Lecture 1: Course Introduction and Overview
... • Change is continuous and system designs should adapt – Not: look how stupid batch processing was – But: Made sense at the time ...
... • Change is continuous and system designs should adapt – Not: look how stupid batch processing was – But: Made sense at the time ...
Network topology models.
... A point-to-multipoint topology is where a central device controls the path to all other devices. It is different from the star in that the central device is intelligent and actually makes decisions as to what data it will accept and where that data is going to go. Wireless networks often implement a ...
... A point-to-multipoint topology is where a central device controls the path to all other devices. It is different from the star in that the central device is intelligent and actually makes decisions as to what data it will accept and where that data is going to go. Wireless networks often implement a ...
MAC intelligence for adaptive multimedia in 802.11
... Let us understand why permissible throughput is critical in wireless links, especially MANET links where hidden and exposed terminals exist. A. In a wired point to point link this quantity would always be the bandwidth of the point to point connection, since this is the maximum throughput achievabl ...
... Let us understand why permissible throughput is critical in wireless links, especially MANET links where hidden and exposed terminals exist. A. In a wired point to point link this quantity would always be the bandwidth of the point to point connection, since this is the maximum throughput achievabl ...
CCNA Concentrations
... CCNA Voice Verifies individual skills for SMB and Enterprise Branch job roles: Voice Administrators Voice Engineers Voice Managers Validates skills in voice applications and infrastructure concepts Capable of performing baseline installation, configuration and maintenance tasks on Cisco VoIP ...
... CCNA Voice Verifies individual skills for SMB and Enterprise Branch job roles: Voice Administrators Voice Engineers Voice Managers Validates skills in voice applications and infrastructure concepts Capable of performing baseline installation, configuration and maintenance tasks on Cisco VoIP ...
Firewall on Demand multidomain A top-down approach
... BGP Flowspec defined in RFC 5575 Layer 4 (TCP and UDP) firewall filters to be distributed in BGP on both a intradomain and inter-domain basis Match ...
... BGP Flowspec defined in RFC 5575 Layer 4 (TCP and UDP) firewall filters to be distributed in BGP on both a intradomain and inter-domain basis Match ...
Switched LAN Architecture
... in to three layers: access, distribution, and core. Access Layer The access layer interfaces with end devices, such as PCs, printers, and IP phones, to provide access to the rest of the network. The access layer can include routers, switches, bridges, hubs, and wireless access points. The main purpo ...
... in to three layers: access, distribution, and core. Access Layer The access layer interfaces with end devices, such as PCs, printers, and IP phones, to provide access to the rest of the network. The access layer can include routers, switches, bridges, hubs, and wireless access points. The main purpo ...
Assess, Respond, and Insure
... ACE policyholders can assess their security posture using the FireEye Threat Analytics Platform, which provides an in-depth, individualized look at their risks. This Health Check uses FireEye technology, intelligence, and expertise to analyze the policyholder organization’s network traffic, files, a ...
... ACE policyholders can assess their security posture using the FireEye Threat Analytics Platform, which provides an in-depth, individualized look at their risks. This Health Check uses FireEye technology, intelligence, and expertise to analyze the policyholder organization’s network traffic, files, a ...
- Learn Group
... Prof. Yousef B. Mahdy Prof. Yousef B. Mahdy -2014-2015, Assuit University, Egypt ...
... Prof. Yousef B. Mahdy Prof. Yousef B. Mahdy -2014-2015, Assuit University, Egypt ...
Physical Security
... – The buffer overflow vulnerability is a result of poor coding practices on the part of software programmers. – This occurs when an application can accept more input than it has assigned storage space and the input data overwrites other program areas. ...
... – The buffer overflow vulnerability is a result of poor coding practices on the part of software programmers. – This occurs when an application can accept more input than it has assigned storage space and the input data overwrites other program areas. ...
Z2400 Series User`s Guide
... for signs of misuse. Remove the power cord from the electrical outlet before inspecting it. Refer service or repairs, other than those described in the user documentation, to a professional service person. This product is designed, tested, and approved to meet strict global safety standards with the ...
... for signs of misuse. Remove the power cord from the electrical outlet before inspecting it. Refer service or repairs, other than those described in the user documentation, to a professional service person. This product is designed, tested, and approved to meet strict global safety standards with the ...
Admission Control in IP Multicast over Heterogeneous Access
... – Receivers are free to join any group – Sources are free to transmit to any group Makes IP multicast-based commercial services difficult to implement ...
... – Receivers are free to join any group – Sources are free to transmit to any group Makes IP multicast-based commercial services difficult to implement ...
Ultra Wide Band (UWB) Technology and Applications
... So why is UWB so Interesting? • 7.5 Ghz of “free spectrum” in the U.S. – FCC recently legalized UWB for commercial use – Spectrum allocation overlays existing users, but its allowed power level is very low to minimize interference • Very high data rates possible – 500 Mbps can be achieved at distan ...
... So why is UWB so Interesting? • 7.5 Ghz of “free spectrum” in the U.S. – FCC recently legalized UWB for commercial use – Spectrum allocation overlays existing users, but its allowed power level is very low to minimize interference • Very high data rates possible – 500 Mbps can be achieved at distan ...
PDF - IBM Redbooks
... storage, and many others are all readily available. The ease and speed at which these new applications can be installed or simply accessed reduces the effectiveness of a perimeter-based security architecture and provides many new types of risks. These applications can be used by an attacker to obtai ...
