Tag: WiFi wireless

Netgear DG834G ADSL2 wireless router

Are you thinking of moving away from the single desktop PC or laptop connected to the broadband Internet via a single-port modem using an Ethernet cable? Are you planning to head down the path of the “new computing environment” where you use a laptop computer that you can take around the house yet still remain connected to the Internet? Do network-enabled gadgets like Internet radios or WiFi digital picture frames appeal to you?

If so, you will need to buy and install a wireless router and these can be purchased for a small amount of money, typically under AUD$110 or US$60. This may also appeal to people who may want to “equip” their young-adult child who is leaving the family nest with one of these devices as well as a modest-specification laptop to study and “Facebook” on. In fact these routers can help you with saving money in the long term on your Internet connection especially if you aren’t interested in a “single-pipe triple-play” communications service.

The advice provided here will differ over time as manufacturers “push” features down to the entry-level wireless routers as newer technologies and standards are introduced to the home network.

What does the entry-level wireless router offer

Broadband (Internet) / WAN connection

Most entry-level wireless routers offer a connection for a wireline Internet service on the “Internet” or “broadband” side of the connection. This typically is in the form of an Ethernet connection marked as “Internet” or an integrated ADSL2 modem. They will support the access-authentication-accounting protocols being deployed by most of the Internet service providers including the big names in the marketplace.

The Ethernet-ended “broadband” routers will be primarily useful for people who sign up to Internet service where you have to use customer-premises equipment supplied by the Internet service provider. Such services typically include cable Internet (whether through the cable-TV set-top box or a separate modem), some ADSL Internet services, “next-generation Internet” such as fibre-optic services, or wireless-broadband that isn’t in the form of a USB-connected modem. If you do want to use regular ADSL service with these routers, you would have to purchase an ADSL modem that can work as a “bridge” (in the case of “wires-only” / “BYO modem” service) or configure supplier-provided ADSL equipment to work as such.

Saving money on setting up your Internet connection

Most ISPs, cable companies and telephone companies offer wireless home gateway devices at highly-inflated prices and are often set up so you don’t have much control over the device. In a lot of cases that I have observed, you may end up with equipment that. for example, won’t work properly with Skype or MSN Messenger because it won’t support the automatic port-forwarding functionality provided by UPnP IGD that is common with nearly all of the entry-level routers. As well, I have observed cases where the ISP-supplied wireless home gateway simply provides substandard performance or unreliable service; or simply is “technologically backward”.

If you intend to set up an ADSL-based Internet service, you buy a wireless router with an integrated ADSL2 modem; as well as the correct number of ADSL line or wallplate splitters for each phone socket in your home. Then you subscribe to an ADSL plan with a “wires-only” or “BYO modem” hardware option where you supply the customer-premises equipment i.e. the ADSL modem.

If you are setting up a cable-Internet service or similar service, you just need to purchase a “broadband” router with an Ethernet port for the Internet connection. Then you have the ISP who provides cable Internet provide you a cable modem with a single Ethernet port rather than their heavily-promoted wireless cable routers.  Your broadband bill will only reflect the cost of the single-port cable modem in the equipment tab.

Local network connection

The entry-level wireless router should have 4 Ethernet ports for use in connecting network hardware that uses Ethernet sockets. This also comes in handy with HomePlug powerline connections because you can connect your HomePlug-Ethernet bridge to one of these sockets and use the AC wiring as part of your home network.

Most of these units will have at least 802.11g WPA2 WiFi as their wireless connectivity, with some having 2.4GHz single-band 802.11n WPA2 WiFi providing this function. It may be preferable to go for a unit that supports WPS “quick-setup” connectivity so you can avoid frustration with setting up a secure wireless network. Some of these routers will use an integrated aerial while others will use one external aerial or, in some cases, two external aerials set up in “aerial-diversity” mode. The RF coverage for this network may suit the typical suburban house with timber or plasterboard interior walls based on a timber frame.

Functionality

Most of these routers will offer UPnP IGD functionality which allows programs like games and instant-messaging programs to establish links to the outside network without user intervention.

An increasing number of these routers will be equipped with a USB port that can be used for sharing peripherals over the home network. The applications that might be made available with this port will typically be printer sharing or file-server functionality using standard protocols and some of these routers may offer the ability to share a wireless-broadband modem as an Internet connection. But beware of those routers that use the port for “USB-over-IP” peripheral sharing where you have to run a “USB-over-IP” driver on each computer. Here, you would be limited to one computer being able to use the device at a time.

