Showing posts with label Computing and Technology. Show all posts
Showing posts with label Computing and Technology. Show all posts

Restore Your Computer's Performance with Windows XP


If your computer seems slower than it used to be, it probably is. My one-year old Dell laptop is much slower now than when it was new. Over time, computers get slower for a variety of reasons: files become disorganized, unnecessary software consumes resources, unused network drives slow startup, or too many programs automatically run at startup. Larger, serious issues can dramatically slow your computer's performance too. You may have a virus or need to troubleshoot problems by clean booting.

Fortunately, Windows XP includes tools to clean your computer and restore its performance. As I write this column, I'll be cleaning up my own computer and explaining how its performance improves. I'll cover Backup, Disk Cleanup, Disk Defragmenter, Add or Remove Programs, and the System Configuration tool.

Back Up First

Back up your computer before you run any system tools or do any troubleshooting. This is not just an over-cautious warning. Some of the steps I recommend in this column can cause pre-existing but hidden problems to surface, which may keep your computer from starting. Windows XP includes Backup, a tool that helps you protect your data.

To open the Backup or Restore Wizard

Click Start, point to All Programs, point to Accessories, point to System Tools, and then click Backup.

For information on how to use this tool, see Ed Bott's column, Backup Made Easy and the Microsoft Knowledge Base article, How to Use Backup to Restore Files and Folders on Your Computer in Windows XP.

Before I make any changes, I'm going to time my computer to see how long it takes to restart. That way I know which of the changes helps the most. My computer took about three minutes to shut down, restart, and then open my e-mail client and browser. Of course, I hope to improve the computer's overall performance, but the time it takes to restart is easiest to measure.

Clear Out Forgotten Programs

The first step in tuning up your computer's performance is to remove any unnecessary programs. I install new programs all the time. Sometimes I'm thrilled with the new program and I continue to use it. Other times, it doesn't do what I hoped, and the program sits on my computer consuming resources and hurting performance.

Follow these steps to remove unneeded programs:

1.

Click Start, and then click Control Panel.

2.

Click Add or Remove Programs.

3.

Scroll through the list and examine each program. Windows XP lists how often you use a program and what day you last started it. As shown in Figure 1, the Age of Mythology Trial is a good candidate for removal from my computer. Though I liked the game, I haven't used it recently and it's consuming a lot of disk space. You shouldn't remove anything labeled as an Update or Hotfix, however, because they improve the security of your computer.

Figure 1: The Add or Remove Programs window

Figure 1: The Add or Remove Programs window.

4.

Click each program you no longer need, click the Remove button, and then follow the prompts to uninstall it.

You may have to restart your computer after removing a program. After your computer restarts, repeat the steps above to remove more programs.

Free Up Wasted Space

Removing unused programs is a great way to free up disk space, which will speed up your computer. Another way to find wasted disk space is to use the Disk Cleanup tool by following these steps:

1.

Open My Computer, right-click Local Disk, and then click Properties.

2.

On the General tab, click the Disk Cleanup button. Disk Cleanup will spend a few minutes examining your disk.

3.

The Disk Cleanup dialog box opens. As you can see in Figure 2, it found almost three gigs of space on my computer that it could free up!

Figure 2: The Disk Cleanup tool

Figure 2: The Disk Cleanup tool.

4.

Select the desired check boxes in the Files to Delete list, and then click OK. Disk Cleanup will spend several minutes clearing space.

5.

If you have more than one hard disk, repeat this process for each hard disk listed in My Computer.

You can save yourself some time by automating the disk cleanup process. For more information, read the Microsoft Knowledge Basic article, How to Automate the Disk Cleanup Tool in Windows XP.

Defragment Your Computer

I hate newspaper articles that start on the front page but continue somewhere in the middle of the newspaper. I could get through the article much faster if it was printed on consecutive pages like a magazine article. Files on your computer can either be fragmented like a newspaper, or unfragmented like a magazine. Over time, more and more files become fragmented. When a file is fragmented, it takes longer for the computer to read it because it has to skip to different sections of the hard disk—just like it takes me a few seconds to find a page in the middle of a newspaper. Figure 3 compares how a computer reads unfragmented and fragmented files.

Figure 3: Fragmented and unfragmented files compared

Figure 3: Fragmented and unfragmented files compared.

You need administrator privileges to defragment a drive or volume. Although fragmentation is complicated, it's easy to defragment your computer by following these steps:

1.

