My ubuntu 9.04 cannot connect to WPA2-PSK AES wireless network

[mvm]

Hi, I was a bit tired of Xandros on my Asus eee pc 901, because I got so few security updates. So I installed Ubuntu 9.0.4 remix.
Now I encountered the same problem as many here with a hidden SSID, which hinders the wifi connection.
I.m.h.o. there is no valid reason in general to hide your SSID, but nevertheless, this should work. It worked with Xandros, it works with OpenSuse 11.1, so Linux is not at fault here.


I found this work-around
Open a terminal, enter: sudo iwconfig ra0 ESSID <your-ssdid>
You have to enter your password. After a while the connection is established. ra0 is the name of my wireless card. Unfortunately, you have to do it after every start.

But why hide your connection? It is not a security matter. Anyway, as soon as you unhid the ssid, it will be picked up by all the wireless neighbours automatically, and kept in their internal tables, and be lookup up at each startup . To prevent that, you should keep your ssid hidden from the very start, so never broadcast it.
My router has a hard disk in it, that starts spinning as soon as some foreigner tries to make contact, and I don't want that. That's my sole reason to have a hidden SSID.
What is a security issue, is the strength of your password.
I took my password from the famous grc site: https://www.grc.com/passwords.htm

Hope this helps a bit.Marc

[Dorrax]

It works, thank you!

[BLiNDiNG]

I'm newbie to linux and just start with jaunty

I use zyxel g-302 v3 pci card
I have found many topic about problem on this card
all of them can not use at all

I have found this link http://rtl-wifi.sourceforge.net/wiki/Installing

told me that jaunty kernel are driver included

But I can connect to none secure wifi and it works fine but not wpa-psk

I assume this was config problem not driver. Is it? or maybe driver problem?

[DouglasAWh]

There don't appear to be any mentions of certificate based authentication in this thread. Can this be done with certificates? It doesn't look like NetworkManager can, anyway.