70-687 8.1 Lecture Slides Lesson 10
... network, you can use the Forget this network option if you are currently in range or the netsh wlan delete profile name=”” command if the network is no longer
within range of your computer.
• Adhoc mode is used when you configure a wireless network
adapter to bypass a WAP and connect d ...
... network, you can use the Forget this network option if you are currently in range or the netsh wlan delete profile name=”
, or - Geoff Huston
... – TCP attempts to saturate network resources using a cooperative model of congestion limit probing (networkclocking of data transfer) – UDP uses an external clocking model that is normally impervious to network conditions – The fit is often not entirely comfortable • hence the QoS effort to attempt ...
... – TCP attempts to saturate network resources using a cooperative model of congestion limit probing (networkclocking of data transfer) – UDP uses an external clocking model that is normally impervious to network conditions – The fit is often not entirely comfortable • hence the QoS effort to attempt ...
Network Hardware File
... Server farms On smaller networks, network services are performed by software in a single server. On busy LANs, multiple servers share the work… •Login servers – authenticate users •Proxy servers – cache downloads •DHCP servers – allocate IP addresses •Print servers –manage print job queues •Web/FTP ...
... Server farms On smaller networks, network services are performed by software in a single server. On busy LANs, multiple servers share the work… •Login servers – authenticate users •Proxy servers – cache downloads •DHCP servers – allocate IP addresses •Print servers –manage print job queues •Web/FTP ...
CSCE 790: Computer Network Security
... Sequence Number Overflow Anti-Replay Window AH and ESP information Lifetime IPSec Protocol Mode Path MTU ...
... Sequence Number Overflow Anti-Replay Window AH and ESP information Lifetime IPSec Protocol Mode Path MTU ...
Networking
... Consider packing sniffing software threat for people who share a hub and have not activated network encryption Data sent “in the clear” means it has not been encrypted, and therefore is vulnerable to eavesdropping via a hub ...
... Consider packing sniffing software threat for people who share a hub and have not activated network encryption Data sent “in the clear” means it has not been encrypted, and therefore is vulnerable to eavesdropping via a hub ...
Chan
... networks (Fig. 3) o Data is sent along scheduled end-to-end path in optical signals in the data plane, bypassing routers and E-O-E conversions o A control plane is used to manage the whole network, perform scheduling, network reconfiguration, and faults diagnostic, etc ...
... networks (Fig. 3) o Data is sent along scheduled end-to-end path in optical signals in the data plane, bypassing routers and E-O-E conversions o A control plane is used to manage the whole network, perform scheduling, network reconfiguration, and faults diagnostic, etc ...
E-Commerce and Bank Security
... Application server should shield that database server from direct contact with web servers ...
... Application server should shield that database server from direct contact with web servers ...
Chapter6
... access of data frames: avoid collisions of long data frames sender first transmits small request-to-send (RTS) packets to BS using CSMA RTSs may still collide with each other (but they’re short) BS broadcasts clear-to-send CTS in response to RTS RTS heard by all nodes ...
... access of data frames: avoid collisions of long data frames sender first transmits small request-to-send (RTS) packets to BS using CSMA RTSs may still collide with each other (but they’re short) BS broadcasts clear-to-send CTS in response to RTS RTS heard by all nodes ...
Expanded Notes: Common Network Threats Parts 1 and 2
... WEP cracking/WPA cracking. WEP cracking or WPA cracking is using a packet sniffer to capture the password and/or the preshared key on a wireless network. Wired Equivalent Privacy (WEP) can be cracked in minutes. Wi-Fi Protected Access (WPA) cracking will take hours, but it can still be cracked. Neit ...
... WEP cracking/WPA cracking. WEP cracking or WPA cracking is using a packet sniffer to capture the password and/or the preshared key on a wireless network. Wired Equivalent Privacy (WEP) can be cracked in minutes. Wi-Fi Protected Access (WPA) cracking will take hours, but it can still be cracked. Neit ...
COS 217, Spring 2005 - Cs.princeton.edu
... • Perhaps a header format is not the defining piece of a new architecture – Definition and placement of functionality – Not just data plane, but also control and management – And division between end hosts and the network ...
... • Perhaps a header format is not the defining piece of a new architecture – Definition and placement of functionality – Not just data plane, but also control and management – And division between end hosts and the network ...
Comp 100 Lecture Notes Chapter 7
... o and several internal IP Addresses to local devices, e.g., computers, printers which creates a physical firewall to the outside world. The router security must be modified to allow particular trusted external sites to access the system. The internal IP Addresses may be permanently assigned to each ...
... o and several internal IP Addresses to local devices, e.g., computers, printers which creates a physical firewall to the outside world. The router security must be modified to allow particular trusted external sites to access the system. The internal IP Addresses may be permanently assigned to each ...
Module F - Columbus State University
... without the announcement of yet another serious overflowtriggered vulnerability. Overflows occur when a program tries to store more data than the allocated memory can hold. The extra data slops over into the adjacent memory area, overwriting what was already there, including data or instructions. ...
... without the announcement of yet another serious overflowtriggered vulnerability. Overflows occur when a program tries to store more data than the allocated memory can hold. The extra data slops over into the adjacent memory area, overwriting what was already there, including data or instructions. ...
