Setting up WDS between Asus WL 520GU and 520GC + WPA encryption gets the whole network into a conflict.

I've decided a few days ago that in order to improve the security of my wireless network, I should change the encryption of the network from WEP (which can be decrypted in under 60 seconds, that's proved), to WPA (which can resist even a year to a decryption attack, experts say).  The reasons was that I had some doubts about the devices operating on my network, but everything is clear now (I have over 10 devices usually connected on the network).

I have two Asus routers, a WL 520GU one (with print server), and a WL 520GC one. I've written some time ago an article on how to set up WDS (or Wireless Distribution System) between them (a method of improving signal into your house for example, by setting them to operate in the same way, under the same name), which is available here (it should be applicable to almost any other models of Asus routers).

So, let's return to the problem from the title. I've changed their both encryption method to WPA, and I've let them continue working. Everything worked smooth for a few tens of minutes, than my devices were disconnected.They reconnected very fast (a few seconds), and continued working, again, for a few tens of minutes.

Then, suddenly, the entire network crashed, all devices were disconnected, and all tries to reconnect failed, as the main router (from which comes the internet connection) was refusing to give addresses to the devices requesting them. I said that it refused to give addresses, because it is practically the one doing the whole job, with the second one only repeating what it "says" to the network. As I wasn't able to receive the addresses, there was no possibility of getting into the routers in order to check the reports to see what could possibly fail like this. A restart of the routers (disconnecting their power cables) made the network start working again (this happened somewhere around 1:30 A.M. in the morning).

And they continued working until the following afternoon, when the network crashed again, creating exactly the same situation. I've searched for an update for the firmware of the routers, but there wasn't any. I've also searched to see if somebody else was having the same problem, and I found a few users reproducing quite the same situation, but the provided fixes were not helping at all.

I changed the encryption back to WEP in that afternoon, and everything has been working perfectly since then (very stable). I can't imagine what could be the problem that caused that crashes, probably that there's an incompatibility between these routers when they're operating in WDS while encrypted with WPA.

So, I repeat. If your Asus WDS crashes while secured with WPA, try changing that with WEP. Hope this helps you.

Using social networks such as Twitter, Facebook, Myspace or LinkedIn? Then, try HootSuite.

HootSuite is a professional social client, featuring various platforms: Twitter, Facebook, Facebook Page, LinkedIn, Ping.fm, WordPress, MySpace and  Foursquare. I presented you some time ago Seesmic's web service (here), and the main difference between them is that HootSuite is much more complex and supports other platforms, not just Twitter.

There are many things you can do with HootSuite: track results of your websites (only for WordPress), add contributors to your account (who can post from your account), schedule posting at certain time/date, monitor mentions or assign tasks to your contributors. All those in a well organized screen, with a theme of your choice (you have 3 themes to choose from).

Posting is done easily with a large number of options, and with the option of selecting the network on which to post. If you are confused about changing settings, viewing your stats or managing plugins, just hit that owl on the upper left corner of the window.

Go now on http://hootsuite.com/, create an account, and start using all of your social networks from one single place.

CONFIRMED: Google is now selling a new version of Nexus One compatible with AT&T 3G.

Yesterday, Google has announced that Nexus one is available in a new version. Since yesterday, the Nexus One has been compatible with most 3G carriers worldwide. However, AT&T and Rangers Wireless from Canada are using a 3G frequency which is incompatible with the Nexus One. But with this additional version of Nexus, Google makes it compatible with the mentioned networks. Now, if you want to buy a Nexus One, you can select if you need this additional version right on the official site (when you make the order):

More on official Google blog here and also on engadget.

Setting up WDS (wireless distribution system) between Asus routers.

Asus made a great job with their routers, being a popular company in this domain. Their routers assure a pretty good range of signal, excellent speed, and high stability for network connections. But in a large building a normal router from Asus won't be enough. It won't be able deliver signal and will loose speed if thick walls and other wireless/bluetooth/infrared devices are between. Here comes the WDS, or Wireless Distribution System.

This system consists of two routers of the same type or not (at least both from Asus), which will be connected together resulting a larger area of signal, and higher speeds on devices which had lower signals on a single router.

You need one of the routers to be connected to the internet via a ethernet cable, and the other will communicate (together with his clients) through the first one. Please be sure which one is connected "outside" on the internet (the main router, we'll name it "first router"), and the other one, which will communicate through the "first router" (this is going to be named the "second router")

Here is a guide that will let you know everything that you need to do (with pictures): http://www.4shared.com/file/229730229/3f658e18/ASUS_Wireless_Router_WDS_Confi.html

The main things are:

• both routers must be set to operate into "Hybrid" mode
• both routers must operate on the same Channel
• both routers must have the same security method and the same password
• their LAN ip's must NOT be the same!
• first router must have DHCP server enabled, while the other (second one) doesn't
• first router must have normal internet settings (depending on how you connect to the internet), while the other must have "automated IP" settings.
• after you are sure that you know their LAN ip addresses, give them the same SSID (name)

By doing the last point, any wireless device will allow you to connect to the router corresponding to that name. But, in fact, there are two routers working together under the same name.

Now you should be able to get on the internet on wireless or via any LAN port from both routers.

Method implemented for Asus WL-520GC <--> Asus WL-520GU by me and works perfectly. Good luck!

Twitter is a part of our lives.

Twitter, the popular micro-blogging platform, is a network that anybody "should use". It's the best socializing platform I've ever seen. I've joined it about 4 months ago, and I'm actively using it every day. Twitter helped me to find really nice people from any part of the world, and also generated some traffic to my blog. But it also helped me to get the latest news very easy, in minutes after they were released on the internet, without having to wait for the magazines I'm usually reading until they appear.

Twitter has grown dramatically in the last year, so their servers are sometimes out of capacities when something important happens, and everybody tweets about it. Due to this aggressive increase of users, many programs appeared which can allow you to connect to Twitter in other ways than via "Web" method, providing you different ways to use Twitter, and many options to make it more efficient.

Yahoo!'s "Meme", a kind of Twitter, was launched by Yahoo! but so far, it has no success. I'm just thinking about how much time can Google resist without buying Twitter, because the more they wait, the more they will have to pay for it. And even if Google didn't declare anything about a possible acquisition of Twitter, many experts said that now is the moment when Google should take Twitter.

So, if you didn't do it already, I invite you on http://twitter.com/ to create an account, and then to start following me. My username is "ITeer". Enjoy Twitter !