Open My Computer, right-click Local Disk, and then click Properties.

2.

On the Tools tab, click Defragment Now. The Disk Defragmenter opens.

3.

Click your first hard disk, and then click Defragment. As shown in Figure 4, Disk Defragmenter will work for at least several minutes, though it may take several hours.

Figure 4: The Disk Defragmenter tool

Figure 4: The Disk Defragmenter tool.

Free Virus Repair and Prevention Tips

Boot sector virus repair

What is a boot sector? All disks and hard drives are divided into small sectors. The first sector is called the boot sector and contains the Master Boot Record (MBR). The MBR contains the information concerning the location of partitions on the drive and reading of the bootable operating system partition. During the bootup sequence on a DOS-based PC, the BIOS searches for certain system files, IO.SYS and MS-DOS.SYS. When those files have been located, the BIOS then searches for the first sector on that disk or drive and loads the needed Master Boot Record information into memory. The BIOS passes control to a program in the MBR which in turn loads IO.SYS. This latter file is responsible for loading the remainder of the operating system.

What is a boot sector virus? A boot sector virus is one that infects the first sector, i.e. the boot sector, of a floppy disk or hard drive. Boot sector viruses can also infect the MBR. The first PC virus in the wild was Brain, a boot sector virus that exhibited stealth techniques to avoid detection. Brain also changed the volume label of the disk drive.

How to avoid boot sector viruses. Commonly, infected floppies and subsequent boot sector infections result from "shared" diskettes and pirated software applications. It is relatively easy to avoid boot sector viruses. Most are spread when users inadvertently leave floppy disks in the drive - which happen to be infected with a boot sector virus. The next time they boot up their PC, the virus infects the local drive. Most systems allow users to change the boot sequence so that the system always attempts to boot first from the local hard drive (C:\) or CD-ROM drive.

Disinfecting boot sector viruses. Boot sector repair is best accomplished by the use of antivirus software. Because some boot sector viruses encrypt the MBR, improper removal can result in a drive that is inaccessible. However, if you are certain the virus has only affected the boot sector and is not an encrypting virus, the DOS SYS command can be used to restore the first sector. Additionally, the DOS LABEL command can be used to restore a damaged volume label and FDISK /MBR will replace the MBR. None of these methods is recommended, however. Antivirus software remains the best tool for cleanly and accuarately removing boot sector viruses with minimal threat to data and files.

Creating a system disk. When disinfecting a boot sector virus, the system should always be booted from a known clean system disk. On a DOS-based PC, a bootable system disk can be created on a clean system running the exact same version of DOS as the infected PC. From a DOS prompt, type:

    SYS C:\ A:\

and press enter. This will copy the system files from the local hard drive (C:\) to the floppy drive (A:\).

If the disk has not been formatted, the use of FORMAT /S will format the disk and transfer the necessary system files. On Windows 3.1x systems, the disk should be created as described above for DOS-based PC's. On Windows 95/98/NT systems, click Start | Settings | Control Panel | Add/Remove Programs and choose the Startup Disk tab. Then click on "Create Disk". Windows 2000 users should insert the Windows 2000 CD-ROM into the CD-ROM drive, click Start | Run and type the name of the drive followed by bootdisk\makeboot a: and then click OK. For example:

    d:\bootdisk\makeboot a:

Follow the screen prompts to finish creating the bootable system disk. In all cases, after the creation of the bootable system disk, the disk should be write protected to avoid infection.

Wireless Product Equipment - Network Routers, Access Points, Adapters and More

Wireless Game Adapters

Linksys WGA54G Wireless Game Adapter

Linksys WGA54G Wireless Game Adapter

linksys.com

A wireless game adapter connects a video game console to a Wi-Fi home network to enable Internet or head-to-head LAN gaming. Wireless game adapters for home networks are available in both 802.11b and 802.11g varieties. An example of an 802.11g wireless game adapter appears above, the Linksys WGA54G (compare prices).

Wireless game adapters can be connected either to a wireless router using an Ethernet cable (for best reliability and performance) or over Wi-Fi (for greater reach and convenience). Wireless game adapter products include setup software on a CD-ROM that must be installed on one computer to complete initial configuration of the device. As with generic network adapters, wireless game adapters must be configured with the correct network name (SSID) and encryption setting.

