transmission medium is usually physically secure. In a wireless LAN, any device within the geographic transmission area can intercept the ...
... contention period is longer than thee round-trip delay of 2tprop of wired LAN because of waiting for the receiver’s acknowledgment. -Security: In a wired LAN, the transmission medium is usually physically secure. In a wireless LAN, any device within the geographic transmission area can intercept the ...
Erie 1 BOCES` Computer Based Planning meeting PowerPoint from
... Technology Readiness Tool (TRT) • Complete the tool especially if you are getting Microsoft vouchers. • If your district doesn’t have an authorized user or it needs to change email [email protected] • Readiness does not mean readiness – check your “testing devices ready” against your largest ...
... Technology Readiness Tool (TRT) • Complete the tool especially if you are getting Microsoft vouchers. • If your district doesn’t have an authorized user or it needs to change email [email protected] • Readiness does not mean readiness – check your “testing devices ready” against your largest ...
Ağ Güvenliği - Dr. Mustafa Cem Kasapbasi
... capable of hiding the structure and addressing scheme of a private network from the public prevent unauthorized but accidental or intended disclosure of information by users prevent attacks by malicious users already behind the firewall ...
... capable of hiding the structure and addressing scheme of a private network from the public prevent unauthorized but accidental or intended disclosure of information by users prevent attacks by malicious users already behind the firewall ...
Control of Wide Area Networks
... of a mainframe or minicomputer that serves remotely distributed dumb terminals. Network managers lease communications channels from a common long-distance carrier and tie together terminals and the central computer using a star (or other) topology. (WAN topologies are described in more detail later ...
... of a mainframe or minicomputer that serves remotely distributed dumb terminals. Network managers lease communications channels from a common long-distance carrier and tie together terminals and the central computer using a star (or other) topology. (WAN topologies are described in more detail later ...
CISSP – Chapter 7
... OSI model – layer 2 data link 492 • Layer 2 Data Link – data link goes hand in hand with physical layer. The data link level actually defines the format of how data “Frames”* will be sent over the physical medium, so that two network cards of the same network type will actually be able to communica ...
... OSI model – layer 2 data link 492 • Layer 2 Data Link – data link goes hand in hand with physical layer. The data link level actually defines the format of how data “Frames”* will be sent over the physical medium, so that two network cards of the same network type will actually be able to communica ...
Cisco Intelligent Networked Manufacturing
... and other other Sensors Input/Output Devices Devices Input/Output ...
... and other other Sensors Input/Output Devices Devices Input/Output ...
Basic Networking
... Client/Server Networks • Server: central computer used to facilitate communication and resource sharing between other computers on the 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 comput ...
... Client/Server Networks • Server: central computer used to facilitate communication and resource sharing between other computers on the 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 comput ...
Voice over Internet Protocol: Policy Implications and Market Realities
... • Most users still want numbers, not SIP addresses! • Potential barrier to market entry and innovation • Location independence/nomadic considerations • Geographic v. non-geographic ranges • Scarcity concerns and strategies ...
... • Most users still want numbers, not SIP addresses! • Potential barrier to market entry and innovation • Location independence/nomadic considerations • Geographic v. non-geographic ranges • Scarcity concerns and strategies ...
Build Secure Network Infrastructure and Reduce Risks and Losses
... deployed software puts servers and client workstations at risk for becoming compromised by viruses, botnet programs and other malware. The development of more targeted attack methods and clever social engineering makes it more likely that even careful educated users can become victims. Finally, the ...
... deployed software puts servers and client workstations at risk for becoming compromised by viruses, botnet programs and other malware. The development of more targeted attack methods and clever social engineering makes it more likely that even careful educated users can become victims. Finally, the ...
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 ...
Wireless security
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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.