Network security is becoming increasingly important as more data needs to be monitored and protected from threats. Protecting a network involves various factors like password authentication, access control, software updates, antivirus software, firewalls, and intrusion detection tools. As threats become more sophisticated, companies need security departments and must go beyond just firewalls to adequately safeguard their networks and data.

1. Essay on Network Security
Network Security
1. What is network security?
Network security has changed significantly over the past years. There is more and more data to monitor and analyze in order to detect the activity of
your data and systems. Securing a network has many variables. Password authentication, network access, patches, anti–virus protection, intrusion
detection, firewall and network monitoring tools are just a few of the things you can do to protect yourself.
Threats to your network is becoming more complex and it is requiring lots of money, time and sacrifices to keep up with the growing amount of
potential attacks. Companies cannot protect themselves with just a firewall anymore. Now it's requiring a full security department that...show more
content...
It's the same type of the thing, protecting your computer data from getting in the wrong hands. Who are these wrong hands? The familiar term is
hacker which Webster's dictionary describes as "3: an expert at programming and solving problems with a computer 4: a person who illegally gains
access to and sometimes tampers with information in a computer system". One of the main reasons for the high level of network security is because of
the bad part of the computer hacking world.
2. How to protect yourself? Protecting yourself is only effective if you know what you are protecting your against and how to protect. There are a
couple ways to start getting you more protected. The first is installing the default operating system. This would have a default password, no
security patches and no virus protection. The second thing you don't want to do is use simple and common passwords like for example,
password. In the 10 immutable laws below, one of the laws is someone is always trying to guess your password so make sure it's unique. A third
suggestion would be to keep as many ports that you don't need closed and a firewall can do this which is covered in the 3rd section on Security
Technologies. Finally, make sure you don't click on any email that you don't recognize or looks suspicions. Many viruses get spread by opening
emails or clicking on the link inside. This rule would help decrease the spread
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2. networking Essay example
INTRODUCTION TO NETWORKING
Abstract
One problem seen with people today is that they are unaware what of a computer network is. They might have heard of a computer network, but
they are clueless as to how it works or why it works. People have basic questions that need to be answered. The goal of this paper is to give basic
network information that will hopefully answer those questions. To give people an understanding about computer networks there are several areas that
we must discuss. Definitions of some network nomenclature will be provided. Many people may have heard or seen these words, but never knew what
they meant. Another part that is important is...show more content...
Demand for the services of these large computers increased which meant upgrades had to be made frequently to keep the processing power ahead of
the user need. These systems, called Mainframes, had been designed to provide computing power, but did not have the flexibility to satisfy the
growing set of applications." (Jones, 2001, Personal Computers History and Development)
Also, in the 1960's the military used networks to communicate to one another. It worked like the time–sharing network. They needed this network to
communicate between cities, bases, and states. "There was also a concern about a nuclear war. If there was a nuclear war how would people
communicate? There needed to be a network that would be able to work after a nuclear strike. They came up with a "hot potato network.
Basically the information would be tossed like a hot potato from user to user until it reached its destination. The actual route it took was not important.
This meant that if big parts of the network were destroyed the message would try another route. It becomes apparent this was not as efficient compared
to the traditional telephone system." (Jones, 2001, Personal Computers History and Development)
During the 1970's and 1980's, networking was continuously being upgraded. Businesses, schools, and the government needed faster networking
capabilities to handle all the people that were using the basic "time–sharing" network. "In 1975, the first personal
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3. Essay about networks
Improving Network Performance
Nowadays, it seems that everyone has a computer and is discovering that communication technologies are necessary. E–mail, Internet, and file
transferring has become a part of the modern world. Networks allow people to connect their computers together and to share resources. They allow
people to communicate and interact with each other. The days of the lone PC are diminishing.
At the same time, computers are getting faster than ever. The most powerful PC five years ago couldn't be sold for half of its original price today.
This poses some problems to the consumer. New technologies can't be driven by older technology. As innovations continue to be invented, the computer
of yesterday is fast outpaced by the...show more content...
Modems, a popular communications device, typically have throughput rates from 9600 baud (See Glossary) to 28800 baud. Modems use an RS232 or
serial port connection.
One solution to this transmission speed is the parallel or Centronics port. This port transmits eight bits at a time instead of one with a serial port,
which is how they got their names. Because it sends eight bits at a time, a parallel port can achieve transfer rates of up to 40,000 bits or 5000
characters a second (Seyer 64). Parallel ports are commonly used to connect to printers and external storage devices.
The main problem with modems and parallel ports is that only two computers can be connected at one time. Networks were invented to solve this. They
allowed a group of computers to communicate and to share resources such as hard disk space and printers. Different types of networks have different
throughput rates, but all are higher than either serial or parallel ports. The type of network used at Banks High School is an Ethernet network with
software from Novell. This network has the capability of supporting transfer rates up to ten megabits per second (Bennett 1). Although this seems like
a lot, remember that all of the computers on the network are using this connection at the same time and each computer has to share with every other
computer. There are a few ways to speed up a slow Ethernet network, however. Splitting the responsibility from one server to many is one way, and
using more than one
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4. Network Design Essay
In designing a network, it is essential to first determine the scope of the project by asking key questions that will aid in the design and build.
