URL of “Nikkei Telecom 21” has changed.

【On campus】http://t21ipau.nikkei.co.jp/ipauth/auth/auth?sid=1

【Off campus】”SSL-VPN Gateway Service” or “Authentication Gateway Service”
(Please refer to this page below.)
http://www.dl.itc.u-tokyo.ac.jp/gacos/e/faq-e/gakugai-e.html