OSPF - Computing Sciences
... • Flat routing protocol is when all routing information is spread through the entire network. • Hierarchical routing protocol are typically classless link-state protocols. This means that classless means that routing updates include subnet masks in their routing updates. • Administrative distance is ...
... • Flat routing protocol is when all routing information is spread through the entire network. • Hierarchical routing protocol are typically classless link-state protocols. This means that classless means that routing updates include subnet masks in their routing updates. • Administrative distance is ...
SOHO Firewalls using Shorewall
... • A kernel that supports netfilter. I've tested with 2.4.2 2.4.20. 2.4.20 required for full functionality. • iptables 1.2 or later but beware version 1.2.3. Version 1.2.7a required for full functionality. • iproute ("ip" utility). The iproute package is included with most distributions but may not b ...
... • A kernel that supports netfilter. I've tested with 2.4.2 2.4.20. 2.4.20 required for full functionality. • iptables 1.2 or later but beware version 1.2.3. Version 1.2.7a required for full functionality. • iproute ("ip" utility). The iproute package is included with most distributions but may not b ...
OSPF - Computing Sciences
... • Flat routing protocol is when all routing information is spread through the entire network. • Hierarchical routing protocol are typically classless link-state protocols. This means that classless means that routing updates include subnet masks in their routing updates. • Administrative distance is ...
... • Flat routing protocol is when all routing information is spread through the entire network. • Hierarchical routing protocol are typically classless link-state protocols. This means that classless means that routing updates include subnet masks in their routing updates. • Administrative distance is ...
Addressing, Internetworking
... • BOOTP: user sends the request for its IP address to the designated router, which forwards the request to the network. Administrator has to assign IP for each MAC address manually. ...
... • BOOTP: user sends the request for its IP address to the designated router, which forwards the request to the network. Administrator has to assign IP for each MAC address manually. ...
Chapter 2 Lecture Presentation
... Browser software uses HyperText Transfer Protocol (HTTP) to send request for document HTTP server waits for requests by listening to a well-known port number (80 for HTTP) HTTP client sends request messages through an “ephemeral port number,” e.g. 1127 HTTP needs a Transmission Control Protocol (TCP ...
... Browser software uses HyperText Transfer Protocol (HTTP) to send request for document HTTP server waits for requests by listening to a well-known port number (80 for HTTP) HTTP client sends request messages through an “ephemeral port number,” e.g. 1127 HTTP needs a Transmission Control Protocol (TCP ...
PPT
... (more) • Alternative to Marking and Policing: allocate a set portion of bandwidth to each application flow; can lead to inefficient use of bandwidth if one of the flows does not use its allocation • PRINCIPLE 3: While providing isolation, it is desirable to use resources as efficiently as ...
... (more) • Alternative to Marking and Policing: allocate a set portion of bandwidth to each application flow; can lead to inefficient use of bandwidth if one of the flows does not use its allocation • PRINCIPLE 3: While providing isolation, it is desirable to use resources as efficiently as ...
Protocol - clear - Rice University
... • Layering is a particular form of modularization • The system is broken into a vertical hierarchy of logically distinct entities (layers) • The service provided by one layer is based solely on the service provided by layer below • Rigid structure: easy reuse, performance suffers ...
... • Layering is a particular form of modularization • The system is broken into a vertical hierarchy of logically distinct entities (layers) • The service provided by one layer is based solely on the service provided by layer below • Rigid structure: easy reuse, performance suffers ...
pdf
... IP Multicast in Data Centers • Useful, but rarely used. • Various problems: – Security – Stability – Scalability ...
... IP Multicast in Data Centers • Useful, but rarely used. • Various problems: – Security – Stability – Scalability ...
computer networks sample question bank
... Ans: Token ring protocol is applicable in a single ring. Disadvantage of this protocol is that, if one segment of wires fails or a node fails, the protocol cannot work. To increase reliability, dual counter ring topology used in FDDI protocol, where there are two rings, called primary ring and secon ...
... Ans: Token ring protocol is applicable in a single ring. Disadvantage of this protocol is that, if one segment of wires fails or a node fails, the protocol cannot work. To increase reliability, dual counter ring topology used in FDDI protocol, where there are two rings, called primary ring and secon ...
PPT
... • Each protocol layer needs to provide some hooks to upper layer protocols • Demultiplexing: identify which upper layer protocol packet belongs to • E.g., port numbers allow TCP/UDP to identify target application • Ethernet uses Type field ...
... • Each protocol layer needs to provide some hooks to upper layer protocols • Demultiplexing: identify which upper layer protocol packet belongs to • E.g., port numbers allow TCP/UDP to identify target application • Ethernet uses Type field ...
FIREWALLS
... 3. The firewall itself is immune to penetration. This implies the use of a hardened system with a secured operating system. Trusted computer systems are suitable for hosting a firewall and often required in government applications. [SMIT97] lists four general techniques that firewalls use to control ...
... 3. The firewall itself is immune to penetration. This implies the use of a hardened system with a secured operating system. Trusted computer systems are suitable for hosting a firewall and often required in government applications. [SMIT97] lists four general techniques that firewalls use to control ...
Slide 1
... Managed - Station acts as a normal client Repeater Mesh Ad-hoc Monitor mode (also called Radio Frequency Monitor or RFMON) ...
... Managed - Station acts as a normal client Repeater Mesh Ad-hoc Monitor mode (also called Radio Frequency Monitor or RFMON) ...
20.4 Universal Service in a Heterogeneous World
... A large organization with diverse networking requirements needs multiple physical networks If the organization chooses the type of network that is best for each task, the organization will have several types of networks ...
... A large organization with diverse networking requirements needs multiple physical networks If the organization chooses the type of network that is best for each task, the organization will have several types of networks ...
