Benefits Of Wireless Networking Solutions
A wireless network is a computer network that uses radio waves to send and receive data. There are two types of wireless networks, an access point and an ad hoc system. These two networks are connected without the use of cables.
In environments such as hospitals or classrooms, the Internet may be unavailable or impractical due to lack of power or security concerns. In these instances, a wireless network can prove helpful in providing connectivity for personal computers and other devices through the use of whatever available technology there is at hand. A commonly used form of this type of networking involves using cordless phones to create a makeshift wireless network connected through headsets that have microphones that transmit audio signals over radios similar to CB radios.
In some areas, where there is no infrastructure and a wireless network could be useful if properly set up, there are advertisements and talk shows that promote the best ways to set up a wireless network, such as how to find free equipment online. Specifics of how to set up and maintain such a network are best learned through hands-on experience.
If a wireless network is not sensitive information that needs to be protected, like in an open research lab, then having multiple access points is a common practice for security reasons. In some cases it may be cost effective or necessary to have only one access point in an area where many devices are expected or only one client device per user.
Group key management often involves sharing a group key, which uses public key cryptography, with a group of devices. The security of such a system relies on the way that keys are distributed to potential threats. If users choose to share their keys with everyone in the building or campus, then access may not be as secure as it could be if there was a private key that was used only within the group of devices.
For example, one person can have access to up to four devices. This depends on how many times they authenticate each device and what type of authentication they use. For example, WPA2-PSK can grant up to ten hours of offline-only roaming for two connections .
Because a wireless network is essentially a broadcast medium, it is susceptible to eavesdropping. A way to prevent this is by using encryption, which does not allow the signal to be modified by unauthorized parties who may be listening in. This can come from wireless card firmware updates or from third party software that can be installed with tools such as Wireshark to prevent packet modification.
Wireless networks are also susceptible to attacks. Being broadcast, the network is accessible by anyone in range who is using compatible equipment. This means that it’s possible to be attacked from anywhere within the broadcast coverage area, which can be quite large for modern equipment, including cellular smartphones and tablets.
ISPs are frequently attacked by those wishing to steal bandwidth or possibly damage the routers by blasting packet floods at them, overloading their capacity. Even an innocent user visiting a website can overload a router with HTTP downloads if they have a slow connection and a site that attracts many hits.