Wireless Internet Video Cameras

Linksys WVC54G Wireless Internet Camera

Linksys WVC54G Wireless Internet Video Camera

linksys.com
A wireless Internet video camera allows video (and sometimes audio) data to be captured and transmitted across a WiFi computer network. Wireless Internet video cameras are available in both 802.11b and 802.11g varieties. The Linksys WVC54G (compare prices) 802.11g wireless camera is shown above.

Wireless Internet video cameras work by serving up data streams to any computer that connects to them. Cameras like the one above contain a built in Web server. Computers connect to the camera using either a standard Web browser or through a special client user interface provided on CD-ROM with the product. With proper security information, video streams from these cameras can also be viewed across the Internet from authorized computers.

Wi-Fi Internet video cameras can be connected to a wireless router using either an Ethernet cable or wirelessly. These products include setup software on a CD-ROM that must be installed on one computer to complete initial Wi-Fi configuration of the device.

Features that distinguish different wireless Internet video cameras from each other include:

  • resolution of the captured video images (for example, 320x240 pixel, 640x480 pixel, and other image sizes)
  • motion sensors, and the ability to send email alerts when new activity is detected and captured
  • ability to timestamp images
  • built-in microphones and/or jacks for external microphones, for audio support
  • types of WiFi security supported, such as WEP or WAP

Wireless Range Extender

Linksys WRE54G Wireless Range Expander

Linksys WRE54G Wireless Range Expander

Linksys WRE54G Wireless Range Expander
A wireless range extender increases the distance over which a WLAN signal can spread, overcoming obstacles and enhancing overall network signal quality. Several different forms of wireless range extenders are available. These products are sometimes called "range expanders" or "signal boosters." The Linksys WRE54G (compare prices) 802.11g Wireless Range Expander is shown above.

A wireless range extender works as a relay or network repeater, picking up and reflecting WiFi signals from a network's base router or access point. The network performance of devices connected through a range extender will generally be lower than if they were connected directly to the primary base station.

A wireless range extender connects wirelessly to a WiFi router or access point. However, due to the nature of this technology, most wireless range extenders work only with a limited set of other equipment. Check the manufacturer's specifications carefully for compatiblity information.


Free Virus Removal Tools


Getting a virus on your system is frustrating to say the least, and can be hazardous to the health of your computer. Indeed, today's malicious software can even steal your identity and wreck your hard-earned credit rating. To help fight back, here's a list of free tools, tips, and tricks to get rid of viruses and keep them from getting back on your system.

Free Virus Removal Tools
Sure the antivirus vendors want to make money, but if you ever get the chance to meet one of their virus researchers, you'll find their real motivation is to protect users. As corny as that may sound, it's true. That's why when stubborn or fast-spreading infectors are discovered, antivirus vendors release special tools to remove the malware - and give the tools away free. It's no substitute for installed antivirus software, but if you're already infected and in a pinch, it's the next best thing to, well, installed antivirus software.

Create a Free F-Prot Rescue CD - FRISK Software - one of the oldest and most respected antivirus companies (and the secret sauce hidden in a lot of antivirus products being sold under other names)- offers their F-Prot for DOS scanner free for personal use.
  • It's ideal for making a rescue CD so you can scan the system from a clean boot.
  • McAfee AVERT Stinger - McAfee AVERT Labs offers a handy utility to run in Windows that cleans some of the more common malware.
  • Microsoft Malicious Software Removal Tool - Microsoft offers a free tool to remove prevalent software active on the system. The tool is offered via Automatic Updates, Windows Updates, and Microsoft Updates, or it can be manually downloaded using the provided link.
  • Symantec Virus Removal Tools - Antivirus vendor Symantec offers a wide range of free cleaning tools for individual malware removal.
  • F-Secure Virus Removal Tools - Another good choice for individual malware removal are these free tools from F-Secure.
  • For a second opinion scan or a not-so-stubborn infector, try one of the Top Online Scanners

Top 9 Windows Antivirus

Antivirus software is must-have protection. This review picks the best antivirus software based on its virus detection abilities, features, and breadth of protection. Whether you're seeking total system coverage or an ala carte solution, each of the following products provides superb virus protection for Windows-based PCs. Because every system is unique, evaluate several of these antivirus products to find the software best suited for your PC and your level of experience.

