Slides - My E-town
... There is an Authentication Header (AH) mode that provides authentication and integrity by supplying a cryptographic hash of the message and its addresses There is an Encapsulated Security Payload (ESP) mode that can provide encryption, authentication, or both In transport mode, IPSec encrypts only t ...
... There is an Authentication Header (AH) mode that provides authentication and integrity by supplying a cryptographic hash of the message and its addresses There is an Encapsulated Security Payload (ESP) mode that can provide encryption, authentication, or both In transport mode, IPSec encrypts only t ...
What are the three basic LAN topologies? 2. What common WAN
... What network model draws a clear distinction between devices that share their resources and devices that do not? ...
... What network model draws a clear distinction between devices that share their resources and devices that do not? ...
Read More - www.indiawrm.org.
... • A computer system specifically designed for a particular function • Combination of computer hardware and software • Hardware optimized for the application requirement • Software may be fixed or programmable ...
... • A computer system specifically designed for a particular function • Combination of computer hardware and software • Hardware optimized for the application requirement • Software may be fixed or programmable ...
UNDERLAYS
and
MIDDLEBOXES
READING:
SECTION
8. COS
461:
Computer
Networks
Spring
2010
(MW
3:00‐4:20
in
COS
105)
... Maintaining the Mapping Table • Create an entry upon seeing a packet – Packet with new (source addr, source port) pair ...
... Maintaining the Mapping Table • Create an entry upon seeing a packet – Packet with new (source addr, source port) pair ...
ppt
... • Advantages: Eliminates source IP spoofing (?) • Disadvantages: Source-based solution, no deployment incentives, everybody has to deploy ...
... • Advantages: Eliminates source IP spoofing (?) • Disadvantages: Source-based solution, no deployment incentives, everybody has to deploy ...
CCENT Review
... When a router receives a frame, it decodes the frame to get to the packet containing the destination IP address. It matches the address of the destination to all of the networks that are contained in the routing table. If the destination network address is in the table, the router encapsulates the p ...
... When a router receives a frame, it decodes the frame to get to the packet containing the destination IP address. It matches the address of the destination to all of the networks that are contained in the routing table. If the destination network address is in the table, the router encapsulates the p ...
Distributed Information System 2010 SUMMARY
... You have a “big picture”: context, overview, “feel” of networking Introduction ...
... You have a “big picture”: context, overview, “feel” of networking Introduction ...
A scalable multithreaded L7-filter design for multi
... are executed to establish a connection buffer based on 5tuple connection information in the packet header. ...
... are executed to establish a connection buffer based on 5tuple connection information in the packet header. ...
Week 1 - cda college
... governing the format and meaning of the packets, or messages that are exchanged by the peer entities within a layer. Entities use protocols to implement their service definitions. They are free to change their protocols at will, provided they do not change the service visible to their users. ...
... governing the format and meaning of the packets, or messages that are exchanged by the peer entities within a layer. Entities use protocols to implement their service definitions. They are free to change their protocols at will, provided they do not change the service visible to their users. ...
Technologies that make the Internet Robust
... Internet backbone – who owns it? who controls it? – can you tell somebody to stop streaming or hogging all the bandwidth? – the cable and phone companies would sure like to! – a large fraction of Internet traffic is Netflix + ...
... Internet backbone – who owns it? who controls it? – can you tell somebody to stop streaming or hogging all the bandwidth? – the cable and phone companies would sure like to! – a large fraction of Internet traffic is Netflix + ...
UNIT 5. Instruction to Computer Networks
... memory and hard disk space than clients • Run Network Operating System that can manage not only data, but also users, groups, security, and applications on the network • Servers often have a more stringent requirement on its performance and reliability ...
... memory and hard disk space than clients • Run Network Operating System that can manage not only data, but also users, groups, security, and applications on the network • Servers often have a more stringent requirement on its performance and reliability ...
