Defense in Depth / Firewalls Presentation
... by firewall. Locate webservers and other services there that generate potentially unsafe traffic. ...
... by firewall. Locate webservers and other services there that generate potentially unsafe traffic. ...
ppt
... Link-state advertisements only in area each nodes has detailed area topology; only know direction (shortest path) to nets in other areas. ...
... Link-state advertisements only in area each nodes has detailed area topology; only know direction (shortest path) to nets in other areas. ...
IP - Florida State University
... • The NAT box will convert the internal IP address to the real IP address of the company, and pass the packet to the gateway router. • When there is a packet destined for an internal machine arrived at the router, what should the router and NAT box do? • For IP packets carrying TCP or UDP, use port ...
... • The NAT box will convert the internal IP address to the real IP address of the company, and pass the packet to the gateway router. • When there is a packet destined for an internal machine arrived at the router, what should the router and NAT box do? • For IP packets carrying TCP or UDP, use port ...
a Engineer-to-Engineer Note EE-269
... streaming sequences (e.g., audio or video). TCP is a highly reliable host-to-host protocol for a controlled connection. TCP is appropriate for applications that require guaranteed delivery. Application Layer ...
... streaming sequences (e.g., audio or video). TCP is a highly reliable host-to-host protocol for a controlled connection. TCP is appropriate for applications that require guaranteed delivery. Application Layer ...
Network Performance Definitions - Network Startup Resource Center
... USER: user running (owner) of the process %CPU: Percentage of CPU utilization by the process since the last sample %MEM: Percentage of physical memory (RAM) used by the process TIME: Total CPU time used by the process since it ...
... USER: user running (owner) of the process %CPU: Percentage of CPU utilization by the process since the last sample %MEM: Percentage of physical memory (RAM) used by the process TIME: Total CPU time used by the process since it ...
Part I: Introduction
... prevent illegal modification/access of internal data e.g., attacker replaces CIA’s homepage with something else allow only authorized access to inside network set of authenticated users/hosts three types of firewalls: stateless packet filters stateful packet filters application gateways Ne ...
... prevent illegal modification/access of internal data e.g., attacker replaces CIA’s homepage with something else allow only authorized access to inside network set of authenticated users/hosts three types of firewalls: stateless packet filters stateful packet filters application gateways Ne ...
Virtual Private Networks - Mathematics and Computer Science
... http://www.cisco.com/web/about/ciscoitatwork/downloads/ciscoitatwor ...
... http://www.cisco.com/web/about/ciscoitatwork/downloads/ciscoitatwor ...
IP address
... large IP datagram are divided (“fragmented”) within net one datagram becomes several datagrams “reassembled” only at final destination IP header bits used to Adapted from: Computer Networking, Kurose/Ross identify, order related ...
... large IP datagram are divided (“fragmented”) within net one datagram becomes several datagrams “reassembled” only at final destination IP header bits used to Adapted from: Computer Networking, Kurose/Ross identify, order related ...
Week_Ten_Network
... server. For example, your Internet server provider may provide you with a PPP connection so that the provider's server can respond to your requests, pass them on to the Internet, and forward your requested Internet responses back to you. PPP uses the Internet protocol (IP) (and is designed to handle ...
... server. For example, your Internet server provider may provide you with a PPP connection so that the provider's server can respond to your requests, pass them on to the Internet, and forward your requested Internet responses back to you. PPP uses the Internet protocol (IP) (and is designed to handle ...
Chapter 10 Lecture Presentation
... RTP companion protocol Monitors quality of service at receivers Conveys monitored info to senders Canonical Name CNAME for each participant RTCP Packets ...
... RTP companion protocol Monitors quality of service at receivers Conveys monitored info to senders Canonical Name CNAME for each participant RTCP Packets ...
Chap12-Layers
... Main points • Network has a state : the list of active connections • Network can guarantee Quality Of Service – Reservation of transmission capacity at connection establishment – Monitoring of data transfer and correction of transmission errors by retransmission ...
