There are many types of routing or data/packet retransmitting hardware and devices that networks can utilize for security purposes. Some use one or a combination for data transfer. However, each poses a level or type of vulnerabilities, additional unwanted threats, and countless types of risk. The quintessential design is to provide a means to controlling the flow of packet transfer. The main function of the switch, router, gateways, or hubs is having the ability to process and forward data packets on the network. The creation and function is to ensure that each having their own unique functions and configurations which makes one a more viable optional choice over the next for ensuring data forwarding. For example, large networks will need routing protocols that will send the data packet to the intended destination and not broadcast it throughout the entire network.
Gateways provide nodes with a contactless connection into the resources that are available for the users. The basic gateways that are installed in many pc are called NIC’s or network interface card (Andrews, 2006, pp. 846-847). These gateways can wither be hardware or protocols within the given equipment that in installed. It is essential that data have the ability to transverse the network. However, to accommodate this function, the data needs to be accepted/rejected and/or forward or dropped. For the purpose of connecting nods, networks, and interaction, gateways must be present. Without any form of implementing gateways, communications would be non-existent. However, the term gateway can also be referred to as routers, wiles AP’s, switches, and hubs. This is fairly easy to distinguish as it points to some form of access to the networks resources.
Hubs are the basic...
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...l, however, with more accuracy involved. Nodes that are connected to the switch will not re-transmit data to everyone. The switch will deliver its payload according to the hear destination which keeps everyone else from receiving the data. Essentially speaking and highly dependent on the network set-up and configurations, each provides for a single point of access, ingress/egress management, and a certain level of security.
Works Cited
(2006). Installing a Network Interface Card. In J. Andrews, Managing and Maintaining your PC (pp. 846-847). Boston, MA: Course Technology Cengage Learning.
Beasley, J. (2004). The Network switch. In J. Beasley, Networking (pp. 92-93). Upper Saddle River, NJ: Prentice Hall.
Institute, C. L. (2005). Switching and Routing. In R. H. Ivy, Networking + Fundamentals and Certification (pp. 192-193). Upper Saddle River, NJ: Prentice Hall.
COMP09022 Network Design BSc COMPUTER NETWORKING COMP09022 ICMPv6 Prepared by B00270675 13-03- 2015 WORD COUNT (0000) TABLE OF CONTENTS TITLE PAGE……………………………………………... 1 TABLE OF CONTENTS………………………………….. 2 INTRODUCTION TO THE REPORT……………………. 3 TABLE OF FEATURES.......................................................4
It is a network security measure used in computer networks to ensure that the secure network physically protected from other unprotected networks. This
In a DTN, a node is an entity with a bundle layer. A node may be a host, router, or gateway (or some combination) acting as a source, destination, or forwarder of bundles:
In order to have a greater understanding of the terminology and descriptions offered in this paper, we must first understand what a network switch is. A brief definition of a network switch is a computer networking device that connects network segments. It uses the logic of a Network bridge, but allows a physical and logical star topology. It is often used to replace network hubs. A switch is also often referred to as an intelligent hub.
How does data pass through the internet? If you said decision support systems, you are correct. In an indecisive world, network hardware devices uses decision support systems (DSS) to efficiently and effectively route data, in a local area network, with the least amount of errors and inconsistencies. Decision support systems are the brains behind network hardware, and would be near impossible for them to work without the intelligent core of each distinct DSS. There are a variety of network hardware devices: switches, hubs, and routers; and they all use algorithms/procedures to transfer data towards the correct destination. Although there are many more DSS related methods used to route traffic, this paper describes how these three devices use them and each of there functions. Other types of decision support systems that network hardware devices may use are firewall technology, network address translation, and filter tables, which are all described in this paper.
In a computer network, switches are devices that are used to connect devices together. Multiple cables can be connected to a switch to enable networked devices to communicate with each other. The role of a switch is to manage the flow of data throughout a network and this process is effective in its role due to the fact that the messages are sent only to the intended target. The media access control (MAC) is the identification that each device connected to the switch carries. By each device having individual IDs this increases the overall effectiveness and security of a network.
Roberts, Richard M. "Network Secrurity." Networking Fundamentals. 2nd ed. Tinley Park, IL: Goodheart-Willcox, 2005. 599-639. Print.
It has been demonstrated that a number of interoperable systems must be implemented to fully protect a network; a strategy known as Defense in Depth. Due to the multitude of security devices and device categories available, it can be very difficult to identify the correct tools for meeting security goals. Using the Defense in Depth strategy will require an understanding of the interactions between devices occuring within the network.
Star topology networks require more cabling than bus, but the tradeoff comes in the form of a more solid network topology. A break in the network media will only affect a single node, since every node has a dedicated connection to the central device; a hub or switch. This also makes the central device a Single Point of Failure (SPOF). Redundant or failover switches are often used to eliminate the SPOF in a star LAN.
Clark, Martin P.. Data Networks, IP, and the Internet: Protocols, design, and operation. Chichester, West Sussex, England: J. Wiley, 2003.
In packet switching the data which is to be transmitted is divided into the packets. In this switching the communication path is not dedicated to one communication party but one path or link is used by the packets from different parties. During transmission the packet finds the path to the destination. The paths for the transmission are not defined from the source and they are decided when the packet has reached a certain node. The packet contains the header that carries all the information about the IP addresses of the source and the destination. With the help of this information the switches and the routers in the paths decides which hops are used to reach the specific destination.
ABSTRACT : This paper describes the basic threats to the network security and the basic issues of interest in designing a secure network. it describes the important aspects of network security. A secure network is one which is free of unauthorized entries and hackers. INTRODUCTION
...vantage of the overall network design and implement usable subnets with virtual local area networks. Use encryption and encapsulation to secure communications of public segments to enable extranets and cross-Internet company traffic. Use items such as intrusion detection systems and firewalls to keep unauthorized users out and monitor activity. Taken together, these pieces can make a secure network that is efficient, manageable, and effective.
Hollows, P 2002, 'Essentials of a smooth-running network', Communications News, vol. 39, no. 7, p. 16.
TCP/IP is a network model which enables the communication across the Internet. The most fundamental protocol on which the Internet is built. This is made up of the 2 common networking protocols, TCP, for Transmission Control Protocol, and IP, for Internet Protocol. TCP maintains and handles packet flow linking the systems and IP protocol has the ability to handle the routing of packets. However The TCP/IP stack consists of 5 layers first being application layer, the transport layer, then the network layer, the link layer and finally the physical layer. The assignment focuses on the three middle layers and is divided into five parts. Firstly explaining how the TCP and UDP the most vital protocols needed to deliver and communicate.