Chapter 2 Networking Overview
... applications at the socket layer. Allows an application to have authenticated, encrypted communications across a network Uses digital certificates to authenticate systems and distribute encryption keys Supports one-way authentication of server to client and two-way authentication Used by web ...
... applications at the socket layer. Allows an application to have authenticated, encrypted communications across a network Uses digital certificates to authenticate systems and distribute encryption keys Supports one-way authentication of server to client and two-way authentication Used by web ...
IP Address - Department of Computing & Immersive Technologies
... Physically burned into the NIC Doesn’t change The device’s real identity Layer 3 / Protocol address Configurable Can be changed The device’s “mailing” address Needs to change when device is moved connected to a network having different network address ...
... Physically burned into the NIC Doesn’t change The device’s real identity Layer 3 / Protocol address Configurable Can be changed The device’s “mailing” address Needs to change when device is moved connected to a network having different network address ...
Firewalls
... – NAT Firewalls In a functioning network, every host is assigned an IP address. In a fixed network where these addresses are static, it is easy for a hacker to get hold of a host and use it to stage attacks on other hosts within and outside the network. To prevent this from happening, a NAT filter c ...
... – NAT Firewalls In a functioning network, every host is assigned an IP address. In a fixed network where these addresses are static, it is easy for a hacker to get hold of a host and use it to stage attacks on other hosts within and outside the network. To prevent this from happening, a NAT filter c ...
Network Layer
... Goal: allow host to dynamically obtain its IP address from network server when it joins network Can renew its lease on address in use Allows reuse of addresses (only hold address while connected an “on”) Support for mobile users who want to join network (more shortly) ...
... Goal: allow host to dynamically obtain its IP address from network server when it joins network Can renew its lease on address in use Allows reuse of addresses (only hold address while connected an “on”) Support for mobile users who want to join network (more shortly) ...
Network Forensics Tracking Hackers Through Cyberspace.
... • An attacker attempts to recover the WEP encryption key to gain unauthorized access to a WEP-encrypted network. • Forced generation of large amounts of initialization vectors (IV) until right one is ...
... • An attacker attempts to recover the WEP encryption key to gain unauthorized access to a WEP-encrypted network. • Forced generation of large amounts of initialization vectors (IV) until right one is ...
Elements of a Small PC Network
... – One station transmits a frame to a switch (data link layer operation) – Switch only transmits frame out port of destination PC Switch – No broadcasting out all ports Switch ...
... – One station transmits a frame to a switch (data link layer operation) – Switch only transmits frame out port of destination PC Switch – No broadcasting out all ports Switch ...
Network
... • POTS network is not designed for other forms of communications, such as wide-band speech, audio, images, video, facsimile and data. • About 30 years ago, a second communications network was created with the goal of providing a better transport mechanism for data networking. The resulting network i ...
... • POTS network is not designed for other forms of communications, such as wide-band speech, audio, images, video, facsimile and data. • About 30 years ago, a second communications network was created with the goal of providing a better transport mechanism for data networking. The resulting network i ...
Type of Networks (Continued)
... − provides a carrier sense signal which indicates if there is a transmission in progress − data sent by one station can be received by all stations in its area of coverage − communication may suffer from the "hidden terminal problem“: walls or other structures obstruct the RF signals station C r ...
... − provides a carrier sense signal which indicates if there is a transmission in progress − data sent by one station can be received by all stations in its area of coverage − communication may suffer from the "hidden terminal problem“: walls or other structures obstruct the RF signals station C r ...
Mobile VoIP_salam_
... voice or video calls. However, it can be used in any application where session initiation is a requirement. These include, Event Subscription and Notification, Terminal mobility and so on. All voice/video communications are done over separate transport protocols, typically RTP. ...
... voice or video calls. However, it can be used in any application where session initiation is a requirement. These include, Event Subscription and Notification, Terminal mobility and so on. All voice/video communications are done over separate transport protocols, typically RTP. ...
LAN and WAN
... vendors. • It permits data to be transmitted at any speed the network handles. ATM can transmit up to 2.5 GBPS. • It can connect LAN and WAN together more easily. ...
... vendors. • It permits data to be transmitted at any speed the network handles. ATM can transmit up to 2.5 GBPS. • It can connect LAN and WAN together more easily. ...
Corporate Overview - Network Instruments
... Rebuild conversations to witness the event unfold just like sports “instant replay” ...
... Rebuild conversations to witness the event unfold just like sports “instant replay” ...
Protocol Stack
... • Standardization is key to network interoperability • Application Layer: Provides services that are frequently required by applications: DNS, web acess, file transfer, email… • Presentation Layer: machineindependent representation of data… • Session Layer: dialog management, recovery from Mostly er ...
... • Standardization is key to network interoperability • Application Layer: Provides services that are frequently required by applications: DNS, web acess, file transfer, email… • Presentation Layer: machineindependent representation of data… • Session Layer: dialog management, recovery from Mostly er ...
error-free
... aggregated traffic with QoS differentiation per-flow-based guaranteed QoS performance, such as delay or jitter bound ...
... aggregated traffic with QoS differentiation per-flow-based guaranteed QoS performance, such as delay or jitter bound ...