Networking for the New Enterprise Data Center
... nontrivial problem, which is addressed in some cases by expensive, proprietary hardware and software. In this manner, data center resources are fragmented, and limitations on the network infrastructure (such as IP address hierarchies) make it difficult to dynamically reassign servers and application ...
... nontrivial problem, which is addressed in some cases by expensive, proprietary hardware and software. In this manner, data center resources are fragmented, and limitations on the network infrastructure (such as IP address hierarchies) make it difficult to dynamically reassign servers and application ...
3rd Edition: Chapter 4
... outgoing datagrams: replace (source IP address, port #) of every outgoing datagram to (NAT IP address, new port #) . . . remote clients/servers will respond using (NAT IP address, new port #) as destination addr. remember (in NAT translation table) every (source IP address, port #) to (NAT IP addres ...
... outgoing datagrams: replace (source IP address, port #) of every outgoing datagram to (NAT IP address, new port #) . . . remote clients/servers will respond using (NAT IP address, new port #) as destination addr. remember (in NAT translation table) every (source IP address, port #) to (NAT IP addres ...
Linux+ Guide to Linux Certification
... fiber-optic, wireless communication – Data Link layer: TCP compatible with IEEE 802.2 LLC and MAC addressing – Network layer: TCP/IP equivalent is IP – Transport layer: both TCP and UDP operate here – Upper layers of OSI correspond to TCP/IP ...
... fiber-optic, wireless communication – Data Link layer: TCP compatible with IEEE 802.2 LLC and MAC addressing – Network layer: TCP/IP equivalent is IP – Transport layer: both TCP and UDP operate here – Upper layers of OSI correspond to TCP/IP ...
Document
... determined by the node's address, e.g., based on the loworder bits of the node's address. The channel a receiver receives from is referred to as that node's home channel. (FR) Two slotted-ALOHA protocols were proposed in [Dowd9l], and both were shown to out-perform the control-channelbased slotted-A ...
... determined by the node's address, e.g., based on the loworder bits of the node's address. The channel a receiver receives from is referred to as that node's home channel. (FR) Two slotted-ALOHA protocols were proposed in [Dowd9l], and both were shown to out-perform the control-channelbased slotted-A ...
InfiniBand - FSU Computer Science
... destination and Infiniband only uses destination – Potential solution: » find all possible paths » remove all possible down link following up links in each node » find one output port for each destination – Other solutions: destination renaming ...
... destination and Infiniband only uses destination – Potential solution: » find all possible paths » remove all possible down link following up links in each node » find one output port for each destination – Other solutions: destination renaming ...
Document
... Multiplexing multiple telecommunications connections over the same physical conductor has been possible for a long time, but nonetheless each channel on the multiplexed link was either dedicated to one call at a time, or it was idle between calls. ...
... Multiplexing multiple telecommunications connections over the same physical conductor has been possible for a long time, but nonetheless each channel on the multiplexed link was either dedicated to one call at a time, or it was idle between calls. ...
Chapter 24 - William Stallings, Data and Computer Communications
... to perform their migrations and their navigational and homing feats. Accumulated research shows that in addition to performing the difficult tasks of correcting for displacement (by storms, winds, mountains, and other hindrances), birds integrate an astonishing variety of celestial, atmospheric, and ...
... to perform their migrations and their navigational and homing feats. Accumulated research shows that in addition to performing the difficult tasks of correcting for displacement (by storms, winds, mountains, and other hindrances), birds integrate an astonishing variety of celestial, atmospheric, and ...
CSC 335 Data Communications and Networking I
... • OSI transport services include a more complete set of services • TCP is not identical to OSI transport protocol in terms of the PDU format, and even some terms. For example, TCP calls its PDU a segment; OSI calls its PDU a TPDU; TCP identifies its application using a port number, OSI uses a Transp ...
... • OSI transport services include a more complete set of services • TCP is not identical to OSI transport protocol in terms of the PDU format, and even some terms. For example, TCP calls its PDU a segment; OSI calls its PDU a TPDU; TCP identifies its application using a port number, OSI uses a Transp ...
(Seven Layers of Open Systems Interconnection (OSI
... Another function of the transport layer is TCP segment sequencing. Sequencing is a connectionoriented service that takes TCP segments that are received out of order and place them in the right order. The transport layer also enables the option of specifying a "service address" for the services or ap ...
... Another function of the transport layer is TCP segment sequencing. Sequencing is a connectionoriented service that takes TCP segments that are received out of order and place them in the right order. The transport layer also enables the option of specifying a "service address" for the services or ap ...
DNS - Department of Computer Science
... Internet routers need only to know how to reach ISPs Given an IP packet, routers determine the block it belongs to and send the packet to the ISP who are responsible for this ...
... Internet routers need only to know how to reach ISPs Given an IP packet, routers determine the block it belongs to and send the packet to the ISP who are responsible for this ...
Memory Requirements
... These small Hello packets continue to be exchanged between two adjacent neighbors which serve as a "keepalive" function to monitor the state of the neighbor. If a router stops receiving Hello packets from a neighbor, that neighbor is considered unreachable and the adjacency is broken. In the figure, ...
... These small Hello packets continue to be exchanged between two adjacent neighbors which serve as a "keepalive" function to monitor the state of the neighbor. If a router stops receiving Hello packets from a neighbor, that neighbor is considered unreachable and the adjacency is broken. In the figure, ...
Inferring Undesirable Behavior from P2P Traffic Analysis
... One of the first works to systematically study P2P traffic to identify undesirable behavior. Shown various types of undesirable behavior of P2P systems in the wild: ...
... One of the first works to systematically study P2P traffic to identify undesirable behavior. Shown various types of undesirable behavior of P2P systems in the wild: ...