Connecting to the UWPlatt wireless network, a network on my university's campus, can be tricky. Below is a snippet from my /etc/wpa_supplicant/wpa_supplicant.conf. Be sure to replace your_netid_username and your_password with your actual username and password.

network={
        ssid="UWPlatt"
        priority=6
        proto=RSN
        pairwise=CCMP
        group=CCMP
        key_mgmt=WPA-EAP
        eap=PEAP
        identity="your_netid_username"
        anonymous_identity="anon"
        password="your_password"
        phase2="auth=MSCHAPv2"
}