Login to gw.buaa.edu.cn
You should have a gw-buaa.conf in /etc/
USERNAME:Your Username
PASSWORD:Your Password(raw)
FOR systemd
sudo cp gw-buaa@.service /usr/lib/systemd/system/gw-buaa@.service
sudo systemctl start gw-buaa@[Your INTERFACE Name].service
FOR SysVinit
sudo cp rc.d/gw-buaa /etc/rc.d/gw-buaa
sudo update-rc.d gw-buaa default