Our dear TUBIT changes again everything. Now they abandon one wireless network in favor for an another. Thus, here are instructions, how to access the new TUBIT network using wicd.

Follow instruction on TUBIT page to get the CA Cert. It boils down to:

mkdir -p /usr/share/ca-certificates/tu-berlin.de
cd /usr/share/ca-certificates/tu-berlin.de
wget http://www.tubit.tu-berlin.de/fileadmin/a40000000/tubIT/Trustcenter/TU-Berlin_Zertifikatkette.pem
echo tu-berlin.de/TU-Berlin_Zertifikatkette.pem >> /etc/ca-certificates.conf
update-ca-certificates

Setup wicd as follows:

Encryption: PEAP with TKIP/MSCHAPV2
Identify: <you-tubit-account>@win.tu-berlin.de
Password: <secret>
Path to CA Cert: /usr/share/ca-certificates/tu-berlin.de/TU-Berlin_Zertifikatkette.pem

And you are done.