Cisco 1 - Network Specialist Program
... The first thing you may notice is that a lot of extra packets were captured by Wireshark; you will likely have many more packets in the Packet List Pane than those generated by your pings. You will need to scroll up and down through the List Pane to find the packets generated by your request. To sim ...
... The first thing you may notice is that a lot of extra packets were captured by Wireshark; you will likely have many more packets in the Packet List Pane than those generated by your pings. You will need to scroll up and down through the List Pane to find the packets generated by your request. To sim ...
Network and Perimeter Security
... VPNs provide a secure option for communicating across a public network VPNS are used in two primary scenarios: Network access for remote clients Network access between sites VPN quarantine control provides an additional level of security by providing the ability to check the configuration of the VPN ...
... VPNs provide a secure option for communicating across a public network VPNS are used in two primary scenarios: Network access for remote clients Network access between sites VPN quarantine control provides an additional level of security by providing the ability to check the configuration of the VPN ...
Distributed Monitoring of Mesh Networks
... essential for evolving network technologies critical last piece in the product conceptiondesign-development-improvement loop ...
... essential for evolving network technologies critical last piece in the product conceptiondesign-development-improvement loop ...
ECE537-Class 1_2009 - Worcester Polytechnic Institute
... timing req. – strict timing, reliability • “smart” end systems (computers) requirements – can adapt, perform control, – need for guaranteed service error recovery • “dumb” end systems – simple inside network, – telephones complexity at “edge” – complexity inside network • many link types – different ...
... timing req. – strict timing, reliability • “smart” end systems (computers) requirements – can adapt, perform control, – need for guaranteed service error recovery • “dumb” end systems – simple inside network, – telephones complexity at “edge” – complexity inside network • many link types – different ...
Service Providers Go Green With Fiber
... Networking, argue that the energy efficiency of specific equipment – however it is measured – should not be the operator’s primary concern. Because the efficiency of a component depends on how the network is set up, predicting its realworld performance is not always possible. Jim Theodoras, director ...
... Networking, argue that the energy efficiency of specific equipment – however it is measured – should not be the operator’s primary concern. Because the efficiency of a component depends on how the network is set up, predicting its realworld performance is not always possible. Jim Theodoras, director ...
Network
... same time (two ways for transmission) - Half duplex: one circuit for transmission , so only one device can use the bus (send or receive) at a time , if two devices sent at the same time collision occurs . ...
... same time (two ways for transmission) - Half duplex: one circuit for transmission , so only one device can use the bus (send or receive) at a time , if two devices sent at the same time collision occurs . ...
No Slide Title
... – Point-to-point, which connects two ATM end systems and can be unidirectional (one-way communication) or bidirectional (two-way communication). – Point-to-multipoint connects a single-source end system (known as the root node) to multiple destination end systems (known as leaves). Such connections ...
... – Point-to-point, which connects two ATM end systems and can be unidirectional (one-way communication) or bidirectional (two-way communication). – Point-to-multipoint connects a single-source end system (known as the root node) to multiple destination end systems (known as leaves). Such connections ...
NET for stjosephs
... The twisted form is used to reduce electrical interference to similar pairs close by The most common application of the twisted pair is the telephone system Twisted pairs can be used for either analog or digital transmission The technology and standards are mature and stable for voice commun ...
... The twisted form is used to reduce electrical interference to similar pairs close by The most common application of the twisted pair is the telephone system Twisted pairs can be used for either analog or digital transmission The technology and standards are mature and stable for voice commun ...
The Internet - The University of Tennessee at Martin
... Each packet contains a header that identifies the sender and recipient, and a payload area that contains the data being sent. All messages sent on a network such as the Internet are broken into small chucks called packets. ...
... Each packet contains a header that identifies the sender and recipient, and a payload area that contains the data being sent. All messages sent on a network such as the Internet are broken into small chucks called packets. ...
Understanding Networks
... Look up the seven types of Network Topologies shown below – Provide the definition and then explain the advantages and disadvantages of each in your own words! DO NOT COPY AND PASTE! YOU WILL NEED TO BE ABLE TO EXPLAIN & IDENTIFY THESE IN YOUR QUIZ ON FRIDAY! ...
... Look up the seven types of Network Topologies shown below – Provide the definition and then explain the advantages and disadvantages of each in your own words! DO NOT COPY AND PASTE! YOU WILL NEED TO BE ABLE TO EXPLAIN & IDENTIFY THESE IN YOUR QUIZ ON FRIDAY! ...
Wake-on-LAN
Wake-on-LAN (WoL) is an Ethernet or Token ring computer networking standard that allows a computer to be turned on or awakened by a network message.The message is usually sent by a program executed on another computer on the same local area network. It is also possible to initiate the message from another network by using subnet directed broadcasts or a WOL gateway service. Equivalent terms include wake on WAN, remote wake-up, power on by LAN, power up by LAN, resume by LAN, resume on LAN and wake up on LAN. In case the computer being awakened is communicating via Wi-Fi, a supplementary standard called Wake on Wireless LAN (WoWLAN) must be employed.The WOL and WoWLAN standards are often supplemented by vendors to provide protocol-transparent on-demand services, for example in the Apple Bonjour wake-on-demand (Sleep Proxy) feature.