Best placement

These routers would suit households who are setting up their “new computing environment” with a laptop as their primary computer or are establishing their home network for the first time. This also includes people who may use a desktop computer connected to the unit via Ethernet and want to have a WiFi network segment for devices like electronic picture frames and Internet radios.

They may also suit secondary-home locations like holiday houses or city flats where you may not be doing much high-end Internet use like gaming.

If you do upgrade this router to a better unit, you can keep these units as a secondary wireless access point once you disable DHCP server and UPnP IGD functionality and allocate them an IP address within the same IP range as the router that you upgrade to has for the local network. Then you connect the router to the new network via the LAN ports. This can come in handy in the form of a dedicated WiFi-G (802.11g) network segment for a network that is moving to WiFi-N (802.11n) or simply as an extension access point for a WiFi-G network.

I wouldn’t recommend these routers as the network-Internet “edge” for small-business mission-critical use because of the inability to support high data throughput and mission-critical reliability. Nor would I recommend them for serious gamers who demand proper latency for their Internet fragfests.

Conclusion

Once you establish your first home network with an entry-level wireless router, you will wonder how you existed with the way you used the Internet before that.

There have been some significant advances in Windows 7 that benefit the small business and the mobile laptop users. This includes people who use their computers for both their work use and home / community use.

Location Aware Printing for “work-home” laptops

If you run Windows 7 Professional or above on your laptop, this operating system has another feature to support the “work-home” laptop. It is in the form of “Location Aware Printing” where the default printer is determined based on which network the computer is connected to. The network can be determined by factors like the domain Windows is associated with, the SSID of a wireless network or the MAC of the Internet Gateway or DHCP Server that it gets its IP address from.

The printer can be a network printer that exists on the network like the HP OfficeJet at your workplace or your Epson WiFi-enabled all-in-one at home, a locally-connected printer like your Canon portable USB printer or a software-based virtual printer like your fax software’s “print-to-fax” function or “print-to-PDF” software.

At the moment, there isn’t ready support for handling location-aware printing in locations where there are many printers in the same facility, such as the typical workplace or educational institution with its many rooms.

Inherent support for mobile broadband services

Windows 7 has inherent support for 3G wireless broadband services thus eliminating the need to run operator-provided software to use the 3G modem. It also caters for laptops that have integrated 3G modems, which is a feature becoming more common with units that are supplied through mobile-phone outlets. In some cases, you may not need to install any software provided by the 3G provider to use wireless broadband Internet service.

This is similar to when Microsoft implemented Dial Up Networking in Windows 95 and users didn’t have to run any other software to get online with their dial-up Internet service.

Wi-Fi Wireless Flexibility for the business partner and hotspot surfer

Windows 7 has improved the Wi-Fi wireless infrastructure thus allowing a Wi-Fi equipped computer with an appropriate hardware driver for its wireless card to do more tricks. It can become a wireless-wireless LAN bridge which can allow for such things as running Wi-Fi devices that can’t go beyond regular WPA2-PSK authentication and don’t have an easy-to-use Web browser with networks that implement WPA2-Enterprise authentication at workplaces or Web-based authentication at hotspots. A good use for this could be for a business partner to take pictures with his Wi-Fi digital camera and upload them to his laptop or a site worker who wants to play his Roberts Stream 202 Internet radio at a wireless hotspot just by using his laptop (which will alert him to new work) as a gateway. It can also allow for “bonding” of multiple Wi-Fi signals for greater throughput, which can come in handy with multi-access-point networks.

Improved business network functionality

The Windows 7 Professional or Ultimate computer has improved business network functionality, which can come in handy with corporate or business-partner networks. One feature that I like is “network-specific” security that accounts for VPN and DirectAccess network setups. Here, you can set up a “domain-driven” business network profile for the VPN tunnel while you have a “private-network” security rule that applies to your home network or a “public-network” security rule that applies to public networks like wireless hotspots. This still allows business-driven network tools like system management tools or desktop-based MIS “dashboards” to operate “through the tunnel” with your computer being secure enough for the network you are in.

Speaking of DirectAccess, this is an improved IPv6-IPSec VPN replacement provided with Windows 7 Ultimate that does away with the need for extra weight associated with a lot of VPN software. The software sets up a separate IPv6 path to the DirectAccess server that your employer or business partner provides and makes the access to business resources more transparent. This function will require the use of a Windows Server 2008 R2 box installed at the workplace by your employer or IT contractor and your computer to run Windows 7 Ultimate.

Conclusion

This series of Windows 7 articles shows how your Windows-based computer and network can be improved when you deploy Windows 7.

