Installation and configure a Linksys wireless Router needn’t be a difficult challenge, especially with the newer Linksys router models getting easier to set up than ever. Having said that as soon as you use this user manual you will possess your personal wireless network set up quickly enough! How to configure linksys wireless router? First things first let’s take a look at the back for the router.

Whereas the various designs will be there are actually usually the subsequent ports: (more…)

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Wireless networks are communication that is done without the use of cables. Its use dates back several centuries. In the 1820′s, Hans Christian Oersted and Andre-Marie Ampere discovered electromagnetism, which is a manifestation of both the electric and magnetic fields. Then, in 1832, Joseph Henry and Samuel F.B. Morse had demonstrated how electrical telegraphy works, which is a telegraph that uses electrical signals that are relayed through telecommunication lines or radio.

Telegraphs started to make their appearance in the 1940’s when networks were built in California and in the East Coast of the United States. This was shortly followed by the first transatlantic cable set up in 1858, the propagation of wireless technology by James Clerk Maxwell in 1864 and subsequently a radio-telegraph experiment conducted by Marconi and Popov. As you can see, the technology that we have today all has its basis in the inventions and creations of these scientists a decades ago. (more…)

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Smart cards

A smart card is similar to a magnetic stripe card but contains a microprocessor chip. The first smart cards were prepaid telephone cards, which operated on stored prepaid values. They have moved on from this to be used for things such as library cards, credit cards, student cards, and electronic purses.

Today, there are three smart card types with different access methodologies.

Contact cards
With a contact smart card, the user inserts it into a reader in order to access the information on it. The data is then transferred once physical contact is made. The reader supplies power to the chip in the card through the contacts. These cards are used in financial applications such as store-value, debit, and credit cards because of their reliability and the high power available to the microchip processor. Contact cards are slower and require more servicing than contactless cards.

Contactless cards
Contactless cards communicate with the card reader using radio frequency technology. They are implanted with a radio antenna. No physical contact is required with the reader. Contactless smart cards are suitable for application in fast paced transactions. Proximity, close-coupled, and vicinity cards are sub-types of contactless cards. Vicinity cards are used in industrial tagging, car-park access, and library book tagging. Contactless cards cannot support encryption techniques and are expensive to manufacture. (more…)

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Mobile IP is becoming more important for the average consumer and for businesses. Mobile IP standards are improving, as are the services offered by service providers. Because of this, more efficient services and applications are available to mobile users. In business, key employees can be kept up to date with critical information, which results in improved customer service and, ultimately, in improved customer relations. Mobile IP allows consumers to communicate and to avail of a variety of services, such as instant messaging and SMS alerts to their cellular phones with, for instance, the latest traffic reports or sports results.

With the development of large open networks – networks with access to the Internet, and other private and public networks – threats to security have increased and more security vulnerabilities have been discovered. The technical knowledge required to hack a network has become more widely available and hacking tools are more user friendly.

Because of the way Mobile IP operates, the transfer of information is vulnerable in terms of security. The registration process in itself is vulnerable because, typically, mobile computers are connected to the network via wireless links. When mobile nodes on foreign networks register with their home networks via wireless links, they are vulnerable to attacks such as passive eavesdropping and active replay. This means that authentication mechanisms in Mobile IP registration need to be particularly strong. For example, service providers need to authenticate messages sent between foreign agents and home agents to ensure only legitimate customers are provided with service and to enable billing.

Threats to Mobile IP

Specific threats to Mobile IP include the following: (more…)

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Mobile IP is a standard communications protocol, developed by the Internet Engineering Task Force (IETF) and designed to allow mobile-device users to move from one network to another while maintaining their permanent IP address.

Mobile IP is an enhancement of the Internet Protocol (IP). It allows for Internet traffic to be forwarded to mobile devices, also called mobile nodes, when they are connecting through networks other than their home network. In wireless computing, Mobile IP is the technology that enables a user to receive information, such as e-mails and files directly to one’s laptop, without the sender’s knowledge of the serving network IP address.

It is predicted that wireless access will soon become the dominant means of connecting to the Internet. As it becomes more common, mobile users will expect similar levels of connectivity and service quality to wireline users, and Internet protocols will need to be further developed to meet the technological challenges ahead. Mobile IP, as it currently stands, presents a problem in terms of performance and scalability. (more…)

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