Network Security
... the firewall setup Firewall ensures that the internal network and the Internet can both talk to the DMZ, but usually not to each other The DMZ relays services at the application level, e.g. mail forwarding, web proxying The DMZ machines and firewall are centrally administered by people focused on s ...
... the firewall setup Firewall ensures that the internal network and the Internet can both talk to the DMZ, but usually not to each other The DMZ relays services at the application level, e.g. mail forwarding, web proxying The DMZ machines and firewall are centrally administered by people focused on s ...
How Network Address Translation Works
... A computer on the stub domain attempts to connect to a computer outside the network, such as a Web server. The router receives the packet from the computer on the stub domain. The router saves the computer's non-routable IP address and port number to an address translation table. The router replaces ...
... A computer on the stub domain attempts to connect to a computer outside the network, such as a Web server. The router receives the packet from the computer on the stub domain. The router saves the computer's non-routable IP address and port number to an address translation table. The router replaces ...
MULTI-PROTOCOL LABEL SWITCHING
... MPLS was originally proposed by a group of engineers from Ipsilon Networks, but their "IP Switching" technology, which was defined only to work over ATM, did not achieve market dominance. Cisco Systems, Inc. introduced a related proposal, not restricted to ATM transmission, called "Tag Switching" wh ...
... MPLS was originally proposed by a group of engineers from Ipsilon Networks, but their "IP Switching" technology, which was defined only to work over ATM, did not achieve market dominance. Cisco Systems, Inc. introduced a related proposal, not restricted to ATM transmission, called "Tag Switching" wh ...
Document
... Most LANs connect workstations and personal computers. Each node (individual computer) in a LAN has its own CPU with which it executes programs, but it is also able to access data and devices anywhere on the LAN. This means that many users can share expensive devices, such as laser printers, as well ...
... Most LANs connect workstations and personal computers. Each node (individual computer) in a LAN has its own CPU with which it executes programs, but it is also able to access data and devices anywhere on the LAN. This means that many users can share expensive devices, such as laser printers, as well ...
1.01 - BRAUDE
... application layers of other end users. For example: translation between ASCII and EBCDIC machines as well as ...
... application layers of other end users. For example: translation between ASCII and EBCDIC machines as well as ...
Hierarchical Path Metric in Multi-Hop Wireless Networks
... its organization, sub-group, etc. Then the routing decision in such networks should take into account the “level constraint” such that cross-organization traffic flow will remain at the lowest possible level. For this purpose, we also propose a metric to measure the “organizational distance” betwee ...
... its organization, sub-group, etc. Then the routing decision in such networks should take into account the “level constraint” such that cross-organization traffic flow will remain at the lowest possible level. For this purpose, we also propose a metric to measure the “organizational distance” betwee ...
Slide 1
... Address class is no longer uniquely identifiable from the address We must find a way of telling routers the size of the network part of the address Done by including a number along with the network address E.g. 73.5.0.0/ 17 ...
... Address class is no longer uniquely identifiable from the address We must find a way of telling routers the size of the network part of the address Done by including a number along with the network address E.g. 73.5.0.0/ 17 ...
PPT - WordPress.com
... Allows simple maintenance and remote monitoring of any device on a network. With SNMP, administrators can address issues such as problems with a network card in a server, a program, or service on the server, or a device such as a hub or a router. When managing a network device using SNMP, an adminis ...
... Allows simple maintenance and remote monitoring of any device on a network. With SNMP, administrators can address issues such as problems with a network card in a server, a program, or service on the server, or a device such as a hub or a router. When managing a network device using SNMP, an adminis ...
Routing
... Nodes flood their state onto the link to all other nodes At start, new nodes downlink the database from a neighbour Different kinds of link ...
... Nodes flood their state onto the link to all other nodes At start, new nodes downlink the database from a neighbour Different kinds of link ...
Data Link Layer
... Ethernet and IEEE 802.3: Any Difference? • On a conceptual level, they are identical. But there are subtle differences that are relevant if we deal with TCP/IP. • “Ethernet”: • An industry standard from 1982 that is based on the first implementation of CSMA/CD by Xerox. • Predominant version of CSM ...
... Ethernet and IEEE 802.3: Any Difference? • On a conceptual level, they are identical. But there are subtle differences that are relevant if we deal with TCP/IP. • “Ethernet”: • An industry standard from 1982 that is based on the first implementation of CSMA/CD by Xerox. • Predominant version of CSM ...
PPT - mrazian.com
... store, forward Ethernet frames examine incoming frame’s MAC address, selectively forward frame to one-or-more outgoing links when frame is to be forwarded on segment, uses CSMA/CD to access segment transparent hosts are unaware of presence of switches plug-and-play, self-learning switches do ...
... store, forward Ethernet frames examine incoming frame’s MAC address, selectively forward frame to one-or-more outgoing links when frame is to be forwarded on segment, uses CSMA/CD to access segment transparent hosts are unaware of presence of switches plug-and-play, self-learning switches do ...