I have tried to connect my Nokia N85 mobile phone and a Kogan Internet radio (which is on loan for an upcoming review) with a 2007-era Draytek VPN-endpoint router used as our household’s Internet “edge”. But what would happen is that I would supply the correct WPA-PSK passphrase and it would not admit the device. It would admit Apple MacOS X and iPhone equipment as well as Windows computers without a hitch. The problem was that the router was on a WEP-WPA compatibility mode which you may have set up for when not many embedded WiFi network clients supported WPA out-of-the-box.

A good idea would be to make sure your router operates in WPA security mode. This is to make sure all your WPA clients associate properly and quickly when you give them the WPA-PSK passphrase and your network is also secure to the full extent of the WPA standard.

Blogs and News Articles

Wi-Fi Alliance Peers into the Future with Ad Hoc Replacement | Wi-Fi Net News

Wi-Fi Gets Even Better | Wi-Fi Planet

Wi-fi to get a whole lot better | BBC News – Technology

Wi-Fi Direct : un sérieux concurrent pour le Bluetooth | DegroupNews (France)

From the horse’s mouth

http://www.wi-fi.org/news_articles.php?f=media_news&news_id=909

My comments

A while ago, I had mentioned in my blog about Intel and Ozmo designing chipsets that support a Wi-Fi (802.11a/b/g/n) personal area network. As well, Microsoft had built support for this kind of activity in to Windows 7 so the operating system can manage these networks if the computer’s chipset has inherent support for this. Now, the Wi-Fi Alliance are defining the “Wi-Fi Direct” standard that allows the establishment of these personal-area networks. They have also said that the “Wi-Fi Direct” personal-area network can be catered for on some existing equipment through the use of a driver or firmware update downloaded from the manufacturer’s site.

Wi-Fi Personal-Area Network concept diagram

A Wi-Fi personal-area network is based around a computer, typically a laptop general-purpose computer, providing a single low-power Wi-Fi service set for a small number of devices while being able to link with an existing Wi-Fi service set using the same Wi-Fi networking chipset. The computer is essentially acting as though it is a wireless router with a Wi-Fi backhaul.

One main near-term benefit of operating a Wi-Fi personal-area network is to use a Wi-Fi-enabled device that doesn’t have the full screen, keyboard and Web browser, like a digital camera or Internet radio at most wireless hotspots which typically require you to establish your session through a Web page. Similarly, you can do network-based activities like transfer files, make your music library available to your DLNA-capable media equipment or engage in multi-player multi-machine gaming while using a public Wi-Fi network like a wireless hotspot.

The main benefit of this method beyond using the classic “Ad-hoc” mode that is part of the 802.11a/b/g/n standards. The “ad-hoc” setup often provided poor security and was very unstable, especially if it was being used to transfer large amounts of data like files between colleagues’ laptop computers.

This technology has also been designed to suit all classes of network deployment, ranging from home and small-business networks to large corporation and government networks. The needs of a large corporation or government department with sensitive intellectual assets have been taken care of including the ability for the access points in these networks to detect Wi-Fi Direct networks and, where policy dictates, to shut down these networks. There is only one security fear that I have in that the technology could be used to create an “evil-twin” rogue access point at a wireless hotspot. The way I would mitigate this problem would be to limit the power of a Wi-Fi Direct network and give hotspots the ability to detect these networks. Further still, I would support the use of SSL-style verification mechanisms being part of the SSID beacons in enterprise and hotspot networks as mentioned in my article on keeping the WiFi public hotspot industry safe.

Some of the computing press see the technology as a competitor to Bluetooth especially when it comes to linking devices with general-purpose computers. This is although Bluetooth have established small-size low-power chipsets for integration into peripheral devices like headsets and mice. It may also be seen as a chance for companies to work on low-power small-size Wi-Fi radio chips for use in these kind of devices, which can also benefit devices that deal with Wi-Fi on a LAN perspective like Internet-enabled consumer electronics.

Also, if the pundits see that this technology is going to work for human-interface devices (keyboards, mice, remote controls, game controllers, etc) and similar applications, they need to have this concept developed and proven across an IP subnet. This is because Wi-Fi is simply being used as one of many physical network media for IP networks; and there haven’t been any device classes and application-layer protocols established for human-interface devices, sensors and similar applications to operate across these networks.

Once this technology is worked out properly, I would see Wi-Fi Direct being an enabler for network activities involving Internet-based consumer electronics or working alongside a colleague rather than being another wireless medium for keyboards and mice.