1. Avira AntiVir PersonalEdition Premium

AntiVir is a consistent leader in independent antivirus tests. Avira's AntiVir PersonalEdition Premium is a low-impact, easy to use virus scanner that also includes rootkit detection and phishing protection. Five euros of each purchase is automatically donated to the Auerbach Foundation, a non-profit that supports various charity and community-related services. AntiVir PersonalEdition Premium should be used in conjunction with a firewall.
Buy Direct

2. Kaspersky Anti-Virus Personal

Kaspersky Anti-Virus Personal offers excellent antivirus protection, perhaps unsurpassed in its ability to unpack and scan compressed files - something that trips up a lot of other vendors. Should be used in conjunction with a firewall.

3. BitDefender Antivirus Plus

Softwin's BitDefender Professional protects against viruses, spyware, and instant messaging threats, as well as offering firewall rules to block undesirable traffic and a privacy gateway to keep your identity and preferences private while surfing the Internet.

4. McAfee VirusScan Plus

McAfee VirusScan Plus is an ideal candidate for those seeking an antivirus/firewall combination without all the bloat of traditional Internet security suites. McAfee VirusScan Plus makes an easy job of removing adware and spyware, something not all antivirus products deliver.

5. Panda Antivirus 2007

Panda Antivirus 2007 combines antivirus, antispyware, and antiphishing with its highly touted behavior-based TruPrevent Technology. License covers use on two computers and includes free tech support via email (telephone support options are also available).

6. F-PROT Antivirus

F-PROT Antivirus for Windows offers a feature that's increasingly harder to find - it includes a command-line scanner that can be used to create a rescue CD for scanning the system in Safe Mode. This is a particularly effective way to remove stubborn resuscitators. Firewall not included.

7. G Data AntiVirusKit (AVK)

AntiVirusKit (AVK) provides a double layer of protection, bundling two of the best antivirus engines - Kaspersky and BitDefender - under a single, easy-to-use console. Like Nod32, you'll also want to bolster G Data's AVK with a firewall.

8. AVG Anti-Malware

AVG Anti-Malware combines traditional virus protection with adware and spyware scanning, in a low impact footprint ideal for resource-strained PCs or those who just want the best performance possible out of their computers. Free tech support is available via email and the standard license includes two years of protection. Should be used in conjunction with a firewall.

9. Eset Nod32

Nod32 features a small footprint, low performance hit, and fast scan speeds, providing focused virus protection ideal for gamers or those with an older PC. Should be used in conjunction with a firewall.

access point, wireless

Definition: Wireless access points (APs or WAPs) are specially configured nodes on wireless local area networks (WLANs). Access points act as a central transmitter and receiver of WLAN radio signals.

Access points used in home or small business networks are generally small, dedicated hardware devices featuring a built-in network adapter, antenna, and radio transmitter. Access points support Wi-Fi wireless communication standards.

Although very small WLANs can function without access points in so-called "ad hoc" or peer-to-peer mode, access points support "infrastructure" mode. This mode bridges WLANs with a wired Ethernet LAN and also scales the network to support more clients. Older and base model access points allowed a maximum of only 10 or 20 clients; many newer access points support up to 255 clients.

Wireless Product Equipment - Network Routers, Access Points, Adapters and More


Wireless Access Points

Linksys WAP54G Wireless Access Point
A wireless access point (sometimes called an "AP" or "WAP") serves to join or "bridge" wireless clients to a wired Ethernet network. Access points centralize all WiFi clients on a local network in so-called "infrastructure" mode. An access point in turn may connect to another access point, or to a wired Ethernet router.

Wireless access points are commonly used in large office buildings to create one wireless local area network (WLAN) that spans a large area. Each access point typically supports up to 255 client computers. By connecting access points to each other, local networks having thousands of access points can be created. Client computers may move or "roam" between each of these access points as needed.

In home networking, wireless access points can be used to extend an existing home network based on a wired broadband router. The access point connects to the broadband router, allowing wireless clients to join the home network without needing to rewire or re-configure the Ethernet connections.

As illustrated by the Linksys WAP54G (compare prices) shown above, wireless access points appear physically similar to wireless routers. Wireless routers actually contain a wireless access point as part of their overall package. Like wireless routers, access points are available with support for 802.11a, 802.11b, 802.11g or combinations.

Wireless Network Adapters

Linksys WPC54G Wireless Network Adapter
A wireless network adapter allows a computing device to join a wireless LAN. Wireless network adapters contain a built-in radio transmitter and receiver. Each adapter supports one or more of the 802.11a, 802.11b, or 802.11g Wi-Fi standards.