Eltek strategy
... Set according to your network rules. NEVER choose one at random Network Mask: Set according to your network rules. NEVER EVER choose one at random. GateWay: In a closed private network, leave at zeroes. DNS: In a closed private network, leave at zeroes. Baudrate: For Webpower, this shall always be 1 ...
... Set according to your network rules. NEVER choose one at random Network Mask: Set according to your network rules. NEVER EVER choose one at random. GateWay: In a closed private network, leave at zeroes. DNS: In a closed private network, leave at zeroes. Baudrate: For Webpower, this shall always be 1 ...
of the packet
... • One of the major roles of the Network layer - provide a mechanism for addressing hosts – As the number of hosts on the network grows, more planning is required to manage and address the network. – Rather than having all hosts everywhere connected to one vast global network, it is more practical an ...
... • One of the major roles of the Network layer - provide a mechanism for addressing hosts – As the number of hosts on the network grows, more planning is required to manage and address the network. – Rather than having all hosts everywhere connected to one vast global network, it is more practical an ...
Network Measurements
... • Choosing an ISP, setting a realistic service level agreement, and verifying it is being met • Choosing routes when more than one is available • Setting expectations: – Deciding which links need upgrading – Deciding where to place collaboration components such as a regional computing center, softwa ...
... • Choosing an ISP, setting a realistic service level agreement, and verifying it is being met • Choosing routes when more than one is available • Setting expectations: – Deciding which links need upgrading – Deciding where to place collaboration components such as a regional computing center, softwa ...
ch22 part 3
... LSP can carry a large amount of information such as : the node identity, list of links, sequence number,…etc. LSP are generated on two occasions: ...
... LSP can carry a large amount of information such as : the node identity, list of links, sequence number,…etc. LSP are generated on two occasions: ...
document
... – Circuit switching: involves creating a dedicated physical circuit between the sending and receiving nodes – Message switching: uses store-and-forward method to transmit data from sending to receiving node – Packet switching: establishes a dedicated logical circuit between the two transmitting node ...
... – Circuit switching: involves creating a dedicated physical circuit between the sending and receiving nodes – Message switching: uses store-and-forward method to transmit data from sending to receiving node – Packet switching: establishes a dedicated logical circuit between the two transmitting node ...
Document
... The Data Link layer specifies how devices attached to the network can gain access to network resources The Institute of Electrical and Electronic Engineers (IEEE) modified the OSI reference model by breaking the data link layer into two ...
... The Data Link layer specifies how devices attached to the network can gain access to network resources The Institute of Electrical and Electronic Engineers (IEEE) modified the OSI reference model by breaking the data link layer into two ...
EEE449 Computer Networks
... Router - An IS used to connect two networks that may or may not be similar. The router employs an internet protocol present in each router and each end system of the network. The router operates at layer 3 of the OSI model. ...
... Router - An IS used to connect two networks that may or may not be similar. The router employs an internet protocol present in each router and each end system of the network. The router operates at layer 3 of the OSI model. ...
An Introduction to Computer Networks
... •HLen = Hardware Address Length •PLen = Protocol Address Length Univ. of Tehran ...
... •HLen = Hardware Address Length •PLen = Protocol Address Length Univ. of Tehran ...
1 Refer to the exhibit. What two statements are true based on the
... Refer to exhibit. A company network engineer enters the following commands in the routers: R1(config)# ip route 10.1.1.0 255.255.255.0 192.168.0.2 R2(config)# ip route 10.1.2.0 255.255.255.0 192.168.0.1 When the engineer enters the show ip route command on R1, the routing table does not display the ...
... Refer to exhibit. A company network engineer enters the following commands in the routers: R1(config)# ip route 10.1.1.0 255.255.255.0 192.168.0.2 R2(config)# ip route 10.1.2.0 255.255.255.0 192.168.0.1 When the engineer enters the show ip route command on R1, the routing table does not display the ...
DNS & ARP
... 2. In CSMA/CD network there are two computers A and B which collide in round 1. Give the table of possible outcomes of the second round and their probabilities. Assume that the initial delay period after the collision is D=1 (the hosts pick a random number between 0 and D before trying to re-transmi ...
... 2. In CSMA/CD network there are two computers A and B which collide in round 1. Give the table of possible outcomes of the second round and their probabilities. Assume that the initial delay period after the collision is D=1 (the hosts pick a random number between 0 and D before trying to re-transmi ...
DNS and ARP
... 2. In CSMA/CD network there are two computers A and B which collide in round 1. Give the table of possible outcomes of the second round and their probabilities. Assume that the initial delay period after the collision is D=1 (the hosts pick a random number between 0 and D before trying to re-transmi ...
... 2. In CSMA/CD network there are two computers A and B which collide in round 1. Give the table of possible outcomes of the second round and their probabilities. Assume that the initial delay period after the collision is D=1 (the hosts pick a random number between 0 and D before trying to re-transmi ...