 Withings – Home Page

Why Fit | Wi-Fi Networking News

WiFi-enabled bathroom scale slides into USA, overweight Yanks sluggishly back away | Engadget

My comments on this next step for the home network

When I was young, the typical kind of bathroom scales that were commonly available were of a mechanical type that needed adjustment before anyone could be weighed. As well, a person who didn’t have good eyesight couldn’t easily weigh themselves and had to require someone else to read the weight. There was a trickle of electronic scales but these were very expensive and mainly available through selected mail-order catalog stores rather than the homewares departments of a typical department store.

In the last 20 years, we have seen the arrival of cost-effective electronic bathroom scales that had a large digital display or, in some applications, voice synthesis; didn’t need to be adjusted every time each person weighed in and could allow a person with limited eyesight to weigh themselves. These units are becoming available through most homewares stores and departments.

This bathroom scales is the first unit that does more than the typical bathroom scales can do. It can measure fat mass and body mass index; but works with a Web portal that keeps record of this data for up to 8 members of a household. The data is transmitted to the portal using the WPA-secured Wi-Fi segment of your home network and is kept in a secure manner on the portal. As well, there is a local application available for the Apple iPhone / iPod Touch platform which provides the data in a manner optimised to that handheld device. But the Web dashboard can be visited through a regular Web browser setup.

From what I have seen of this device, there isn’t anything about what is involved in integrating the scales in to a secure wireless network. As far as I am concerned, these are the kind of devices that WPS-Push-Button-Connect is made for. Another thing I would like to see for these scales is an API being available so that one can write software such as integration into various desktop, network and Internet health-records programs.

As well, this has actually been the first kind of personal-health device available on the market that is able to be part of a home network. It could pave the way for more of these networked health-measurement devices to be made available for home-network use.

Peugeot intègre le Wi-Fi dans ses véhicules | DegroupNews (French language)

Chrysler confirms in-car Wi-Fi coming next year | Engadget

BMW’s ConnectedDrive brings the whole internet to your car… on EDGE | Engadget

There is a new trend concerning the small network in that the car will have its own IP-based network with a link to the Internet. This has been brought about by manufacturers making WiFi “edge” routers with a 3G wireless link on the Internet side for installation in vehicles. Similarly vehicle builders like BMW, Chrysler and Peugeot are using this feature as a product differentiator in some of their vehicle models.

But what use are these devices?

Primarily these devices provide Internet access to passengers in minivans, limos and the like; and some bus fleets are taking this further for provision of Internet access to their premium routes. Some people may also think that these routers may have the same appeal as the “component-look” car stereo systems of the late ‘70s and early ‘80s; where they only appealed to young men who were customising cars and vans in order to impress others.

What could they offer

Like the typical home Internet-edge router, all of these routers offer Ethernet and WiFi for the local network connection, which means that car devices can be directly connected to these Internet gateways. This can lead to online applications being made available to integrated or aftermarket-installed equipment which is being considered as sophisticated as a typical personal computer.

Ethernet port on the car stereo

A car stereo system could have an Ethernet port and support the same kind of network media services as some of the in-home entertainment systems offer. One application could be Internet radio functionality, where the set could have access to the Frontier Platform, Reciva or vTuner Internet-radio directories; and be able to pull in Internet radio from around the globe. An idea that may come to mind is the concept of young men “cruising” along Chapel Street in South Yarra; Campbell Parade in Bondi; Surfers Paradise or other “show-off” streets in Australia or coastal USA with the dance grooves from Heart London’s “Club Classics” program thumping out of the “subs and splits” in their souped-up machines during a special UK long weekend. Another function would be to support the “visual radio” platform that is part of most mobile-phone FM-radio implementations.

Another more interesting application is an in-car DLNA media network. The 3G WiFi router could work as a WiFi client when, in the presence of the home network, cause syncing of content between the home DLNA media network’s server and a hard disk built in to the car stereo. This allows for newly-added music content from the home network and up-to-date podcasts to be available in the car.

Similarly, there could be the ability to play content held on a DLNA-capable WiFi-enabled mobile phone or portable media player through the car speakers. As well, a small NAS like the Thecus N0204 miniNAS which I have mentioned about in this blog could be shoehorned to work from a car’s power supply and become a DLNA-enabled media storage unit for the car.

This functionality can be extended to the back seat in the form of access to newer video content from the home network or access to online video content to the back screens. As well, the vehicle’s music system could work as a DLNA media server for use in providing media at secondary locations like holiday homes or worksites. This would be in conjunction with a DLNA-compliant media player connected by a WiFi segment between the vehicle and the building’s network.

There is more information about how DLNA is investigating implementation of this standard in the automotive context in this white paper (PDF) at their website.

Ethernet connection for navigation systems

The “sat-nav” systems can benefit from Ethernet connectivity for integrated units or WiFi connectivity for portable navigation devices. This could allow for these systems to have up-to-date information about new points of interest as well as another link for receiving real-time traffic information.

