Planned Maintenance on Firewall is scheduled for 15 September 2021. This will affect any CIS services including Network Connection(KITnet).
You will not be able to use the CIS services listed on the page below up to 1 minutes while the maintenance is underway. 
https://confluence.cis.kit.ac.jp/x/pOKL
(such as Moodle, Webex, Nextcloud, FileSender, etc)
◆Maintenance Period:
- 18:45pm Wednesday 15 September – 19:45pm Wednesday 15 September
Thank you for your cooperation.
If you have any questions and concerns, please access our online form
https://helpdesk.cis.kit.ac.jp/
and make an inquiry via the link “Get assistance for general IT problems and questions”.