Top Five DNS Security Attack Risks and How to Avoid Them
... external name server “open” to recursive queries. For example, an inherent vulnerability occurs when a name server allows recursive queries from arbitrary IP addresses. This approach is vulnerable to cache-poisoning attacks, in which a hacker can induce the name server to cache fabricated data. In t ...
... external name server “open” to recursive queries. For example, an inherent vulnerability occurs when a name server allows recursive queries from arbitrary IP addresses. This approach is vulnerable to cache-poisoning attacks, in which a hacker can induce the name server to cache fabricated data. In t ...
Security Whitepaper, PDF
... Konica Minolta security standards Konica Minolta realised early on the importance of security issues in the digital age, where the risk of seriously damaging security breaches rises dramatically alongside rapidly growing worldwide communication possibilities. In response to these threats, Konica Min ...
... Konica Minolta security standards Konica Minolta realised early on the importance of security issues in the digital age, where the risk of seriously damaging security breaches rises dramatically alongside rapidly growing worldwide communication possibilities. In response to these threats, Konica Min ...
CCNA3:LAN
... Packets destined from R1 to 209.169.100.4/30 go through R2 (not the Ethernet LAN). Packets destined from R3 to 209.169.100.0/30 go through R2 (not the Ethernet LAN). If the link between R1 and SW1 fails: ...
... Packets destined from R1 to 209.169.100.4/30 go through R2 (not the Ethernet LAN). Packets destined from R3 to 209.169.100.0/30 go through R2 (not the Ethernet LAN). If the link between R1 and SW1 fails: ...
4th Edition: Chapter 1 - Universidad de Sevilla
... explicit structure allows identification, relationship of complex system’s pieces layered reference model for discussion modularization eases maintenance, updating of system change of implementation of layer’s service transparent to rest of system e.g., change in gate procedure doesn’t affect ...
... explicit structure allows identification, relationship of complex system’s pieces layered reference model for discussion modularization eases maintenance, updating of system change of implementation of layer’s service transparent to rest of system e.g., change in gate procedure doesn’t affect ...
Security Lecture
... Who might Bob, Alice be? … well, real-life Bobs and Alices! Web browser/server for electronic transactions (e.g., on-line purchases) on-line banking client/server DNS servers routers exchanging routing table updates other examples? ...
... Who might Bob, Alice be? … well, real-life Bobs and Alices! Web browser/server for electronic transactions (e.g., on-line purchases) on-line banking client/server DNS servers routers exchanging routing table updates other examples? ...
Document
... attacks over WLANs. Investigation of DoS attacks on wireless communication. 802.11w – a draft solution to the problem Network simulation of WLAN DoS Attacks Implementation and improvement of 802.11w to resolve DoS attacks. Verification and Validation ...
... attacks over WLANs. Investigation of DoS attacks on wireless communication. 802.11w – a draft solution to the problem Network simulation of WLAN DoS Attacks Implementation and improvement of 802.11w to resolve DoS attacks. Verification and Validation ...
OpenAirInterface: An Open LTE Network in a PC
... Cellular systems are expected to converge from a proprietary and expensive HW/SW platforms towards an open SW platforms over commodity HW Happened already for cloud service Happened already for handsets Happened already for 2G ...
... Cellular systems are expected to converge from a proprietary and expensive HW/SW platforms towards an open SW platforms over commodity HW Happened already for cloud service Happened already for handsets Happened already for 2G ...
CCNA Security
... • SNMP traps: Certain thresholds can be preconfigured. Events can be processed by the router and forwarded as SNMP traps to an external SNMP server. Requires the configuration and maintenance of an SNMP system. • Syslog: Configure routers to forward log messages to an external syslog service. This s ...
... • SNMP traps: Certain thresholds can be preconfigured. Events can be processed by the router and forwarded as SNMP traps to an external SNMP server. Requires the configuration and maintenance of an SNMP system. • Syslog: Configure routers to forward log messages to an external syslog service. This s ...
Military grade wireless ad hoc networks
... authenticity of the IP packet without prior security association with the sender • Just like with notes, each IP packet shall have all necessary information to verify authenticity ...
... authenticity of the IP packet without prior security association with the sender • Just like with notes, each IP packet shall have all necessary information to verify authenticity ...
5. Detailed working of RADIUS - Department of Computer Science
... The User-Password protection technique is flawed in many ways. It should not use a stream cipher The Response Authenticator is a good, but its not implemented well The Access-Request packet is not authenticated at all. Many client implementations do not create Request Authenticators that are s ...
... The User-Password protection technique is flawed in many ways. It should not use a stream cipher The Response Authenticator is a good, but its not implemented well The Access-Request packet is not authenticated at all. Many client implementations do not create Request Authenticators that are s ...
Chapter1
... Chapter 1: roadmap 1.1 What is the Internet? 1.2 Network edge 1.3 Network core 1.4 Network access and physical media 1.5 Internet structure and ISPs 1.6 Delay & loss in packet-switched networks 1.7 Protocol layers, service models 1.8 History Introduction ...
... Chapter 1: roadmap 1.1 What is the Internet? 1.2 Network edge 1.3 Network core 1.4 Network access and physical media 1.5 Internet structure and ISPs 1.6 Delay & loss in packet-switched networks 1.7 Protocol layers, service models 1.8 History Introduction ...
Chapter 3. QoS Mechanisms
... • An example of Layer 3 classification is IPTOS (Internet protocol type of service – IPv4 and IPv6 standard defined a prioritization field in the IP header RFC 1349 defined a TOS field in IPv4 header. The type of service field consists of a 3-bit precedence subfield, a 4-bit TOS subfield, and the fi ...
