Virtual Private Networks or VPNs have become commonplace for millions of users across the world in both their personal lives and their workplaces. In essence they allow computers on separate local networks (LANs) in different locations to connect to each other across the public connections of the internet without anyone else being able to see or intercept the information that is travelling between them.
They are ideal and vital for connecting employees who are working on the move, from home or from satellite office locations as well as private individuals who need to connect with their home networks when they're out and about. Users can connect to local networks through VPNs from any type of device, whether it be a desktop computer, a laptop,
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The outer packets are also encrypted and pre-programmed with their source and their destination, and only the destination points are configured to decrypt them. The packets are used in conjunction with authentication measures at each end to ensure that the correct users and devices are accessing the connection. If anyone intercepts the packets as they take their journey across the public networks, they will only be able to determine the firewall/gateway server that they are heading towards, but none of the data contained within them or their final destination on the local network.
Types of VPN
There are three types of VPNs that provide users with the functionality described above and these fall within the two categories: computer-to-network VPNs and network-to-network VPNs.
Computer-to-network VPNs, or remote access VPNs, connect users on individual devices to a remote network via the internet as if their device was actually on the network in situ. The user simply installs software on their machine which creates the secure connection to a gateway or VPN server on the local network. They're the solution for employees working from home or on the move who need to 'remote in' and access work networks, files and
Maintain accurate inventory of control System Devices and check the exposure of this devices to External Networks:
VPN – Virtual Private Network - a method employing encryption to provide secure access to a remote computer over the Internet.
TOR (Roger Dingledine) is a circuit based low-latency anonymous communication service. TOR is now in its second generation and was developed from the Onion routing program. The routing system can run on several operating systems and protect the anonymity of the user. The latest TOR version supports perfect forward secrecy, congestion control, directory servers, integrity checking and configurable exit policies. Tor is essentially a distributed overlay network which works on the application layer of the TCP protocol. It essentially anonymizes all TCP-based applications like web-browsing, SSH, instant messaging. Using TOR can protect against common form of Internet surveillance known as “traffic analysis” (Electronic Frontier Foundation). Knowing the source and destination of your internet traffic allows others to track your behavior and interests. An IP packet has a header and a dat...
Firewalls check incoming traffic against their own filters, which are set by the firewall's software company. It works similarly with outgoing traffic; if your computer is infected with a virus and tries to send instructions to other computers via your network, the software firewall will keep it contained (Wright, n.d., para 3).
In using NAT, hosts on the Internet appear to be communicating directly with the NAT device rather than with the actual host inside the private network. Inbound packets are sent to the NAT device's IP address and the device changes the destination packet header from its own Internet address to the private network address of the true destination host. The result is that, in theory, a single globally unique IP address is used for hundreds, thousands, or even millions of privately addressed hosts. In practice, however, there are drawbacks. For one thing, many Internet protocols and applications depend on the network being truly end-to-end, with packets forwarded entirely unmodified from the source to the destination.
Roberts, Richard M. "Network Secrurity." Networking Fundamentals. 2nd ed. Tinley Park, IL: Goodheart-Willcox, 2005. 599-639. Print.
It is a portable storage device that can be attached to a computer through a USB or FireWire connection, or wirelessly. They have high storage capacities and are often used to back up computers or serve as a network
The phrase virtual private network seems imposing, but a VPN boils down to special software in a client PC connecting across a corporate intranet or the Internet to special software in a dedicated box or a server in your server room. Encryption at both ends keeps data safe, and you can choose from several options for user authentication
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...
Remote access is a tricky concept to comprehend mostly due to the complexity of all of the different steps and process that all have to work together to ensure secure connections. The number one priority for any company is to make sure networks are secured. With a good portion of our workforce working remotely it can make that task even more difficult. To make sure that our employees devices whether company issued or personal are healthy enough to make those connections we use the NAP functionality of Windows Server 2012 to ensure compliance.
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.
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.
It allows consumers and businesses to use applications without installation and access their personal files at any computer with internet access. E.g. Yahoo mail, Gmail, Hotmail.
* Telnet or remote login. Permits your computer to log onto another computer and use it as if you were there.