Questions such as how many servers and computers will be connected, what is the intended purpose of the network, and how much money is available
are basic questions that come immediately to mind. Other questions such as security considerations, and how will the physical architecture of the
building affect the design are often ignored but are equally important to the success of the network. Once these questions have been answered, the
process of network design can begin. As the design of the network affects both media choices and performance, it is crucial that a design which takes
current...show more content...
Category 5 TP cable is rated for speeds up to 100Mbps, operating at 100Mhz, however an enhancement to this, Category 5e cable, is rated for 1Gbps
at the same frequency. The latest advancements for TP cabling have improved its speed from 100Mbps to 1Gbps. This speed increase requires the use
of a minimum Category 5e rated cable, but is optimized for Category 6 cable, rated at 1Gbps, operating at 200Mhz. Unlike TP cable, Fiber–optic cable
does not have Categories. It is rated at speeds up to 1Gbps and is identified by its type of connection, ST for Straight Tip, and SC for Straight
Connection are two of the most common. Both TP and Fiber–optic cables are commonly integrated together in a network design. As TP is limited to a
maximum distance of 100m, Fiber–optic cable is typically used as a high–speed backbone, extending the network to points farther than 100m.
The cost of cabling and ease of installation is an important factor when deciding what types of cable to run and how long the length of cable will be.
By far the easiest and cheapest of the two to install is TP, and can be used to connect all nodes on the network quickly and fairly inexpensively.
However, Fiber–optic is expensive to install, requiring specialized equipment to ensure correct termination and is typically used to create a high speed
backbone. The design of the network now includes the layout of the building, the type of cable to be used
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5. Essay on Network
Introduction
"It is certainly safe to say that computers have become as integral to modern life as fast food, cell phones, and sport utility vehicles". (Joe, 2004) We
are living in the information–exchanged age. It has been dramatically changed since last decades. How could this happen? The answer will be network.
A network can be anything from a simple collection of computers at one location which have been tied together using a particular connectivity medium
(such as network cabling) to a giant global network, e.g. internet, which uses several different connectivity media, including microwave and satellite
technology. Once, the network is going to falling apart which will be disaster for us. Thus, we should know what will cause of...show more content...
Sometimes, a disconnected cable or unplugged hub will be causing the problem on the LAN. For example: network cables have experience
disconnection, breaks, shorts and other problems. So, Joe Habraken (2004) pointed out "physical cabling is always suspected when you are
connectivity problems". Diagnosing these types of problems is done using various tools which is named as "digital voltmeter". "A voltmeter is an
instrument used for measuring the electrical potential difference between two points in an electric circuit". (Wikipedia, 2011) A digital voltmeter
is a device to test the cable for a break or a short by connecting to a cable. It can tell whether the cable is bad or not and whether a short or break. If the
cable has a break, the cable should be traced to find where the break has occurred. If there is a short which just replace it.
II.Software
Software can be one of reason which can cause the disconnection in the network. Robert Hudyma and Deborach I. Fels (Unknown) pointed out:
"Network software failures can be caused by faulty device drivers, subtle differences in protocols implementation and handling and operating system
faults and anomalies". There is some much different software which can cause the disconnection. However, it is an example will be given. It happens
frequently, two computers inadvertently configured with the same IP address will knock each other off the network. It can be
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6. Essay on Wide Area Networks
Wide Area Networks
The creation of wide area networks links mass communication from people all over the world with a vast variety of different uses. "A wide area
network is telecommunications networks covering a large geographic area." The internet is the biggest example of a wide area network and has
influenced our daily lives all around the world. Wide area networks are connected to local area networks to enable computers to share, send, and access
information on a larger scale. These recent technologies over the past 20 years have affected the way we communicate, how businesses operate, and
many other factors that we take for granted. Wide area networks are a fast growing telecommunications business which are developing new...show more
content...
These five types of connections are Point–to–Point Links, Circuit Switching, Packet Switching, WAN Virtual Circuits, and WAN Dialup Services.
"Point–to–point links provide a single, pre–established WAN communications path from the customer premises through a carrier network, such as a
telephone company, to a remote network." The lines are designated for this connection and usually run on leased lines but are typically more
expensive than a service which is shared. Circuit switching enables data connections when the user goes to access another network. Like a telephone
line the connection is linked by a router and when this information is allowed by circuit switches the router accesses the data transmits a connection.
