I received email from David, for his trouble in wireless connection using Mandriva.

I am having problem with my wireless connection using Mandriva Linux 2006. I’m using a D-Link Airplus G+ laptop card with NdisWrapper to connect to my D-Link G604T wireless router on bootup. Everything starts OK and if I check /etc/resolv.conf the name server is set to 212.30.8.151. All is well for about 20 to 30 minutes and then I find I am unable to connect to any webpages. The network is still showing as up but when I check /etc/resolv.conf again, it now reads ‘nameserver 192.168.1.1′ and I have to set up my wireless connection using Mandriva Control Center all over again.
This happens regardless of whether I have WEP encryption set. I had a similiar problem using Mandriva Linux 2005 and overcome this by setting the permission to resolv.conf as read only, but this doesn’t seem to work with 2006.

Mandriva is using DHCP to get web address and routing information from the router. It would appear that your router is running as DHCP server but not a DNS server / cache. This router provide both services, so it is likely that DNS is either disabled or misconfigured. In fact, the router is telling your computer to use it as DNS server, which should work. The solution is to go into the DNS’s section of router’s web configuration and set it to Auto Discovery. If this fails, you can set the servers manually on the same page.

Alternatively, you can prevent Mandriva from upgrade the DNS server via DHCP. Go into Mandriva Control Center > Network & Internet > Reconfiguration A Network Interface, select your interface, go to the DHCP tab and turn off the option to Get DNS Servers From DHCP. Setting /etc/resolv.conf to read-only will not help if DHCP client is running as root, since root is still able to modify write-protected files.

Most people take for granted the security of their computers connection to the outside world. And in many homes and offices this is a reasonably good assumption. But, things do change when someone, armed with a laptop computer and a wireless “WIFI” connection ability visits a local public “hotspot”, perhaps at the local coffee shop.

These type of locations are rapidly growing and provide temporary internet connections to visitors through wireless devices called wireless routers. They offer a convenient way to use your own computer with the internet at little cost to the service owner. These wireless connections, since they are “public”, are not configured with the security and encryption protection that a normal private network should have.

In these locations, it is possible for anyone with minimal hardware and software to eavesdrop on any of the wireless broadcasts that are taking place. And since there is little or no network security, usernames and passwords can be easily stolen.
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Generally speaking, wireless computer connections are reliable. However, nothing is perfect, and sometimes you may lose your connection or experience a weak signal. There are many factors that impact the reliability of your wireless connection. For example, if your wireless adapter is too close to a 2.4 GHz wireless telephone, you may notice a decrease in your computer’s wireless single strength. Why? Because the phone and the computer reside on the same frequency and can interfere with each other’s performance.

Handy Repair Checklist for Wireless Interruptions
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Saitek, best known for its gaming peripherals, now has some welcome portable audio entries. The Saitek A-250, for example, is a versatile one-piece dualspeaker set with a neat trick up its sleeve: It can receive music wirelessly from any Windows PC via a USB 2.4GHz transmitter.

An unusual design certainly helps separate this product from the pack. The A-250 looks a bit like the head of a praying mantis, reminding us of Zorak from Space Ghost but in a high-gloss black finish. The tweeter grilles are outlined in metallic red (left) and copper (right). What makes this thing look really creepy are the 1-inch red drivers visible beneath the grilles.

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Wireless Corporate Office

With access points, businesses can now enable employees wirelessly roam corporate office without losing connections with essentials files, printers, email and network services. And business travelers can enter networks in growing number of hotels and coffee shops by using its wireless devices.

Users worldwide are currently installing multiple levels of wireless security protections to ensure that unauthorised users cannot penetrate the network. Most wireless devices includes the use of AES algorithms on signals in addition to virtual LANs to provide additional encryption and user authentication capabilities.
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Wireless outdoor connections are both functional and trustworthy. However, some precautions are needed when deploying or designing outdoor fixed wireless solutions.

There are two different approaches to fixed wireless technology :- point-to-point and point-to-multiple point. Point-to-point allows for large broadcast between two points while point-to-multiple point creates a high-speed wireless network.

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Thanks to its impressive and clever design features, the MoGo Mouse BT from Newton Peripherals just may become one of the most popular accessories for road warriors in a long time. The flat, wireless mouse uses Bluetooth to connect to desktops or notebooks, and for notebook users, the mouse stores inside an available PC Card slot when not in use.

Inside a PC Card slot, the mouse recharges in less than an hour. The MoGo Mouse BT’s ergonomic design has left and right indentations for clicking, plus a unique kickstand that properly places the mouse in your hand for comfort.

Official Website : Newton Peripherals