... • An example of Layer 3 classification is IPTOS (Internet protocol type of service – IPv4 and IPv6 standard defined a prioritization field in the IP header RFC 1349 defined a TOS field in IPv4 header. The type of service field consists of a 3-bit precedence subfield, a 4-bit TOS subfield, and the fi ...
4. TCP/IP - Faculty of Computer Science and Information Technology
... duplication of publicly used addresses does not occur. No two machines that connect to a public network can have the same IP address because public IP addresses are global and standardized. Private networks that are not connected to the Internet may use any host addresses Connecting a network using ...
... duplication of publicly used addresses does not occur. No two machines that connect to a public network can have the same IP address because public IP addresses are global and standardized. Private networks that are not connected to the Internet may use any host addresses Connecting a network using ...
TCP/IP For Security Administrators
... Fill a switch’s memory with bogus mappings Switch will flood all ports with all traffic since it doesn’t know where hosts are ...
... Fill a switch’s memory with bogus mappings Switch will flood all ports with all traffic since it doesn’t know where hosts are ...
Chapter1_5thed - Computer Science Division
... Access networks and physical media Q: How to connect end systems to edge router? residential access nets institutional access networks (school, company) mobile access networks ...
... Access networks and physical media Q: How to connect end systems to edge router? residential access nets institutional access networks (school, company) mobile access networks ...
Network Cooperation for Client-AP Association Optimization
... Fig. 2: Qualtitative example of why cooperation is needed: (a) Default mode chooses the least distance AP, (b) Intra-network optimization selects least crowded AP if their distance to the client are comparable, (c) Cooperative optimization selects AP with least internal and external interference ...
... Fig. 2: Qualtitative example of why cooperation is needed: (a) Default mode chooses the least distance AP, (b) Intra-network optimization selects least crowded AP if their distance to the client are comparable, (c) Cooperative optimization selects AP with least internal and external interference ...
Intrusion Detection System(IDS) Overview
... In short, its ‘burglar alarm’ for the network. An IDS can detect network scans, DoS, unauthorized attempt to connect to services in the network, improper activity etc.. ...
... In short, its ‘burglar alarm’ for the network. An IDS can detect network scans, DoS, unauthorized attempt to connect to services in the network, improper activity etc.. ...
Network Cooperation for Client-AP Association Optimization
... Fig. 2: Qualtitative example of why cooperation is needed: (a) Default mode chooses the least distance AP, (b) Intra-network optimization selects least crowded AP if their distance to the client are comparable, (c) Cooperative optimization selects AP with least internal and external interference ...
... Fig. 2: Qualtitative example of why cooperation is needed: (a) Default mode chooses the least distance AP, (b) Intra-network optimization selects least crowded AP if their distance to the client are comparable, (c) Cooperative optimization selects AP with least internal and external interference ...
Security Analysis of a Single Sign
... credential of a legal user. The other attack, an “impersonation attack without credentials,” demonstrates how an outside attacker may be able to freely make use of resources and services offered by service providers, since the attacker can successfully impersonate a legal user without holding a vali ...
... credential of a legal user. The other attack, an “impersonation attack without credentials,” demonstrates how an outside attacker may be able to freely make use of resources and services offered by service providers, since the attacker can successfully impersonate a legal user without holding a vali ...
Inmarsat BGAN Network Overview
... The GGSN can be considered as a collection of virtual routers. Each of these virtual routers has associated with it a collection of interfaces, filters, routing tables, rules and a name that together make up the APN. Each APN is unique, but the same APN name may be used by more than one GGSN. The as ...
... The GGSN can be considered as a collection of virtual routers. Each of these virtual routers has associated with it a collection of interfaces, filters, routing tables, rules and a name that together make up the APN. Each APN is unique, but the same APN name may be used by more than one GGSN. The as ...
Expediting Incident Response with Foundstone ERS
... It discovers hosts and network devices, collects data about them, and illustrates this information in easy-toread tables and diagrams. Foundstone ERS also helps the CSIRT understand a device’s context, how it fits within the overall network topology. Although the concept is simple, the value of an u ...
... It discovers hosts and network devices, collects data about them, and illustrates this information in easy-toread tables and diagrams. Foundstone ERS also helps the CSIRT understand a device’s context, how it fits within the overall network topology. Although the concept is simple, the value of an u ...
LTE-WiFi Handover Strangelove - Institute for Computing and
... In larger companies, universities and conferences, people currently expect to have a wireless connection everywhere they go. One of the fine examples is the Chaos Communication Congress, which takes place every year just between Christmas and New Year. Their 30th conference had about 9000 visitors a ...
... In larger companies, universities and conferences, people currently expect to have a wireless connection everywhere they go. One of the fine examples is the Chaos Communication Congress, which takes place every year just between Christmas and New Year. Their 30th conference had about 9000 visitors a ...
Using NViz tool for Environmental Sensor Networks Anh-Vu Dinh-Duc , Non-member
... various visualization tools have been created for certain projects so far, these tools can only be used in certain scenarios, due to their hard-coded packet formats and network’s properties. To speed up development process, a visualization tool which can adapt to any kind of WSN is essentially neces ...
... various visualization tools have been created for certain projects so far, these tools can only be used in certain scenarios, due to their hard-coded packet formats and network’s properties. To speed up development process, a visualization tool which can adapt to any kind of WSN is essentially neces ...
IEEE and LAN Protocols
... • Institution of Electrical and Electronic Engineering (IEEE) • A professional non-profit organization • Project group 802 under IEEE – Entrusted with the task of setting standards relating to physical and logical links of nodes in a ...
... • Institution of Electrical and Electronic Engineering (IEEE) • A professional non-profit organization • Project group 802 under IEEE – Entrusted with the task of setting standards relating to physical and logical links of nodes in a ...
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.