Re: nm-applet reports 802.11 connected, but can't actually communicate over network?

["Selim T. Erdogan" <selim@alumni.cs.utexas.edu>]

Carl Fink, 10.02.2014:
> I'm trying to use my Testing system with a Realtek rtl8188ce 802.11 adapter.
> I use Gnome's nm-applet to connect to the wireless access point, and it
> accepts the passphrase and connects, fine. However, all attempts to do
> anything over the network fail, e.g. ping, traceroute, attempts to open a
> web page all time out with no result.
> 
> My first thought was name resolution but I get the same thing with an IP
> address.
> 
> My Windows 8.1 ultrabook connects to this network fine. So does my Android
> phone. So does my (company-issue) iPad. Why is the Debian system failing?
> 
> I do have the Realtek nonfree firmware installed and this system worked OK
> in another building using a different WiFi router.

Did that router use the same kind of encryption as this one?  Or are 
there any other differences you can think of?
 
> Output of ifconfig:
> lo        Link encap:Local Loopback  
>           inet addr:127.0.0.1  Mask:255.0.0.0
>           inet6 addr: ::1/128 Scope:Host
>           UP LOOPBACK RUNNING  MTU:65536  Metric:1
>           RX packets:4151 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:4151 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:0 
>           RX bytes:883087 (862.3 KiB)  TX bytes:883087 (862.3 KiB)
> 
> wlan0     Link encap:Ethernet  HWaddr 00:e0:4c:a1:07:a5  
>           inet addr:192.168.1.109  Bcast:192.168.1.255  Mask:255.255.255.0
>           inet6 addr: fe80::2e0:4cff:fea1:7a5/64 Scope:Link
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:796 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:828 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:1000 
>           RX bytes:251403 (245.5 KiB)  TX bytes:103301 (100.8 KiB)
> 
> 
> 
> Output of route: -v
> Kernel IP routing table
> Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
> default         192.168.1.1     0.0.0.0         UG    0      0        0 wlan0
> 192.168.1.0     *               255.255.255.0   U     0      0        0 wlan0
> 
> Thanks in advance for any help you may be able to provide.

Any chance you need to register your MAC address for this network?