TCP/IP

- Transmission Control Protocol / Internet ProtocolBy Bradley Mitchell, About.com Guide

See More About:tcpipinternet protocolosi modelDefinition: Transmission Control Protocol (TCP) and Internet Protocol (IP) are two distinct network protocols, technically speaking. TCP and IP are so commonly used together, however, that has become standard terminology to refer to either or both of the protocols.

IP corresponds to the Network layer (Layer 3) in the OSI model, whereas TCP corresponds to the Transport layer (Layer 4) in OSI. In other words, the term refers to network communications where the TCP transport is used to deliver data across IP networks.

The average person on the Internet works in a predominately environment. Web browsers, for example, use to communicate with Web servers.Also Known As: Transmission Control Protocol / Internet ProtocolSuggested ReadingIntroduction to the OSI modelInternet Protocol tutorialMore about Related ArticlesBook Review: Guide by Charles KozierokUbuntu Server Guide - Clearly Explained - Pete LoshinUbuntu Server Guide - IntroductionIntroduction to Linux - Networking Overview

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IP Address Owner

s - Related TopicsHow to Find IP Addresses in Received EmailsHow to Find the IP Address of a Web SiteHow Can the IP Address of a Router Be Determined?Related ArticlesPrivate IP Addresses - Private IP Address RangeWhat Is a Public IP Address?192.168.0.0 - Private IP Address RangeStatic IP Address - Using Static IP Addresses on Private NetworksPrivate IP Address Definition - What is Private IP Address? - Private IP Ad...

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Change the Wi-Fi Channel Number

to Avoid InterferenceAvoid wireless radio interferenceBy Bradley Mitchell, About.com Guide

See More About:wireless signal interference80211b80211gHome wireless networks based on the 802.11b or 802.11g standards transmit their signal in a narrow radio frequency range of 2.4 GHz. Various other electronic devices in a home, such as cordless phones, garage door openers, baby monitors, and microwave ovens, may use this same frequency range. Any such device can interfere with a Wi-Fi home network, slowing down its performance and potentially breaking network connections.

Likewise, the wireless networks of neighbors generally all use the same form of radio signaling. Especially in residences that share walls with each other, interference between different home networks is not uncommon.

The 2.4 GHz Wi-Fi signal range is divided into a number of smaller bands or "channels," similar to television channels. In most countries, Wi-Fi equipment provides a set of available channels to choose from. In the United States, for example, any of the Wi-Fi channels 1 - 11 can be chosen when setting up a wireless LAN (WLAN). Setting this Wi-Fi channel number appropriately provides one way to avoid sources of wireless interference.

Many wireless products in the U.S. ship with a default Wi-Fi channel of 6. If encountering interference from other devices within the home, consider changing the channel up or down to avoid it. Note that all Wi-Fi devices on the network must use the same channel.

Unlike television channels, some Wi-Fi channel numbers overlap with each other. Channel 1 uses the lowest frequency band and each subsequent channel increases the frequency slightly. Therefore, the further apart two channel numbers are, the less the degree of overlap and likelihood of interference. If encountering interference with a neighbor's WLAN, change to a distant channel. Both channels 1 and 11 do not overlap with the default channel 6; use one of these three channels for best results.Suggested ReadingWhat is the Range of a Wi-Fi LAN?Wireless Home Network Security TipsMore About Wi-Fi Home NetworkingRelated Articles802.11n Speed - How Can I Get an 802.11n Wi-Fi Speed Rating of 300 Mbps?What the .1 Means in 5.1, 6.1, or 7.1 Channel Surround SoundUsing Different Wi-Fi ProfilesWi-Fi Power - How Does Wi-Fi Use Affect Computer Battery Life and Power Nee...Holiday Gift Guide for Wireless and Home Computer Networking

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Netgear Router IP Addresses

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What Is the Default IP Address of a Netgear Router?By Bradley Mitchell, About.com Guide

See More About:netgearip addressesQuestion: What Is the Default IP Address of a Netgear Router?Home network routers are designed to use a default IP address when first powered on. This allows you to access the administrative functions for router setup. This IP address is the local / private network address sometimes called the default gateway.Answer: The default IP address of Netgear routers is 192.168.0.1.Note that this address is for the local network only. The Netgear router will obtain another, public IP address when connecting to the Internet.

As an administrator, you can change this default IP address as needed. Changing the router's default IP address may be necessary to avoid conflict with the IP address of an Internet modem or another router already installed on 192.168.0.1.

Some Netgear routers also support a feature that automatically redirects connections to its home page (http://192.168.0.1/) to http://routerlogin.com/. Netgear provides routerlogin.com (and routerlogin.net) as a service that gives router owners an alternative to remembering the IP address of their device.

