An Introduction Until recently, reliable communication has meant the use of leased lines to maintain a Wide Area Network (WAN). Leased lines, ranging from Integrated Services Digital Network (ISDN, which runs at 144 Kbps) to Optical Carrier-3 (OC3, which runs at 155 Mbps) fiber, provide a company with a way to expand their private network beyond their immediate geographic area. A WAN has obvious advantages over a public network like the Internet when it comes to reliability, performance, and security, but maintaining a WAN, particularly when using leased lines, can become quite expensive (it often rises in cost as the distance between the offices increases). As the popularity of the Internet has grown, businesses have turned to it as a means of extending their own networks. First came intranets, which are sites designed for use only by company employees. Now, many companies are creating their own Virtual Private Networks (VPNs) to accommodate the needs of remote employees and distant offices. A typical VPN might have a main Local Area Network (LAN) at the corporate headquarters of a company, other LAN's at remote offices or facilities, and individual users connecting from out in the field. Basically a VPN is a private network that uses a public network (usually the Internet) to connect remote sites or users together. Instead of using a dedicated, real-world connection, such as leased line, a VPN uses "virtual" connections routed through the Internet from the company's private network to the remote site or employee. What Makes a VPN? There are two common types of VPNs: 1. Remote-Access Also called a Virtual Private Dial-up Network (VPDN), this is a user-to-LAN connection used by a company that has employees who need to connect to the private network from various remote locations. Typically, a corporation that wishes to set up a large remote-access VPN provides some form of Internet dial-up account to their users using an Internet Service Provider (ISP). The telecommuter can then dial a 1-800 number to reach the Internet and use their VPN client software to access the corporate network. A good example of a company that needs a remote-access VPN would be a large firm with hundreds of sales people in the field. Remote-access VPNs permit secure, encrypted connections between a company's private network and remote users through a third- party service provider. 2. Site-to-Site Through the use of dedicated equipment and large-scale encryption, a company can connect multiple fixed sites over a public network such as the Internet.
Cisco Designs, manufactures, and sells Internet Protocol (IP) - based networking and other products related to the communications and information technology (IT) industry and provide services associated with these products and their use. The company provides products for transporting data, voice within buildings, across campuses and globally. The products are utilized at enterprise businesses, public institutions, telecommunications companies and other service providers, commercial businesses, and personal residences. Cisco conducts its business globally and manages its business geographically. Its business is divided into the following three geographic segments: The Americans; Europe, M...
allow almost anyone access to the internet virtually anonymously and untraceably. The cyber investigator can attempt to obtain the IP address, which would lead investigators to the actual computer used to commit a crime. (Walker, Brock, & Stuart, 2006) However, when that computer is in a net café, with literally hundreds of potential users, finding the one person who committed the crime just becomes infinitely more difficult to achieve because the criminal knows that there are open ports to gain free unlimited access to the internet.
Depending on the circumstances of an attack, we will be enabling Virtual Private Network (VPN) which will provide secure network over the internet. It will be beneficial for the company because communications and messages will be encrypted if they are receiving or sending it to the remote users of the company (Henry, A). By controlling the traffic can slow down DDoS attack if unwanted connections are blocked which are not needed on the servers. These are the steps which our company will take to contain the data of our
The encryption process is found on the governments SIPRnet web, which is used for the transfer of classified information only. For voice communications, the government uses secured lines that will scramble communications into meaningless sounds or scratches. The only problem with these types of devices is that they cannot be located just anywhere and can be very expensive to maintain; furthermore, facilities must be able to support these classified mediums.
Zero-knowledge DNS: Use the DNS from the VPN instead of your own. Speed check: Keep an eye on speed, download speed and bandwidth usage at your own pace. Choose your VPN protocol: Choose the way you want to be connected to the VPN server.
The increasing use of NAT comes from a number of factors. The major factor is that there is a world shortage of IP addresses. As the Internet has grown, assigning perfectly good network addresses to private networks came to be seen as a waste. Under the Network Address Translation (NAT) standard, certain IP addresses were set aside for reuse by private networks. In addition to reducing the number of IPv4 addresses needed, NAT also provides a layer of obscurity for the private network, because all hosts outside of the private network observe communication through the one shared IP address. NAT is not the same thing as a firewall or a proxy server, but it does contribute to security. NAT also succeeds in the ease and flexibility of network administration. It can divide a large network into several smaller ones by exposing only one IP address to the outside, which means that computers can be added, removed, or have their addresses changed without impacting external networks. Other benefits include Protocol-level protection, Automatic client computer configuration control, and Packet level filtering and routing.
