Chapter 4 : TCP/IP and OSI
... TCP/IP Network Access Layer • Exchange of data between systems on a shared network • Utilizes address of host and destination • Can also prioritize transmission • Software at this layer depends on network (e.g. X.25 vs. Ethernet) • Segregation means that no other software needs to be concerned abou ...
... TCP/IP Network Access Layer • Exchange of data between systems on a shared network • Utilizes address of host and destination • Can also prioritize transmission • Software at this layer depends on network (e.g. X.25 vs. Ethernet) • Segregation means that no other software needs to be concerned abou ...
Click to Principals of Networking notes
... A bridge has the intelligence to determine if an incoming frame is to be sent to a different segment, or dropped. This improves traffic flow of data by keeping frames from entering the wrong segment. A bridge has two ports. ...
... A bridge has the intelligence to determine if an incoming frame is to be sent to a different segment, or dropped. This improves traffic flow of data by keeping frames from entering the wrong segment. A bridge has two ports. ...
Windows Internet Connection Sharing
... DNS Proxy resolves names on behalf of local-network clients Auto-dial makes connections automatically ...
... DNS Proxy resolves names on behalf of local-network clients Auto-dial makes connections automatically ...
SM6 Vending Machine Module
... battery to allow time switching between different operating modes (i.e. Cash only or cash and card operation or card only mode). A card eject button operating a solenoid eject soft landing card acceptor with optional shutter and 2 line backlit LCD display allow a simple user interface. The module ca ...
... battery to allow time switching between different operating modes (i.e. Cash only or cash and card operation or card only mode). A card eject button operating a solenoid eject soft landing card acceptor with optional shutter and 2 line backlit LCD display allow a simple user interface. The module ca ...
ppt - CSE Home
... E.g, for cable, take payload, add error protection (ReedSolomon), header and framing, then turn into a signal Modulate data to assigned channel and time (upstream) Downstream, 6 MHz (~30 Mbps), Upstream ~2 MHz (~3 Mbps) ...
... E.g, for cable, take payload, add error protection (ReedSolomon), header and framing, then turn into a signal Modulate data to assigned channel and time (upstream) Downstream, 6 MHz (~30 Mbps), Upstream ~2 MHz (~3 Mbps) ...
Slides - CUNY.edu
... network have same single source NAT IP address: 138.76.29.7, different source port numbers ...
... network have same single source NAT IP address: 138.76.29.7, different source port numbers ...
Computer networks Considerations When Choosing a Topology
... Future growth. With a star topology, expanding a network is easily done by adding another concentrator. Cable type. The most common cable in schools is unshielded twisted pair, which is most often used with star topologies. ...
... Future growth. With a star topology, expanding a network is easily done by adding another concentrator. Cable type. The most common cable in schools is unshielded twisted pair, which is most often used with star topologies. ...
6100 USB/ Ethernet Dual Connect Router
... Westell Limited • Ringway House • Bell Road • Basingstoke RG24 8FB • United Kingdom • Telephone: +44 1256 843311 • Fax: +44 1256 840429 • www.westell.co.uk • Email: [email protected] Westell, Inc. • 750 North Commons Drive • Aurora, IL 60504 • Tel: 630-898-2500 • 1-800-323-6883 • Fax: 630-375- ...
... Westell Limited • Ringway House • Bell Road • Basingstoke RG24 8FB • United Kingdom • Telephone: +44 1256 843311 • Fax: +44 1256 840429 • www.westell.co.uk • Email: [email protected] Westell, Inc. • 750 North Commons Drive • Aurora, IL 60504 • Tel: 630-898-2500 • 1-800-323-6883 • Fax: 630-375- ...
Basic Networking
... • In a peer-to-peer network, every computer can communicate directly with every other computer • A client/server network uses a server to enable clients to share data, data storage space, and devices • A LAN is confined to a relatively small space, such as a building or office ...
... • In a peer-to-peer network, every computer can communicate directly with every other computer • A client/server network uses a server to enable clients to share data, data storage space, and devices • A LAN is confined to a relatively small space, such as a building or office ...
18: VPN, IPV6, NAT, MobileIP
... 3. Server responds to SYN packet with a SYN,ACK packet. The packet is sent to the NAT gateway’s IP address. ...
... 3. Server responds to SYN packet with a SYN,ACK packet. The packet is sent to the NAT gateway’s IP address. ...
Power Point - Toronto Users Group
... • can protect you from others snooping at a Hot Spot • everybody gets their own, unique, per-session encryption key EAP – Extensible Authentication Protocol RADIUS – Remote Authentication Dial-in User Service, RFCs 2865, 2866, and 2869 ...
... • can protect you from others snooping at a Hot Spot • everybody gets their own, unique, per-session encryption key EAP – Extensible Authentication Protocol RADIUS – Remote Authentication Dial-in User Service, RFCs 2865, 2866, and 2869 ...
Network Layer (Part IV) - SI-35-02
... • When a DHCP client boots, it enters an initialize state. It sends DHCPDISCOVER broadcast messages, which are UDP packets with the port number set to the BOOTP port. • After sending the DHCPDISCOVER packets, the client moves into the select state and collects DHCPOFFER responses from ...