The IP feed can work very strongly with real-time information being received from the wireless Internet in order to provide updated traffic information and / or real-time service information for garages, restaurants, motels and the like. This will then allow drivers to make better decisions about their journeys such as alternate runs or use of services. It could cater for “social recommendation” functionality for the roadside services so one can go to where the food’s known to be good for example.

Support for IP-driven vehicle telemetry

The vehicle could have an Internet-based direct link to the garage that the owner has a working relationship with, or to the fleet-management service in the case of a vehicle that is part of an organisation-owned fleet. This link can allow access to historical diagnostic information about the vehicle thus allowing for informed decisions concerning what repair work needs to be taken or whether the vehicle should be pensioned off.

Similarly, there could be the ability to implement vehicle / driver surveillance techniques which can be of benefit to parents of teenage drivers or organisations who need to keep in step with workplace safety or professional-driver regulations.

In some cases like public and community transportation, it may be desireable to have IP-based closed-circuit TV surveillance that streams the vision “back to base” instead of or as well as recording it to a local hard disk. This will also please the police force where officers are in a “first-response” situation and need “many eyes and many brains working together” on an emergency situation.

Electric vehicles (including hybrid-electric vehicles)

These vehicles will typically benefit from network and Internet connectivity in order to permit flexible power management situations like optimised battery charging or vehicle-to-grid setups. They will also benefit from the above-mentioned IP-driven vehicle telemetry so that the user or preferred mechanic knows if the battery is not holding its charge in the same way that it used to, thus knowing when to have it replaced.

What needs to be done

I would prefer the in-vehicle network to be capable of working as its own network with a 3G or similar-technology WWAN as proposed by the vehicle builders in their implementation or as a member of user-selected WiFi LANs in a client / access-point (WDS) role. This can be determined by a list of “preferred” SSID / WPA(2)-PSK combinations held local to the vehicle.

The “Ethernet behind the dash” concept of using Category 5 Ethernet to create a wired LAN amongst in-vehicle subsystems has to be researched, This includes how Category 5 Ethernet can handle the problems associated with an automotive electrical system which is known to be very noisy or prone to surges and spikes such as while the vehicle’s engine is being started.

Once the concept of the automotive local area network is researched properly, there is the ability to use it as a simple data conduit across vehicle systems for all data-transfer applications, not just for Internet surfing by passengers.

IEEE finally approves 802.11n | The Register (UK)

802.11n: Ratified at last | Wi-Fi Planet

IEEE Ratifies 802.11n | WiFi Networking News

The Fine Points of Optional Wi-Fi 802.11n Certification | Wi-Fi Networking News

My Comments On This Evolution Of The Standard

Ever since 802.11n came about as a wireless standard, the equipment that was working to the standard was working to a draft version of the standard. This may have been acceptable for networks which weren’t critical to a business’s operations, because of the doubt associated with last-minute changes that could affect hardware compatibility. In some cases, this could also mean that an 802.11n segment may not work properly unless the equipment was based on the same chipset.

Now that the standard is final, enterprises can become confident about deploying 802.11n wireless network segments with cost-effective heterogenous equipment setups. As well, the cost of establishing an 802.11n wireless-network segment will reduce now that manufacturers can confidently sell more equipment at varying price ranges.

Existing 802.11n draft-standard segments

But what does this mean for networks based around existing 802.11n draft-standard hardware? Could they work properly with final-standard hardware with as much as draft-standard hardware being “flashed” to final-standard specifications. The compatibility issue raised in this question has been through the new revisions being declared optional rather than mandatory.

Support for single-stream 802.11n devices

The most popular benefit of the new standard would be the ability to support single-stream 802.11n station devices. This concept allows a device to have one transceiver rather than the two or three that is part of the standard. It is mainly brought about because of a need to have battery-operated devices like smartphones and VoIP WiFi handsets as part of the 802.11n wireless network and the single-stream 802.11n network adaptors can fulfil this need without draining the device’s battery too quickly.

The access points can provide full bandwidth to these single-stream devices without forfeiting bandwidth to other devices simply through the use of one dedicated stream for each of the devices. It then may be like providing the wireless equivalent of a “switched” Ethernet connection or ADSL-based broadband connection to this class of devices.

This factor has been improved with the ability for access points to be tested for three streams. This may allow for access points and routers to be differentiated on wireless-network performance levels as well as functionality levels.

Conclusion

The goal has been achieved for 802.11n to be a real wireless-network standard that complements the high-throughput Internet services and the multimedia networks of today.