Berean¡¦s existing network infrastructure is wire line, and uses a T1. Remote users access the network through a dial-up modem pool. Berean¡¦s wire line network model severely limits the accessibility and effectiveness of the Berean network. For example, employees in Berean facilities are unable to access the network easily from meetings, the cafeteria, or anywhere other than their offices. In addition, the effectiveness of remote users is limited by the slow speed of present-day dial-up modem connections.
Virtual Private Network presents some advantages over the traditional network technologies. VPN offers direct cost savings over leased lines or long-distance calls for remote access, savings resulting from reduced training requirements and equipment, increased flexibility, scalability, and security. The main advantage of VPN is the cost savings of Internet VPN when compared to networks built using conventional leased lines. Leased lines include tariffs that have an installation fee, a fixed monthly cost, and a mileage charge. The cost to an organization of traditional leased lines may be reasonable at first but can increase exponentially as the organization grows. As an organization grows and more companies must be added to the network, the number of leased lines required increases dramatically. VPN that utilizes the Internet avoids this problem by simply tapping into the geographically distributed access already available. Another way VPN reduces costs is by reducing the need for long-distance telephone charges for remote access. Instead of having the offsite team of a company dial into the corporate modem bank via long distance lines, the company’s VPN allows them to simply place local calls to the ISP’s POP in order to connect to the corporate network.
A reliable environment for teams to exchange information in a secure manner may be a necessity for virtual teams; therefore, security can pose another challenge. Different types of projects may require different levels of security. A virtual private network may be necessary to ensure that information is passed securely to the desired recipients. Authentication and encryption techniques can guarantee secure transmission of electronic...
Intranet: A network that connects people within a company to each other and to the
Local Area Networks also called LANs have been a major player in industrialization of computers. In the past 20 or so years the worlds industry has be invaded with new computer technology. It has made such an impact on the way we do business that it has become essential with an ever-growing need for improvement. LANs give an employer the ability to share information between computers with a simple relatively inexpensive system of network cards and software. It also lets the user or users share hardware such as Printers and scanners. The speed of access between the computers is lighting fast because the data has a short distance to cover. In most cases a LAN only occupies one or a group of buildings located next to each other. For larger area need there are several other types of networks such as the Internet.
The Internet is a global network connecting millions of personal, institutional and company computers. The number of computers used by the internet is growing rapidly. The United States is connected with over 100 countries worldwide and linked together to exchange of data, news and opinions. The Internet is decentralized design. This means that there isn't just one computer that stores all of the information from the Internet. There are many independent host servers located throughout the US and the world that store the information made available to the global Internet community.
The Internet has revolutionized the computer and communications world like nothing before. The Internet enables communication and transmission of data between computers at different locations. The Internet is a computer application that connects tens of thousands of interconnected computer networks that include 1.7 million host computers around the world. The basis of connecting all these computers together is by the use of ordinary telephone wires. Users are then directly joined to other computer users at there own will for a small connection fee per month. The connection conveniently includes unlimited access to over a million web sites twenty-four hours a day, seven days a week. There are many reasons why the Internet is important these reasons include: The net adapts to damage and error, data travels at 2/3 the speed of light on copper and fiber, the internet provides the same functionality to everyone, the net is the fastest growing technology ever, the net promotes freedom of speech, the net is digital, and can correct errors. Connecting to the Internet cost the taxpayer little or nothing, since each node was independent, and had to handle its own financing and its own technical requirements.
* Telnet or remote login. Permits your computer to log onto another computer and use it as if you were there.
At least three decades later the web has grown to include over a million sites, while maintaining the original governments use to maintain a network between locations. Today the government still uses the internet for official business, generally for communications between commands and even allied countries. For instance NASA will pass along launch data over the internet to coordinate a shuttle launch. This has been a useful tool for the government for fifty years now. The government will continue to use this capability, which as a result will lead to further discoveries that will improve the quality of the internet.