
Securing IT Assets with Linux
... - Up-to-date security vulnerability database. We mostly focus on the development of security checks for recent security holes. Our security checks database is updated on a daily basis. - Client-server architecture. The Nessus Security Scanner is made up of two parts : a server, which performs the at ...
... - Up-to-date security vulnerability database. We mostly focus on the development of security checks for recent security holes. Our security checks database is updated on a daily basis. - Client-server architecture. The Nessus Security Scanner is made up of two parts : a server, which performs the at ...
New Directions in Traffic Measurement and Accounting
... pair traffic in backbones (Fang-Peterson). • Can we directly track flows that send say over 1% of link bandwidth without keeping track of all flows? ...
... pair traffic in backbones (Fang-Peterson). • Can we directly track flows that send say over 1% of link bandwidth without keeping track of all flows? ...
presentation source
... – last review was growing (factor of 16 in 9 months) up to 40 spam actions/week – now stable ~ 10 actions/week – ~ 2100 sites blocked (was 90 two years ago) – prepared to restore domain upon user request ...
... – last review was growing (factor of 16 in 9 months) up to 40 spam actions/week – now stable ~ 10 actions/week – ~ 2100 sites blocked (was 90 two years ago) – prepared to restore domain upon user request ...
- EdShare
... When the internet is used for the purposes of sending an email, using a browser, or a variety of other different tasks different protocols are used to transfer the data. There are commonly know as application layer protocols. These protocols include the following: HTTP (Hypertext Transfer Protocol): ...
... When the internet is used for the purposes of sending an email, using a browser, or a variety of other different tasks different protocols are used to transfer the data. There are commonly know as application layer protocols. These protocols include the following: HTTP (Hypertext Transfer Protocol): ...
3.1 Introduction to ARP
... • Reverse ARP (RARP) can be used to determine a link’s internet address for hosts without a large secondary storage (e.g. certain clients in sensor network). Hardware address is normally available in the ROM of network card. • A host states its link’s physical address in a broadcasted RARP, and asks ...
... • Reverse ARP (RARP) can be used to determine a link’s internet address for hosts without a large secondary storage (e.g. certain clients in sensor network). Hardware address is normally available in the ROM of network card. • A host states its link’s physical address in a broadcasted RARP, and asks ...
Slide 1
... – Sometimes referred to as the Packet Length. – Defines the entire packet (fragment) size, including header and data, in bytes. – The minimum length packet is 20 bytes (20-byte header + 0 bytes data) and the maximum is 65,535 bytes. . ...
... – Sometimes referred to as the Packet Length. – Defines the entire packet (fragment) size, including header and data, in bytes. – The minimum length packet is 20 bytes (20-byte header + 0 bytes data) and the maximum is 65,535 bytes. . ...
1 slide per page
... Internet session management can be: Reliable — with transport service Unreliable — without transport service ...
... Internet session management can be: Reliable — with transport service Unreliable — without transport service ...
Lecture 20: Transport layer
... – When two hosts are connected by a link, packets will not reorder or duplicate (if the sender sends only once). In addition, packets will either get to the receiver or get lost. – When two hosts are connected by a network, packets can be duplicated, delayed, lost, reordered. – Implication: The prob ...
... – When two hosts are connected by a link, packets will not reorder or duplicate (if the sender sends only once). In addition, packets will either get to the receiver or get lost. – When two hosts are connected by a network, packets can be duplicated, delayed, lost, reordered. – Implication: The prob ...
pptx
... datagram network (Internet) provides networklayer connectionless service virtual-circuit network (ATM) provides networklayer connection service analogous to TCP/UDP connecton-oriented / connectionless transport-layer services, but: service: host-to-host no choice: network provides one or the oth ...
... datagram network (Internet) provides networklayer connectionless service virtual-circuit network (ATM) provides networklayer connection service analogous to TCP/UDP connecton-oriented / connectionless transport-layer services, but: service: host-to-host no choice: network provides one or the oth ...
quality of service - Victor Tikhonov website
... that reflects or predicts the subjectively experienced quality. In this context, QoS is the acceptable cumulative effect on subscriber satisfaction of all imperfections affecting the service. Other terms with similar meaning are the quality of experience (QoE) subjective business concept, the requir ...
... that reflects or predicts the subjectively experienced quality. In this context, QoS is the acceptable cumulative effect on subscriber satisfaction of all imperfections affecting the service. Other terms with similar meaning are the quality of experience (QoE) subjective business concept, the requir ...
Networks * The Big Picture
... Switching Schemes Using the cut-through it takes only 7 time units for node 4 to receive the entire message The same message took 16 time units in the store-and-forward scheme ...
... Switching Schemes Using the cut-through it takes only 7 time units for node 4 to receive the entire message The same message took 16 time units in the store-and-forward scheme ...
Chapter 1
... • An individual network usually spans a single geographical area, providing services and applications to people within a common organizational structure, such as a single business, campus or region. ...
... • An individual network usually spans a single geographical area, providing services and applications to people within a common organizational structure, such as a single business, campus or region. ...
