Network security
... Row 1: Block incoming packets from any source to any destination for the finger service (TCP port 79) Row 2: Block incoming packets bound for the TFTP service (UDP port 69) Row 3: Block outgoing packets bound for any machine on network 128.112 ...
... Row 1: Block incoming packets from any source to any destination for the finger service (TCP port 79) Row 2: Block incoming packets bound for the TFTP service (UDP port 69) Row 3: Block outgoing packets bound for any machine on network 128.112 ...
IP Forwarding
... We know that one router, the default router, is connected to the rest of the Internet. But there is some missing information. We do not know if network 130.4.8.0 is directly connected to router R2 or through a point-to-point network (WAN) and another router. We do not know if network140.6.12.64 is c ...
... We know that one router, the default router, is connected to the rest of the Internet. But there is some missing information. We do not know if network 130.4.8.0 is directly connected to router R2 or through a point-to-point network (WAN) and another router. We do not know if network140.6.12.64 is c ...
chapterw3
... Manages the flow of data between parties by segmenting long data streams into smaller data chunks (based on allowed “packet” size for a given transmission medium) ...
... Manages the flow of data between parties by segmenting long data streams into smaller data chunks (based on allowed “packet” size for a given transmission medium) ...
Powerpoint - Eve - Kean University
... different protocol suites. The gateway performs any necessary protocol conversions. " Switch - A multiport device which minimally functions as a bridge, and provides for the ...
... different protocol suites. The gateway performs any necessary protocol conversions. " Switch - A multiport device which minimally functions as a bridge, and provides for the ...
unit3
... • A router uses two threshold values to mark positions in the queue: Tmin and Tmax. The general operation of RED can be described by three rules that determine the disposition of each arriving datagram: – if the queue currently contains fewer than Tmin datagrams, add the new datagram to the queue. – ...
... • A router uses two threshold values to mark positions in the queue: Tmin and Tmax. The general operation of RED can be described by three rules that determine the disposition of each arriving datagram: – if the queue currently contains fewer than Tmin datagrams, add the new datagram to the queue. – ...
ppt - Courses
... A firewall isolates an organization’s internal network from the public Internet - All traffic must pass through firewall - Only authorized traffic, as defined by local security policy, can pass ...
... A firewall isolates an organization’s internal network from the public Internet - All traffic must pass through firewall - Only authorized traffic, as defined by local security policy, can pass ...
Voice over IP
... A peer-to-peer VoIP client developed by KaZaa in 2003 Allowing its users to place voice calls and send text messages to other users ...
... A peer-to-peer VoIP client developed by KaZaa in 2003 Allowing its users to place voice calls and send text messages to other users ...
Lecture 19
... Flow Label: identify datagrams in same “flow.” (concept of“flow” not well defined). Next header: identify upper layer protocol for data ...
... Flow Label: identify datagrams in same “flow.” (concept of“flow” not well defined). Next header: identify upper layer protocol for data ...
Network
... token, continuously circulates in the system (usually a ring structure). A site that wants to transmit information must wait until the token arrives. When the site completes its round of message passing, it retransmits the token. A token-passing scheme is used by the IBM and Apollo systems. Message ...
... token, continuously circulates in the system (usually a ring structure). A site that wants to transmit information must wait until the token arrives. When the site completes its round of message passing, it retransmits the token. A token-passing scheme is used by the IBM and Apollo systems. Message ...
Networks
... Organization (ISO) – Defines seven layers • Describe how applications – Running upon network-aware devices ...
... Organization (ISO) – Defines seven layers • Describe how applications – Running upon network-aware devices ...
September 2014 report
... a) A TCP connection is uni-directional which means that for two way communications, a connection must be established from the user to the server and separately from the server to the user. Each process does however, follow the same three way handshake procedure. The user will issue a TCP segment wit ...