... • When a DHCP client boots, it enters an initialize state. It sends DHCPDISCOVER broadcast messages, which are UDP packets with the port number set to the BOOTP port. • After sending the DHCPDISCOVER packets, the client moves into the select state and collects DHCPOFFER responses from ...
Moblie IP
... • Mobile networking should not be confused with portable networking – Portable networking requires connection to same ISP CS 640 ...
... • Mobile networking should not be confused with portable networking – Portable networking requires connection to same ISP CS 640 ...
Optimizing Existing Networks for Data Acquisition
... backbone is a logical choice for transporting data. However, standard, “untuned” networking cannot adequately address the throughput and latency delivery requirements of some network systems. But because these backbones are often coupled with many other data processing functions, adjusting the netwo ...
... backbone is a logical choice for transporting data. However, standard, “untuned” networking cannot adequately address the throughput and latency delivery requirements of some network systems. But because these backbones are often coupled with many other data processing functions, adjusting the netwo ...
layered
... Control Protocol. It allows a user at one site to establish a virtual circuit connection to a remote system Using Telnet, a user at one host can login to another host, appearing like directly attached. ...
... Control Protocol. It allows a user at one site to establish a virtual circuit connection to a remote system Using Telnet, a user at one host can login to another host, appearing like directly attached. ...
IP Version 6
... • Institutes a de-facto network layer connection-oriented service • NAT box is a single point of failure for all TCP connections it handles • Violates layering • TCP and UDP aren't the only things out there. No other transport layer protocols work over NAT • Application layer use transmission of IP ...
... • Institutes a de-facto network layer connection-oriented service • NAT box is a single point of failure for all TCP connections it handles • Violates layering • TCP and UDP aren't the only things out there. No other transport layer protocols work over NAT • Application layer use transmission of IP ...
Lecture #3: IEEE 802.11 Wireless Standard
... Provide a link between networks Provide for the routing and delivery of data between processes on end systems attached to different networks Provide these functions in such a way as not to require modifications of the networking architecture of any of the attached subnetworks ...
... Provide a link between networks Provide for the routing and delivery of data between processes on end systems attached to different networks Provide these functions in such a way as not to require modifications of the networking architecture of any of the attached subnetworks ...
Lecture 2 - Adresses and subnet masks
... • A 0 in the subnet mask means that the corresponding bit in the address belongs to the host-ID, and a 1 that it belongs to the Net ID or subnet ID. • Example: Subnet mask 255.255.0.0 = FFFF0000 (sixteen ones and sixteen zeros) means that the first 16 bits in the i IP-adressen are Net-ID or subnet I ...
... • A 0 in the subnet mask means that the corresponding bit in the address belongs to the host-ID, and a 1 that it belongs to the Net ID or subnet ID. • Example: Subnet mask 255.255.0.0 = FFFF0000 (sixteen ones and sixteen zeros) means that the first 16 bits in the i IP-adressen are Net-ID or subnet I ...
CopySense® Appliance Case Study
... legal use of the Internet. After reading our messages, they understand why their network access is being blocked and how to move forward to unblock it. As an academic institution, it makes perfect sense that we should help our students learn about the copyrights and intellectual property rights of o ...
... legal use of the Internet. After reading our messages, they understand why their network access is being blocked and how to move forward to unblock it. As an academic institution, it makes perfect sense that we should help our students learn about the copyrights and intellectual property rights of o ...
MAC Part I - UCLA Computer Science
... collisions are detected within a few bit times. Transmission is then aborted, reducing the channel wastage considerably. Typically, persistent transmission is implemented CSMA/CD can approach channel utilization =1 in LANs (low ratio of propagation over packet transmission time) Collision detection ...
... collisions are detected within a few bit times. Transmission is then aborted, reducing the channel wastage considerably. Typically, persistent transmission is implemented CSMA/CD can approach channel utilization =1 in LANs (low ratio of propagation over packet transmission time) Collision detection ...
Gateway
... Used to create connections between stations in a physical star topology. Does not have a filtering capability; Does not have the intelligence to find from which port the frame should be sent out. It regenerates the corrupted signals and ...
... Used to create connections between stations in a physical star topology. Does not have a filtering capability; Does not have the intelligence to find from which port the frame should be sent out. It regenerates the corrupted signals and ...
ARQ Modeling (1)
... occur with small but non zero probability, example: Bit error probability in the order of 10-6 for systems using copper wires Bit error probability in the order of 10-9 for modern optical fiber systems High bit error probability in the order of 10-3 for wireless transmission systems ...
... occur with small but non zero probability, example: Bit error probability in the order of 10-6 for systems using copper wires Bit error probability in the order of 10-9 for modern optical fiber systems High bit error probability in the order of 10-3 for wireless transmission systems ...
COS 420 day 18
... Possibly change TCP or UDP source ports Recompute TCP or UDP checksums Translate ICMP messages Translate port numbers in an FTP session ...
... Possibly change TCP or UDP source ports Recompute TCP or UDP checksums Translate ICMP messages Translate port numbers in an FTP session ...
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.