Wireless network adapters also exist in several different form factors. Traditional PCI wireless adapters are add-in cards designed for installation inside a desktop computer having a PCI bus. USB wireless adapters connect to the external USB port of a computer. Finally, so-called PC Card or PCMCIA wireless adapters insert into a narrow open bay on a notebook computer.

One example of a PC Card wireless adapter, the Linksys WPC54G (compare prices) is shown above. Each type of wireless network adapter is small, generally less than 6 inches (0.15 m) long. Each provides equivalent wireless capability according to the Wi-Fi standard it supports.

Some notebook computers are now manufactured with bulit-in wireless networking. Small chips inside the computer provide the equivalent functions of a network adapter. These computers obviously do not require separate installation of a separate wireless network adapter.


Wireless Hotspots


Wireless hotspots provide Internet access using Wi-Fi access points installed in airports, hotels, and other public places. To provide Internet access in public places, a hotspot manages local area Wi-Fi connections through a wireless access point.
What Is Hotspot

Definition: A hotspot is any location where Wi-Fi network access (usually Internet access) is made publicly available. You can often find hotspots in airports, hotels, coffee shops, and other places where business people tend to congregate. Hotspots are considered a valuable productivity tool for business travelers and other frequent users of network services.

Technically speaking, hotspots consist of one or several wireless access points installed inside buildngs and/or adjoining outdoor areas. These APs are typically networked to printers and/or a shared high-speed Internet connection. Some hotspots require special application software be installed on the Wi-Fi client, primarily for billing and security purposes, but others require no configuration other than knowledge of the network name (SSID).

Wireless service providers like T-Mobile generally own and maintain hotspots. Hobbyists sometimes setup hotspots as well, often for non-profit purposes. The majority of hotspots require payment of hourly, daily, monthly, or other subscription fees.

Hotspot providers strive to make connecting Wi-Fi clients as simple and secure as possible. However, being public, hotspots generally provide less secure Internet connections than do other wireless business networks.

Wi-Fi Hotspots

A Wi-Fi hotspot is a wireless access point provides Internet access to wireless network devices in public locations such as downtown centers, cafes, airports and hotels. Businesses and schools are incresaingly using Wi-Fi hotspots for their internal (intranet) networks. Home wireless networks also use similar Wi-Fi technology.

Requirements to Use Wi-Fi Hotspots

Computers (and other devices) connect to hotspots using a Wi-Fi network adapter. Newer laptop computers contain built-in adapters, but most other computers do not. Wi-Fi network adapters can be purchased and installed separately. Depending on the type of computer and personal preferences, USB, PC Card, ExpressCard, or even PCI card adapters can be used.

Public Wi-Fi hotspots normally require a paid subscription. The sign-up process involves providing credit card information online or by phone and choosing a service plan. Some service providers offer plans that work at thousands of hotspots throughout the country.

A few pieces of technical information are also required to access Wi-Fi hotspots. The network name (also called SSID) distinguishes hotspot networks from each other. Encryption keys (a long series of letters and numbers) scramble the network traffic to and from a hotspot; most businesses require these as well. Service providers supply this "profile" information for their hotspots.

Finding Wi-Fi Hotspots

Computers automatically scan for hotspots within range of their wireless signal. The scan identifies the network name (SSID) of the hotspot allowing the computer to initiate a connection.

Instead of using a computer to find hotspots, some people prefer to use a separate gadget called a "Wi-Fi finder." These small devices scan for hotspot signals similarly to computers, and many provide some indication of signal strength to help pinpoint their exact location.

Before traveling to a far-away place, the location of Wi-Fi hotspots can be found using online wireless hotspot finder services.

Connect To Wi-Fi Hotspots

The process for connecting to a Wi-Fi hotspot works similarly on home, business and public wireless networks. With the profile (network name and encryption settings) applied on the wireless network adapter, you initiate the connection from your computer operating system (or software that was supplied with the network adapter). Paid or restricted hotspot services will require you to log in with a username and password the first time you access the Internet.

Dangers of Wi-Fi Hotspots

Although few incidents of hotspot security issues are reported in the press, many people remain skeptical of their safety. Some caution is justified as a hacker with good technical skills can break into your computer through a hotspot and potentially access your personal data.

Taking a few basic precautions will ensure reasonable safety when using Wi-Fi hotspots. First, research the public hotspot service providers and choose only reputable ones who use strong security settings on their networks. Next, ensure you do not accidentally connect to non-preferred hotspots by checking your computer's settings. Finally, be aware of your surroundings and watch for suspicious individuals in the vicinity who may be reading your screen or even plotting to steal your computer.




