Local Area Network (Lan) Basic Components

In this modern day and age of computing, networks are a huge part of IT. It is important now more than ever that data sent over any network, whether it be a LAN (Local Area Network) or WAN (Wide Area Network; The Internet) is kept safe, private (when required) and uninterrupted in

Firewall: A firewall is a software or hardware-based network security system that controls the incoming and outgoing network traffic by analysing the data packets and

A LAN is a ‘Local Area Network’. It is a small network of computers most often

A firewall protects networked computers from intentional hostile intrusion that could compromise confidentiality or result in data corruption or denial of service. It may be a hardware device or a software program running on a secure host computer. It must have at least two network interfaces, one of the network it is intended to protect, and one for the network it exposed

LAN stands for Local Area Network. LAN is a type of network that interconnects computers and devices either wired or wireless and covers a greater distance. LAN is mainly used in private organisations such as college or university. More or less everyone uses wireless router at home these days and the user is able to connect between 5-10 devices wirelessly. The user can share the broadband or the connection with ADSL by using Ethernet cables. Smaller LANs can connect at least

contains the case narrative, related figures, and a set of questions and problems. These do not have one unique solution. There are too many alternatives when dealing with LANs, WANs, MANs, BNs, and the Internet, so a reallife network design and development problem can have several workable answers.

This is a security system that was executed in software or hardware that is used to prevent unauthorised access to or from an intranet which is a private network, firewalls are frequently used during that time. They work by filtering packets of data as they enter or leave the network, on the other hand they apply security to some particular applications, firewalls are like the front line for defence, they make sure that everything is secure before they allow anyone to enter or leave the network, which can help keep not only the computers but also the organisations and information safe.

A firewall is a system designed to prevent unauthorized access to or from a private network. You can implement a firewall in either hardware or software form, or a combination of both. Firewalls prevent unauthorized Internet users from accessing private networks connected to the Internet, especially intranets. All messages entering or leaving the intranet (i.e., the local network to which you are connected) must pass through the firewall, which examines each message and blocks those that do not meet the specified security criteria. In protecting private information, a firewall is considered a first line of defense; it cannot be the only line of defense. Firewalls are generally designed to protect network traffic and connections, and therefore do not attempt to authenticate individual users when determining who can access a particular computer or network. Furthermore, firewalls can be set up to prevent employees from accessing certain content or downloading

For example, the Sales and Marketing Division has a desktop computer for each of the account representatives. All of these computers are connected to a small local area network (LAN) that serves only the Sales and Marketing Division. The

The Firewall systems will be used to prevent scanning activity as well as blocking malicious IPs from entering the network. This is critical because being able to block this type of traffic can save a network and the people who watch it a lot of time on incident investigations. When hackers are scanning a network they are looking for reply backs from any port(s) that will respond. This can help them finger print a system and by knowing what is on a network they can use this information for crafting attacks. Once this is identified by a security team they can block the intruding IP at the firewall. This will prevent all traffic coming and going to the suspicious IP in question.

Firewalls monitor network traffic in real time and either allows or denies certain traffic into or out of the network based on the type of firewall and the rules they are programmed to follow. Firewalls are a very important baseline in system infrastructure and design.

In today’s society, it is commonplace for one to be electronically “connected”, by using devices like computers, mobile smartphones, gaming devices, tablets or laptops. Typically there is some type of network, which enables us to be connected, such as a Wide Area Network (WAN), a Local Area Network (LAN) or even a Home Area Network (HAN). A WAN is the most expansive type of network commonly used, which can cover large geographical areas, usually by amalgamating multiple LANs. The most frequently used WAN is the internet, which many of us connect to daily. A smaller type of network is a LAN, most often used in the workplace to connect computers and devices in the same office or building, so users can collaborate and efficiently share resources.

A firewall is a system or group of systems that enforces an access control policy between two or more networks. The means by which this control is accomplished varies widely, but in principle, the firewall is a pair of mechanisms, one that blocks traffic and one that permits traffic. Some firewalls emphasize blocking traffic, while others emphasize permitting traffic. The most important thing to recognize about a firewall is that it implements an access control policy. If you don't know what kind of access you want to permit or deny, or you let someone else or some product configure a firewall based on judgment other than yours, that entity is making policy for your whole organization.

• Purpose of a LAN (hosts, devices (dual functions), examples of LAN use, types of resources shared, information that can be accessed using a LAN, purpose of LAN components) AND advantages and disadvantages of cable, fibre, wireless in terms of bandwidth, location, security, reliability, set up, suitability

The cost for each wireless node is generally higher than a conventional LAN node. LAN devices Today, LANs use sophisticated programs that permit several users to work with the same resources at the same time. This can include hard disk drives, printers, plotters, software, etc. LANs are composed of various components performing specific tasks so each user can access shared resources.