IP addresses
... A network switch constructs its switching table by extracting the source MAC address from the received frames. If the entry does not exist the switch will forward the frames to all its ports. Prone to ARP poisoning attacks. Cain and Able ...
... A network switch constructs its switching table by extracting the source MAC address from the received frames. If the entry does not exist the switch will forward the frames to all its ports. Prone to ARP poisoning attacks. Cain and Able ...
prj2-review
... or more existing networks – adds an additional layer of indirection/virtualization – changes properties in one or more areas of underlying network ...
... or more existing networks – adds an additional layer of indirection/virtualization – changes properties in one or more areas of underlying network ...
Data Network Connectivity
... E-mail gateway - translates messages from one type of e-mail system to another. Internet gateway - allows and manages access between LANs and the Internet. LAN gateway - allows segments of a LAN running different protocols, network access methods, or transmission types to communicate with each other ...
... E-mail gateway - translates messages from one type of e-mail system to another. Internet gateway - allows and manages access between LANs and the Internet. LAN gateway - allows segments of a LAN running different protocols, network access methods, or transmission types to communicate with each other ...
Ch. 8 Circuit Switching
... • Definition: A method of transmitting messages through a communication network, in which long messages are subdivided into short packets. The packets are then sent through the network to the destination node. (See Fig. 10-8) ...
... • Definition: A method of transmitting messages through a communication network, in which long messages are subdivided into short packets. The packets are then sent through the network to the destination node. (See Fig. 10-8) ...
Wireless Security - Indiana University of Pennsylvania
... Do not auto-connect to open Wi-Fi networks This will expose you to security risks Computers may access this feature automatically without the user realizing so it is important to make sure this is turned off ...
... Do not auto-connect to open Wi-Fi networks This will expose you to security risks Computers may access this feature automatically without the user realizing so it is important to make sure this is turned off ...
Advanced TCP/IP Planning and Design
... Why: Say that you want a LAN network to have more than 254 hosts; a class C network is not sufficient. You can group two Class C networks using supernets. Benefits: Provide more IP addresses to the LAN segment without using secondary IP addresses on the router interface. (How would this effect the ...
... Why: Say that you want a LAN network to have more than 254 hosts; a class C network is not sufficient. You can group two Class C networks using supernets. Benefits: Provide more IP addresses to the LAN segment without using secondary IP addresses on the router interface. (How would this effect the ...
Midterm 2008
... e) Assuming that framing at the data link layer is achieved by using starting and ending flags with bit stuffing. Assume that the header of the data link frame includes only parity bits where for every seven consecutive bits in the data to be transmitted an even parity bit is appended at the beginni ...
... e) Assuming that framing at the data link layer is achieved by using starting and ending flags with bit stuffing. Assume that the header of the data link frame includes only parity bits where for every seven consecutive bits in the data to be transmitted an even parity bit is appended at the beginni ...
The Transport Layer
... 3. Minimize context switches. 4. Minimize copying. 5. You can buy more bandwidth but not lower delay. 6. Avoiding congestion is better than recovering from it. 7. Avoid timeouts. ...
... 3. Minimize context switches. 4. Minimize copying. 5. You can buy more bandwidth but not lower delay. 6. Avoiding congestion is better than recovering from it. 7. Avoid timeouts. ...
Lecture 21
... At Layer 3 we are dealing with, routing by, etc. IP and IP addresses But within a LAN we are using the local Layer 2/1 technology …for example, ethernet Within an Ethernet LAN, it sends, receives, routes ethernet frames, not IP packets So, when a packet containing an IP address hits an ethernet LAN, ...
... At Layer 3 we are dealing with, routing by, etc. IP and IP addresses But within a LAN we are using the local Layer 2/1 technology …for example, ethernet Within an Ethernet LAN, it sends, receives, routes ethernet frames, not IP packets So, when a packet containing an IP address hits an ethernet LAN, ...
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.