Chapter 14 Outline
... (1) Hotfix: This is a term given to a (usually) small software update designed to address a specific problem. Hotfixes are typically developed in reaction to a discovered problem and are produced and then released rather quickly. (2) Patch: This term is usually applied to a more formal, larger softw ...
... (1) Hotfix: This is a term given to a (usually) small software update designed to address a specific problem. Hotfixes are typically developed in reaction to a discovered problem and are produced and then released rather quickly. (2) Patch: This term is usually applied to a more formal, larger softw ...
PPT
... • Link management: The link control protocol (LCP) is responsible for establishing, configuring, and negotiating a data-link connection. LCP also monitors the link quality and is used to terminate the link. • Authentication: Authentication is optional. PPP supports two authentication protocols: Pass ...
... • Link management: The link control protocol (LCP) is responsible for establishing, configuring, and negotiating a data-link connection. LCP also monitors the link quality and is used to terminate the link. • Authentication: Authentication is optional. PPP supports two authentication protocols: Pass ...
Transport Layer Issue in Wireless Ad Hoc and Sensor Networking
... References [1] K. Chandran, S. Raghunathan, S. Venkatesan, and R. Prakash, “A Feedback based scheme for improving TCP performance in ad hoc wireless networks,” in ...
... References [1] K. Chandran, S. Raghunathan, S. Venkatesan, and R. Prakash, “A Feedback based scheme for improving TCP performance in ad hoc wireless networks,” in ...
Introduction - Communications
... • Link management: The link control protocol (LCP) is responsible for establishing, configuring, and negotiating a data-link connection. LCP also monitors the link quality and is used to terminate the link. • Authentication: Authentication is optional. PPP supports two authentication protocols: Pass ...
... • Link management: The link control protocol (LCP) is responsible for establishing, configuring, and negotiating a data-link connection. LCP also monitors the link quality and is used to terminate the link. • Authentication: Authentication is optional. PPP supports two authentication protocols: Pass ...
Performance and Introduction to Queue theory
... Packet length, P, is the length of a packet in bits. Link length, L, is the length of a link in meters. Data rate, R, is the rate at which bits can be sent, in bits/second, or b/s.1 Propagation delay, PROP, is the time for one bit to travel along a link of length, L. PROP = L/c. Transmission time, T ...
... Packet length, P, is the length of a packet in bits. Link length, L, is the length of a link in meters. Data rate, R, is the rate at which bits can be sent, in bits/second, or b/s.1 Propagation delay, PROP, is the time for one bit to travel along a link of length, L. PROP = L/c. Transmission time, T ...
Role of Ethernet in Optical Networks
... This presentation contains forward-looking statements that involve substantial risks and uncertainties, including but not limited to, statements relating to goals, plans, objectives and future events. All statements, other than statements of historical facts, included in this presentation regarding ...
... This presentation contains forward-looking statements that involve substantial risks and uncertainties, including but not limited to, statements relating to goals, plans, objectives and future events. All statements, other than statements of historical facts, included in this presentation regarding ...
IP Addresses - Dr. Wissam Fawaz
... Routers use a default mask To define size of the network and host parts of address ...
... Routers use a default mask To define size of the network and host parts of address ...
Basic Networking - Villanova University
... corresponding bits in an IP address contain network information • Bits in a subnet mask that equal 0 indicate that corresponding bits in an IP address contain host information • CIDR allows the creation of supernets, or subnets established by using bits that normally would be reserved for network cl ...
... corresponding bits in an IP address contain network information • Bits in a subnet mask that equal 0 indicate that corresponding bits in an IP address contain host information • CIDR allows the creation of supernets, or subnets established by using bits that normally would be reserved for network cl ...
Multimedia, QoS and Multicast
... • RTSP is an application-level protocol designed to work with RTP (and RSVP) to provide a complete streaming service over ...
... • RTSP is an application-level protocol designed to work with RTP (and RSVP) to provide a complete streaming service over ...
Important Concepts.
... Spyware is software that aids in gathering information about a person or organization without their knowledge. ...
... Spyware is software that aids in gathering information about a person or organization without their knowledge. ...
Difficulties in Simulating the Internet
... tervention to maintain critical network properties such as stability becomes a recipe for disaster. A third key property is that the Internet changes in drastic ways over time. For example, we mentioned above that in Dec. 2000, the network included 100 million computers. But in Jan. 1997, four years ...
... tervention to maintain critical network properties such as stability becomes a recipe for disaster. A third key property is that the Internet changes in drastic ways over time. For example, we mentioned above that in Dec. 2000, the network included 100 million computers. But in Jan. 1997, four years ...
Mobile VPNs For Next Generation GPRS And UMTS Networks
... Voluntary tunneling carries a number of other drawbacks as well. For example, it requires that mobile nodes be given public addresses allowing end-to-end transparent IP connectivity. In addition, it requires complex encryption and decryption algorithms, which can increase the complexity and cost of ...
... Voluntary tunneling carries a number of other drawbacks as well. For example, it requires that mobile nodes be given public addresses allowing end-to-end transparent IP connectivity. In addition, it requires complex encryption and decryption algorithms, which can increase the complexity and cost of ...