Suggested ReadingHow to Find a Router's IP AddressHow to Change a Router PasswordHow to Change Router Default SSIDNetgear IP Address - Related TopicsNetgear Router Default PasswordsLinksys Router Default IP AddressRelated Articles192.168.1.254 - Router and Modem Default IP Address192.168.2.1 - Home Network Router Default IP AddressConnect To a Wireless Router - How to Access Wireless Routers for Local Adm...RH340 Default Password - NETGEAR RH340 Default PasswordRH348 Default Password - NETGEAR RH348 Default Password

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IP Address - Conflict

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What Is an IP Address Conflict?By Bradley Mitchell, About.com Guide

See More About:ip addressestcpipQuestion: What Is an IP Address Conflict?Answer: An IP address conflict occurs when two computers on a LAN (local area network) or the Internet have been assigned the same IP address. IP conflicts between two computers normally render either one or both of them unusable for network operations.How IP Address Conflicts HappenTwo computers can acquire conflicting IP addresses in any of several ways: A system administrator assigns two computers on the LAN the same static IP address

A system administrator assigns a computer a static IP address within the local network's DHCP range (dynamic IP range), and the same address is automatically assigned by the local DHCP server.

A malfunction in the network's DHCP server allows the same dynamic address to automatically be assigned to multiple computers.

An Internet Service Provider (ISP) accidentally assigns two customers the same IP address (either statically or dynamically).

A mobile computer is put into standby / hibernate mode and then awakened later.Note that other forms of IP conflicts can also occur on a network. For example, one computer may experience an IP address conflict with itself if that computer is configured with multiple network adapters. System administrators may also create IP conflicts by accidentally connecting two ports of a network switch or router to each other.Recognizing IP Address ConflictsOn most Microsoft Windows computers, if you attempt to set a fixed (static) IP address that is already active on the local network, you will receive the following pop-up error message:The static IP address that was just configured is already in use on the network. Please reconfigure a different IP address.

On newer Microsoft Windows computers having dynamic IP conflicts, you should receive a balloon error message in the Taskbar as soon as the operating system detects the issue:There is an IP address conflict with another system on the network.

Sometimes, especially on older Windows computers, a message similar to the following may instead appear in a pop-up window:The system has detected a conflict for IP address...On Mac or Linux computers, a similar message will normally appear on screen.Resolving IP Address ConflictsTry the following remedies for IP conflicts:

1. For networks where IP addresses are fixed (statically assigned), ensure each local host is configured with a unique IP address.

2. If your computer has a dynamically assigned address, releasing and renewing its IP address can work around IP address conflicts. See also - How to Release / Renew IP Addresses on Windows

3. If your home router is believed to have a faulty DHCP server causing IP conflicts on the home network, upgrading the router firmware may resolve this problem.Suggested ReadingUsing Static IP Addresses on Private NetworksUsing Two Routers on the Same Home NetworkIP Address NotationIP Address Conflicts - Related TopicsWhat's My IP Address?What Is the Default IP Address of a Linksys Router?Working With IP AddressesRelated ArticlesDynamic IP Address Definition - What is Dynamic IP Address?Static IP Address Definition - What is Static IP Address?IP Address - What is an IP Address?IP Address - Computer Network IP AddressesHow To Identify Network Hardware IP Addresses on a Local Network

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Connecting Computers and TVs

Networking your computers and TVs provides the most convenient sharing of multimedia images: does not require connecting a digital camcorder or camera to the TY

can make the necessary connections with either Windows, Mac or Linux computers

with Media Center Extender or similar capability, can direct content from any home computer to the TV

You may also encounter a few challenges and limitations: the screen resolution of older TVs is much lower than modern computer displays - your images and video may appear with lower quality when shown on the television

when using AV cables, you may need to relocate the laptop or PC very close to the television to reach

when using wireless connections, the effective range may be relatively short, depending on the equipment in use, due to the high volume of data involved in digital media

hardware needed, especially the more advanced wireless gear, may be expensive to purchase→ For More Information - Home Networking for TV (Television)Suggested ReadingVIDEO: Connect a Computer to TVConnect Two Home Computers for File SharingHome Networking With A Broadband Router - Related TopicsIPTVHAVA Wi-Fi Remote IPTV ViewerLinksys WMA11B Digital Media AdapterRelated ArticlesCan I Also use an LCD Television as a Computer Monitor?What is a Media Center PC? Learn about Media Center PCsHow to Watch Hulu on Your TV - Tips for Getting Hulu on Your HDTVReview of the Hauppauge WinTV-HVR 950 Hybrid TV StickConnecting Two Computers - When Things Go Wrong

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