CPSC 463 Networks and Distributed Processing
... • Clients sending messages are viewed as procedure calls with the reply being the return from the procedure • Contrast this to the more “conventional” school which views I/O with primitives such as X-DATA.request and X-DATA.return as I/O and interrupts respectively. ...
... • Clients sending messages are viewed as procedure calls with the reply being the return from the procedure • Contrast this to the more “conventional” school which views I/O with primitives such as X-DATA.request and X-DATA.return as I/O and interrupts respectively. ...
Course name Code/No Units Credit Units Prerequisite Lecture Lab
... List some different protocol attacks to which TCP/IP is susceptible. Describe how the different protocol attacks (e.g. TCP/IP) works against an organization’s network. Give examples of shared concerns across a specified set of security domains. Give examples of concerns that are specific to specifie ...
... List some different protocol attacks to which TCP/IP is susceptible. Describe how the different protocol attacks (e.g. TCP/IP) works against an organization’s network. Give examples of shared concerns across a specified set of security domains. Give examples of concerns that are specific to specifie ...
Speakers
... •Applications not supported on TS/Citrix (especially now that TS is 64bit only). •Multiple user environment resource issues. •General challenges supporting Citrix/TS environments. (External device issues such as printers & scanners on clients) •Multiple licensing costs (CALS). VDI addresses many of ...
... •Applications not supported on TS/Citrix (especially now that TS is 64bit only). •Multiple user environment resource issues. •General challenges supporting Citrix/TS environments. (External device issues such as printers & scanners on clients) •Multiple licensing costs (CALS). VDI addresses many of ...
A Home Mobile Healthcare System for Wheelchair Users
... Intelligent actuators: IR, RFID, Bluetooth etc. ...
... Intelligent actuators: IR, RFID, Bluetooth etc. ...
Introduction - WordPress.com
... Intracell Services (for STAs and APs) • Authentication – a station must authenticate itself before permitted to send data. • Deauthentication – a authenticated station wanting to leave the network is deauthenticated. • Privacy – manages the encryption and decryption. The algorithm specified is RC4 ...
... Intracell Services (for STAs and APs) • Authentication – a station must authenticate itself before permitted to send data. • Deauthentication – a authenticated station wanting to leave the network is deauthenticated. • Privacy – manages the encryption and decryption. The algorithm specified is RC4 ...
Communication - Princeton University
... Joint ORBIT and VINI Experiment • ORBIT: wireless edge – Two wireless access points – Each tunneled to a different VINI node – Mobile device that moves back and forth ...
... Joint ORBIT and VINI Experiment • ORBIT: wireless edge – Two wireless access points – Each tunneled to a different VINI node – Mobile device that moves back and forth ...
CDI 5400 Flowmeter
... Determine the network address of the gateway. A link to software to do this is available at CDIMeters.com/networking. The web portal of the gateway can be accessed by entering its address in a browser; no changes should be needed at this time, unless you wish to assign it a fixed IP address. Proceed ...
... Determine the network address of the gateway. A link to software to do this is available at CDIMeters.com/networking. The web portal of the gateway can be accessed by entering its address in a browser; no changes should be needed at this time, unless you wish to assign it a fixed IP address. Proceed ...
ppt1
... Addressing: separate issue of obtaining an IP address in a foreign domain ... any suitable mechanism such as DHCP Locating a Mobile Host ...
... Addressing: separate issue of obtaining an IP address in a foreign domain ... any suitable mechanism such as DHCP Locating a Mobile Host ...
A day in the life of an IEEE802.11 Station
... • Several APs in a single area may be connected to a single hub or switch or they can use virtual LAN if the link=layer connection APs act as bridges APs are configured to be part of the ESS ...
... • Several APs in a single area may be connected to a single hub or switch or they can use virtual LAN if the link=layer connection APs act as bridges APs are configured to be part of the ESS ...
Network Components Presentation
... Use network addresses and addresses of other routers to create a route between two networks so must keep tables of addresses. These tables are copied between routers using routing information protocol (RIP). Often used to connects LANs & WANs e.g. connect a LAN to the internet using one IP addre ...
... Use network addresses and addresses of other routers to create a route between two networks so must keep tables of addresses. These tables are copied between routers using routing information protocol (RIP). Often used to connects LANs & WANs e.g. connect a LAN to the internet using one IP addre ...
Presentation_Sharmistha_Roy
... disrupt functioning of CPU or network card or can overload ethernet link, based on limitation of hardware ...
... disrupt functioning of CPU or network card or can overload ethernet link, based on limitation of hardware ...
Connectivity, the Wireless Revolution, and Communications
... Competent end users need to understand the concept of connectivity, the impact of the wireless revolution, and the elements of a communications system. They must also understand the basics of communications channels, connection devices, data transmission, networks, network architectures, and network ...
... Competent end users need to understand the concept of connectivity, the impact of the wireless revolution, and the elements of a communications system. They must also understand the basics of communications channels, connection devices, data transmission, networks, network architectures, and network ...
Internet and LAN Technology
... travels on a “first come, first served” basis. If two workstations attempt to send data at the same time, a collision occurs. That data must be resent. CLICK TO START ...
... travels on a “first come, first served” basis. If two workstations attempt to send data at the same time, a collision occurs. That data must be resent. CLICK TO START ...
Wireless security
.jpg?width=300)
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.