wireless interface not able to connect after running setup

[Marius Bratu]

Hi,

I installed the security onion OS on a MacBook Pro (late 2011). Everything went smoothly, all the network interfaces were working fine (wlan0 - internet access and eth0 replying to ping in my network).
I planned to use the wlan0 as management interface (with internet access) and the eth0 as sniffing interface.

Once I used the Setup to configure the security onion monitoring tools, the eth0 (as sniffing interface) went in promiscuous mode which is ok, but wlan0 (as management interface) is not able to connect to the wireless access point, and hence no internet or network connectivity.

I tried to configure manually the wlan0 in /etc/network/interfaces as follow:
auto wlan0
iface wlan0 inet dhcp
wpa-ssid "My wireless access point"
wpa-psk "My wireless access point password"

but still not able to connect to the wireless access point.

Anybody has any idea on why i am not able to connect to my wireless access point?

Cheers for any information.

[Kris Springer]

I have a Dell laptop running SO with this configuration. After running the SO setup it kills the wifi.

Try running
sudo rfkill unblock all

Then configure the wpa settings just like you did, save, then reboot.

iwconfig will show you if the wifi is connected or not

NOTE: if you don't have any spaces in your wifi ssid or psk, you don't need the quotes.

Here's some additional config options for /etc/network/interfaces

For dhcp

auto wlan0
iface wlan0 inet dhcp

wpa-ssid blahblahname
wpa-psk blahblahkey

For static
auto wlan0
iface wlan0 inet static
wpa-ssid blahblahname
wpa-psk blahblahkey
address 192.168.1.234
netmask 255.255.255.0
gateway 192.168.1.1
dns-nameservers 192.168.1.1 8.8.8.8 8.8.4.4
dns-domain yourdomain.com