How to connect to Protected EAP (PEAP) wifi via terminal

Question

My friend needs to connect to the wifi in our school, which uses a Protected EAP (PEAP) Authentification.

He installed the Gnome GUI by the way.

When he tries to connect to the wifi however, after putting the login and password, a window pops up warning that he didn't select a CA certificate (which is not needed), and he can't interact with that window. Meaning that he can't select ignore and then connect.

Is there a way to connect to this network by using the terminal?

Edit: My question was identified as similar to another, but the answers there doesn't help us. The network we are trying to connect to is one that needs username and password [Protected EAP (PEAP)]. The question/answers from the other thread only talk about the usual wifi where we only need to input the wifi's password.

Solution

In the words of kemtnbkr on the Ubuntu forums:

Make sure wpasupplicant is installed

1. Remove network manager from startup apps; log out and log back in

2. change your /etc/network/interfaces to: Code:

   auto lo
   iface lo inet loopback
   
   auto wlan0
   iface wlan0 inet dhcp
   wireless-mode Managed
   wpa-ssid **censored**
   wpa-ap-scan 1
   wpa-proto RSN WPA
   wpa-pairwise CCMP TKIP
   wpa-group CCMP TKIP
   wpa-key-mgmt WPA-EAP
   wpa-eap PEAP
   wpa-identity **censored**
   wpa-password **censored**
   wpa-phase1 fast_provisioning=1
   wpa-pac-file /home/kyle/Downloads/chain2.cer
   

3. With terminal: Code:

   sudo ifconfig wlan0 down
   sudo ifconfig wlan0 up
   sudo dhclient wlan0 -v
   

4. You are Connected.

Comments

[Mark Kirby]

Possible duplicate of connect to wifi from command line