This connection actually makes a call and connects similar to a phone call. Once the information is translated and sent the user cancels the connection
when they are finished. "Packet switching is a WAN technology in which users share common carrier resources." Packet switching has carrier
networks that allow people with this feature to share from this network. These carrier networks hold packets of information that can be accessed by
many customers at any time. WAN virtual clients work with a virtual circuit which is a logical circuit created within a shared network between two
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7. Wireless Networking Essay
Wireless Networking
The term wireless networking is a technology that enables two or more computers to communicate using standard network protocols without network
cabling. The industry standard mainly used for wireless networking is IEEE (Institute of Electrical and Electronic Engineers) 802.11. What this
standard is could be described as a wireless network with hardware that requires the use of technology, which deals with radio frequencies as well as
data transmission.
There are two kinds of wireless networks, Ad–Hoc (Peer to Peer), or access point (base station). Ad–Hoc (Peer to Peer) consists of a number of
computers each equipped with a wireless networking interface card. Each computer can communicate to other wireless enabled...show more content...
A software access point does not limit the type or number of network interfaces you use. It is very flexible in providing access to different network
types such as different types of Ethernet, Wireless, and Token Ring networks.
As mentioned before, software access points can offer more features like Internet access, web caching or content filtering, which are useful to some
users and administrators.
The range of a wireless network is finite. With this limitation overlapping of access points are needed for seamless use. Use of wireless networking
indoors can range from 150 to 300 feet; outdoor range can be up to 1000 feet (depending on vender of equipment). Other variables of performance are
the environment and building construction. The further you are from an access point the performance will also degrade.
Multiple access points are needed for roaming building a steady network connection by monitoring the signal strength from in range access points and
locking on to the one with the best quality. The amount of connections that can use an access point depends on the manufacturer. Some are limited to
ten and other more expensive access point's support up to one hundred connections. Using more computers than recommended will degrade the
performance and reliability of all the connections at that access point. It is
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8. Leading An Event
How to Get Leads on An Event
Are you wondering how you can rock and get leads, the next time you head to a trade show, conference or even a networking event? This article
outlines a couple of pointers to help you on the same
Whether you are new in an industry or a multi–year veteran, networking events can be valuable tools for leads generation. It is the best place to get
your next client, referral source or even a friend who might eventually result in new business. However, without a well–thought–out strategy, the time
and resources you invest will not result in quality leads.
Generating event based primes is very simple with a given etiquette and approach. Here are a few tips on how to get leads on your next networking or
marketing event...show more content...
Be more specific and engaging on what you do
A person should be more specific on what one does by asking himself/herself why people they are connecting with should care about what they are
saying. After that craft an engaging conversation which will create a rapport between the two of you. Also, to be more appealing, use your body
language like nodding to show you are still listening and following which will develop a trust. All these give you individual control over what
happens, and it would not be a wonder if your prospects ask for contact information next.
Targeted mingling A person should always set a goal to meet 2–5 people and not try associating and talking to everyone in the event. It is even said that
sometimes, one solid connection is plenty. A pre–planning on whom to meet and talk to should be done. After that a serious research on the selectively
chosen leads should be done before the conference, to ensure that you understand what they do and get ways in which your business can improve that.
Through targeted mingling, one has higher chances of generating meaningful leads which will build and grow his/her brand
Consider your leads networks
When choosing whom to talk to, always remember that people can help you get leads indirectly from someone in their network. As you approach and
make connections with new people, you should thoroughly engage with them. You should not leave unfinished conversations just because you have
seen someone who's more
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9. Essay on Network Security
Network Security
In the last decade, the number of computers in use has exploded. For quite some time now, computers have been a crucial element in how we entertain
and educate ourselves, and most importantly, how we do business. It seems obvious in retrospect that a natural result of the explosive growth in
computer use would be an even more explosive (although delayed) growth in the desire and need for computers to talk with each other. For quite some
time, businesses were primarily interested in sharing data within an office or campus environment, this led to the development of various protocols
suited specifically to this task.
Within the last five years, businesses have begun to need to share data across wide areas. This has...show more content...
Unfortunately, none of the current solutions scale particularly well. Two general approaches dominate this area:
1. Virtual Private Networks: When a virtual private network is implemented, the lowest levels of the TCP/IP protocol are implemented using an
existing TCP/IP connection. There are a number of ways to accomplish this which tradeoff between abstraction and efficiency. The advantage this
gives you in terms of secure data transfer is only a single step further away. Because a VPN gives you complete control over the physical layer, it is
entirely within the network designer's power to encrypt the connection at the physical (virtual) layer. By doing this, all traffic of any sort over the
VPN will be encrypted, whether it be at the application layer (such as Mail or News) or at the lowest layers of the stack (IP, ICMP). The primary
advantages of VPNs are: they allow private address space (you can have more machines on a network), and they allow the packet encryption/translation
overhead to be done on dedicated systems, decreasing the load placed on production machines.
2. Packet Level Encryption: Another approach is to encrypt traffic at a higher layer in the TCP/IP stack. Several methods exist for the secure
authentication and encryption of telnet and rlogin sessions (Kerberos, S/Key and DESlogin), which are examples of encryption at the highest level of
the stack (the application layer). The advantages to encrypting
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