... Main points • Network has a state : the list of active connections • Network can guarantee Quality Of Service – Reservation of transmission capacity at connection establishment – Monitoring of data transfer and correction of transmission errors by retransmission ...
Sigurnost bezicnih racunalnih mreza
... way. We want to accomplish that only internal host can make calls to someone’s port 25. We can do this by paying attention to the direction of the packet, and by looking at some of the control fields. In particular, an initial open request packet in TCP does not have the ACK bit set in the header; a ...
... way. We want to accomplish that only internal host can make calls to someone’s port 25. We can do this by paying attention to the direction of the packet, and by looking at some of the control fields. In particular, an initial open request packet in TCP does not have the ACK bit set in the header; a ...
EECC694 - Shaaban
... ARPANET's purpose was to provide the U.S. Defense Network (DDN) with redundant links between its sites and the Pentagon, relying on intelligent data packets that could automatically route themselves around failed network routers and links. ...
... ARPANET's purpose was to provide the U.S. Defense Network (DDN) with redundant links between its sites and the Pentagon, relying on intelligent data packets that could automatically route themselves around failed network routers and links. ...
Information and Data Modeling Current Status - Docbox
... – How to coordinate efforts and make SDO domain expertise available to Open Source Communities in a format they can use? ...
... – How to coordinate efforts and make SDO domain expertise available to Open Source Communities in a format they can use? ...
Presentation Title Presentation Title Presentation Title
... • Use Bayesian probabilistic approach for mixing second hand information from neighboring nodes with directly observed information to calculate trust1 • Trust-based models usually involve high computational overhead, and building an efficient scheme for resource-constrained WSNs is a very challengin ...
... • Use Bayesian probabilistic approach for mixing second hand information from neighboring nodes with directly observed information to calculate trust1 • Trust-based models usually involve high computational overhead, and building an efficient scheme for resource-constrained WSNs is a very challengin ...
Chapter 8
... • Enables fair comparison between various technologies – Maps link quality over a generic metric – Load and available capacity are also harmonized ...
... • Enables fair comparison between various technologies – Maps link quality over a generic metric – Load and available capacity are also harmonized ...
Data communications and enterprise networking
... The CIS222 module consists of two distinct parts which correspond to the two volumes of the subject guide. The first part of the course is called ‘Data Communications’ and is an introduction to the terms, concepts and network architectures required to understand how data is transmitted through commun ...
... The CIS222 module consists of two distinct parts which correspond to the two volumes of the subject guide. The first part of the course is called ‘Data Communications’ and is an introduction to the terms, concepts and network architectures required to understand how data is transmitted through commun ...
Chapter 4 slides - Uppsala University
... service can adapt, perform “dumb” end systems control, error recovery telephones simple inside network, complexity inside complexity at “edge” network many link types different characteristics uniform service difficult Network Layer ...
... service can adapt, perform “dumb” end systems control, error recovery telephones simple inside network, complexity inside complexity at “edge” network many link types different characteristics uniform service difficult Network Layer ...
ppt file - University of New Mexico
... typically IP (value = 2), but other network types may also be represented ...
... typically IP (value = 2), but other network types may also be represented ...
3rd Edition: Chapter 2
... may be intermittently connected may have dynamic IP addresses do not communicate directly with each other ...
... may be intermittently connected may have dynamic IP addresses do not communicate directly with each other ...
Mobile Communications
... TCP performance over satellite - Positive feedback mechanism - Achieve rate control and reliable delivery Performance enhancement - TCP selective acknowledgement - TCP for transaction - Persistent TCP connection - Path Maximum Transfer Unit ...
... TCP performance over satellite - Positive feedback mechanism - Achieve rate control and reliable delivery Performance enhancement - TCP selective acknowledgement - TCP for transaction - Persistent TCP connection - Path Maximum Transfer Unit ...
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).