What do WEP and WPA mean?

WEP and WPA (along with WPA2) are names for different encryption tools used to secure your wireless connection.

Encryption scrambles the network connection so that no one can listen in to it and look at which web pages you are viewing, for example. WEP stands for Wired Equivalent Privacy, and WPA stands for Wireless Protected Access.

WPA2 is the second version of the WPA standard.

Using some encryption is always better than using none, but WEP is the least secure of these standards, and you should not use it if you can avoid it.

WPA2 is the most secure of the three.

If your wireless card and router support WPA2, that is what you should use when setting up your wireless network.
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What is Port (computer networking)

In the internet protocol suite, a port is an endpoint of communication in an operating system. While the term is also used for female connectors on hardware devices (see computer port), in software it is a logical construct that identifies a specific process or a type of network service. A port is always associated with an IP address of a host and the protocol type of the communication, and thus completes the destination or origination network address of a communication session. A port is identified for each address and protocol by a 16-bit number, commonly known as the port number. For example, an address may be 'protocol: TCP, IP address: 1.2.3.4, port number: 80', which may be written 1.2.3.4:80 when the protocol is known from context. Specific port numbers are often used to identify specific services. _________________________

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In computer networking, localhost is a hostname that means this computer. It is used to access the network services that are running on the host via its loopback network interface. Using the loopback interface bypasses any local network interface hardware. The local loopback mechanism is useful for testing software during development, independently of any networking configurations. For example, if a computer has been configured to provide a website, directing a locally running web browser to http://localhost may display its home page. On most computer systems, localhost resolves to the IP address 127.0.0.1, which is the most commonly used IPv4 loopback address, and to the IPv6 loopback address. _________________________

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A back door is generally a piece of code intentionally left by the developer of the software or firmware that allows access without going through the normal security process. Back doors may also be the result of different malware/virus attacks that leave a method for remote, unsecured access into a device once the malicious code has been executed. _________________________

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