Wired vs Wireless Networking

Computer networks for the home and small business can be built using either wired or wireless technology. Wired Ethernet has been the traditional choice in homes, but Wi-Fi wireless technologies are gaining ground fast. Both wired and wireless can claim advantages over the other; both represent viable options for home and other local area networks (LANs).

Below we compare wired and wireless networking in five key areas:

  • ease of installation
  • total cost
  • reliability
  • performance
  • security

About Wired LANs

Wired LANs use Ethernet cables and network adapters. Although two computers can be directly wired to each other using an Ethernet crossover cable, wired LANs generally also require central devices like hubs, switches, or routers to accommodate more computers.

For dial-up connections to the Internet, the computer hosting the modem must run Internet Connection Sharing or similar software to share the connection with all other computers on the LAN. Broadband routers allow easier sharing of cable modem or DSL Internet connections, plus they often include built-in firewall support.

Installation

Ethernet cables must be run from each computer to another computer or to the central device. It can be time-consuming and difficult to run cables under the floor or through walls, especially when computers sit in different rooms. Some newer homes are pre-wired with CAT5 cable, greatly simplifying the cabling process and minimizing unsightly cable runs.

The correct cabling configuration for a wired LAN varies depending on the mix of devices, the type of Internet connection, and whether internal or external modems are used. However, none of these options pose any more difficulty than, for example, wiring a home theater system.

After hardware installation, the remaining steps in configuring either wired or wireless LANs do not differ much. Both rely on standard Internet Protocol and network operating system configuration options. Laptops and other portable devices often enjoy greater mobility in wireless home network installations (at least for as long as their batteries allow).

Cost

Ethernet cables, hubs and switches are very inexpensive. Some connection sharing software packages, like ICS, are free; some cost a nominal fee. Broadband routers cost more, but these are optional components of a wired LAN, and their higher cost is offset by the benefit of easier installation and built-in security features.

Reliability

Ethernet cables, hubs and switches are extremely reliable, mainly because manufacturers have been continually improving Ethernet technology over several decades. Loose cables likely remain the single most common and annoying source of failure in a wired network. When installing a wired LAN or moving any of the components later, be sure to carefully check the cable connections.

Broadband routers have also suffered from some reliability problems in the past. Unlike other Ethernet gear, these products are relatively new, multi-function devices. Broadband routers have matured over the past several years and their reliability has improved greatly.

Performance

Wired LANs offer superior performance. Traditional Ethernet connections offer only 10 Mbps bandwidth, but 100 Mbps Fast Ethernet technology costs little more and is readily available. Although 100 Mbps represents a theoretical maximum performance never really achieved in practice, Fast Ethernet should be sufficient for home file sharing, gaming, and high-speed Internet access for many years into the future.

Wired LANs utilizing hubs can suffer performance slowdown if computers heavily utilize the network simultaneously. Use Ethernet switches instead of hubs to avoid this problem; a switch costs little more than a hub.

Security

For any wired LAN connected to the Internet, firewalls are the primary security consideration. Wired Ethernet hubs and switches do not support firewalls. However, firewall software products like ZoneAlarm can be installed on the computers themselves. Broadband routers offer equivalent firewall capability built into the device, configurable through its own software.

Communication and Networks


Wireless & Networking

Networking With A Router Using a router on broadband and/or wireless home networks

A network router is a small electronic device that allows you build a home network simply. The home router serves as the core or "centerpiece" of the network to which computers, printers and other devices can be connected. Networking with a router helps you to (for example):

  • share files between computers
  • share an Internet connection between computers
  • share a printer
  • connect your game console or other home entertainment equipment to the Internet
Routers are not necessarily required to build a network. For example, you can connect two computers directly to each other with just a cable (or without wires in some cases). Home routers offer convenience and easier maintenance as your network grows.

Choosing a Network Router

You can choose from among several different types of home network router products. The two most common types in popular usage are the 802.11b and 802.11g WiFi models. 802.11g is the newer technology, but 802.11b routers often can do the job for an even lower cost.

Installing a Network Router

Network routers receive their power from an ordinary home electrical socket. When powered on, lights (LEDs) signify the unit is operating.

Network routers must be carefully configured when they are first installed. Like computers and other devices on the home network, routers must be set up with IP addresses. Routers also offer optional (but strongly recommended) security features.

Routers contain built-in software to enable setup. You access this software through your Web browser on any computer connected to the router.