... a) A TCP connection is uni-directional which means that for two way communications, a connection must be established from the user to the server and separately from the server to the user. Each process does however, follow the same three way handshake procedure. The user will issue a TCP segment wit ...
ch-3-FIT-pt2
... corresponding physical network address. — ARP operates at Layer 2 of the OSI model — When any device wishes to send data to another target device over Ethernet, it must first determine the MAC address of that target given its IP address — These IP-to-MAC address mappings are derived from an ARP cach ...
... corresponding physical network address. — ARP operates at Layer 2 of the OSI model — When any device wishes to send data to another target device over Ethernet, it must first determine the MAC address of that target given its IP address — These IP-to-MAC address mappings are derived from an ARP cach ...
Chapter 01_02 - UniMAP Portal
... Internet not originally designed with (much) security in mind original vision: “a group of mutually trusting users attached to a transparent network” Internet protocol designers playing “catch-up” security considerations in all layers! ...
... Internet not originally designed with (much) security in mind original vision: “a group of mutually trusting users attached to a transparent network” Internet protocol designers playing “catch-up” security considerations in all layers! ...
Chapter 39 - Personal Web Pages
... The now-standard TCP packets are sent over the regular Internet to the other end of the tunnel There the multicast packets are extracted Sent on via an MBone network that understands the multicast protocol ...
... The now-standard TCP packets are sent over the regular Internet to the other end of the tunnel There the multicast packets are extracted Sent on via an MBone network that understands the multicast protocol ...
ECEN 689 Special Topics in Data Science for Communications
... • Two example uses: – Network planning: identify potential new customers based on volumes of traffic to or from their IP addresses – Attack detection: detect an anomalous burst of traffic destined to a customer ...
... • Two example uses: – Network planning: identify potential new customers based on volumes of traffic to or from their IP addresses – Attack detection: detect an anomalous burst of traffic destined to a customer ...
4th Edition: Chapter 1 - University of Wisconsin
... OSPF (Open Shortest Path First) “open”: publicly available ...
... OSPF (Open Shortest Path First) “open”: publicly available ...
Slide 1
... The mission of Layer 3 is to transport the packets between the hosts while placing as little burden on the network as possible. Speed over reliability Layer 3 is not concerned with or even aware of the type of data contained inside of a packet. This responsibility is the role of the upper la ...
... The mission of Layer 3 is to transport the packets between the hosts while placing as little burden on the network as possible. Speed over reliability Layer 3 is not concerned with or even aware of the type of data contained inside of a packet. This responsibility is the role of the upper la ...
ppt - School of Engineering and Computer Science
... A protocol is a set of rules that determine how things communicate with each other The software which manages Internet communication follows a suite of protocols called TCP/IP The Internet Protocol (IP) determines the format of the information as it is transferred The Transmission Control Pr ...
... A protocol is a set of rules that determine how things communicate with each other The software which manages Internet communication follows a suite of protocols called TCP/IP The Internet Protocol (IP) determines the format of the information as it is transferred The Transmission Control Pr ...
CiscoS3C5 - YSU Computer Science & Information Systems
... • Easy to modify – can evolve and adapt • Easy to implement – follow standards & allow for variety of configurations ...
... • Easy to modify – can evolve and adapt • Easy to implement – follow standards & allow for variety of configurations ...
Internet protocol suite
The Internet protocol suite is the computer networking model and set of communications protocols used on the Internet and similar computer networks. It is commonly known as TCP/IP, because among many protocols, the Transmission Control Protocol (TCP) and the Internet Protocol (IP) is the accepted and most widely used protocol in Internet. Often also called the Internet model, it was originally also known as the DoD model, because the development of the networking model was funded by DARPA, an agency of the United States Department of Defense.TCP/IP provides end-to-end connectivity specifying how data should be packetized, addressed, transmitted, routed and received at the destination. This functionality is organized into four abstraction layers which are used to sort all related protocols according to the scope of networking involved. From lowest to highest, the layers are the link layer, containing communication technologies for a single network segment (link); the internet layer, connecting hosts across independent networks, thus establishing internetworking; the transport layer handling host-to-host communication; and the application layer, which provides process-to-process application data exchange.The TCP/IP model and related protocol models are maintained by the Internet Engineering Task Force (IETF).