... storage, and many others are all readily available. The ease and speed at which these new applications can be installed or simply accessed reduces the effectiveness of a perimeter-based security architecture and provides many new types of risks. These applications can be used by an attacker to obtai ...
Design and Implementation of a Fiber to the Home FTTH Access
... link (fiber) entering the splitter may be split into a given number of fibers leaving the splitter and there is usually three or more levels of fibers corresponding to two or more levels of splitters. This enables sharing of each fiber by many users. Due to power splitting the signal gets attenuated ...
... link (fiber) entering the splitter may be split into a given number of fibers leaving the splitter and there is usually three or more levels of fibers corresponding to two or more levels of splitters. This enables sharing of each fiber by many users. Due to power splitting the signal gets attenuated ...
Extensions to the FTP Protocol
... The File Transfer Protocol provides a mechanism that allows a client to establish an FTP control connection and transfer a file between two FTP servers. This "Proxy FTP" mechanism can be used to decrease the amount of traffic on the network; the client instructs one server to transfer a file to anot ...
... The File Transfer Protocol provides a mechanism that allows a client to establish an FTP control connection and transfer a file between two FTP servers. This "Proxy FTP" mechanism can be used to decrease the amount of traffic on the network; the client instructs one server to transfer a file to anot ...
MSG and PSE Sales Presentation
... BENEFITS MSG offers complete defense against email threats with 99%+ anti-spam accuracy and 100% anti-virus protection. Reduces the load on mail servers and the company network, minimizing the need for hardware investments. Email encryption prevents accidental leaks of confidential data. ...
... BENEFITS MSG offers complete defense against email threats with 99%+ anti-spam accuracy and 100% anti-virus protection. Reduces the load on mail servers and the company network, minimizing the need for hardware investments. Email encryption prevents accidental leaks of confidential data. ...
Waukesha County Technical College
... down of the server or service and/or break of suspicious connections when a unauthorized connection attempt is discovered. Active ...
... down of the server or service and/or break of suspicious connections when a unauthorized connection attempt is discovered. Active ...
Application Security within Java 2, Standard Edition (J2SE)
... is loaded, the system uses a class called the SecureClassLoader (java.security.SecureClassLoader) to load the class. First the class is loaded from the specified URL and then the digital signature of the class is checked to make sure that the class is correct and intact. A CodeSource object is deriv ...
... is loaded, the system uses a class called the SecureClassLoader (java.security.SecureClassLoader) to load the class. First the class is loaded from the specified URL and then the digital signature of the class is checked to make sure that the class is correct and intact. A CodeSource object is deriv ...
ppt
... (CIDR) and is the routing protocol that is used today to route between autonomous systems. BGP uses TCP to establish a reliable connection between two BGP speakers on port 179. A path vector protocol, because it stores routing information as a combination of a destination and attributes of the path ...
... (CIDR) and is the routing protocol that is used today to route between autonomous systems. BGP uses TCP to establish a reliable connection between two BGP speakers on port 179. A path vector protocol, because it stores routing information as a combination of a destination and attributes of the path ...
point-to-point deep fiber access - NET-im-web
... user gets a dedicated connection that will meet future upgrade requirements and can provide unlimited and symmetric bandwidth. Other key benefits are high scalability and service transparency, which means the ability to provide any service irrespective of other users in the network. P2P fiber also o ...
... user gets a dedicated connection that will meet future upgrade requirements and can provide unlimited and symmetric bandwidth. Other key benefits are high scalability and service transparency, which means the ability to provide any service irrespective of other users in the network. P2P fiber also o ...
IBM® Security Network Protection XGS Initial Setup and Deployment
... Reminder: You must dial-in to the phone conference to listen to the panelists. The web cast does not include audio. • USA: 866-803-2145 • USA toll: 1-210-795-1099 • Participant passcode: 1322112 • Slides & additional dial-in numbers: http://bit.ly/ibm-openmic-XGS_20150520-doc NOTICE: By participatin ...
... Reminder: You must dial-in to the phone conference to listen to the panelists. The web cast does not include audio. • USA: 866-803-2145 • USA toll: 1-210-795-1099 • Participant passcode: 1322112 • Slides & additional dial-in numbers: http://bit.ly/ibm-openmic-XGS_20150520-doc NOTICE: By participatin ...
A340105
... mean s “for a particular purpose” or “in a way that is not planned in advance” [ 1] . The a d- hoc networ ks are designed to work autonomous ly, without any centralized infrastructure. In practice this means that netw rk nodess hould be able to communicate with each other even if there is no static ...
... mean s “for a particular purpose” or “in a way that is not planned in advance” [ 1] . The a d- hoc networ ks are designed to work autonomous ly, without any centralized infrastructure. In practice this means that netw rk nodess hould be able to communicate with each other even if there is no static ...
Media Access Control #7
... Ethernet to another Bridges (sometimes called hubs) Interconnects multiple access LANs to form Extended LANs Only forwards frames destined for other LANs Link layer forwarding based on MAC address Bridges are devices that forward link-level frames from one physical LAN to another Bridging ...
... Ethernet to another Bridges (sometimes called hubs) Interconnects multiple access LANs to form Extended LANs Only forwards frames destined for other LANs Link layer forwarding based on MAC address Bridges are devices that forward link-level frames from one physical LAN to another Bridging ...
FCAPS - azimi.edu
... “If you get a time-out error, see if you can ping the other side” “If that doesn’t work, run IP config to see if your IP is configured” ...
... “If you get a time-out error, see if you can ping the other side” “If that doesn’t work, run IP config to see if your IP is configured” ...
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.