The Radboud University makes use of a Content Management System (CMS) for websites. All CMS based RU websites are hosted by the ISC. The university’s Communication department (part of Radboud Services) is the owner of the service and responsible for its proper operation. C&CZ also offers WWW_Services. Which type of service is best suited depends on the functional requirements. C&CZ happily advises on this matter. Functional Management and Support All faculties and clusters have one or more facultary CMS functional managers....

A new version of Mathematica (12.3.0) has been installed on all C&CZ managed Linux systems, older versions can still be found in /vol/mathematica. The installation files for Windows and Linux can be found on the Install-disk, also for older versions of Mathematica. Departments that take part in the license can request installation and license info from C&CZ.

DMARC is increasingly being used as a spamfilter, checking whether the sender ought to send mail via this route. To comply with this for mail sent through Mailman, we will change the From: sender address to the list address. The current: > From: Some User <some.user@somewhere.domain> > Sender: "listname" <listname-bounces@science.ru.nl> will be changed to: > From: Some User via listname <listname@science.ru.nl> > Reply-To: Some User <some.user@somewhere.domain> > Sender: "listname" <listname-bounces@science.ru.nl>...

The support for Ubuntu 16.04 LTS ends on April 30th, 2021. Therefore we will turn off lilo5 with this version of Ubuntu on May 1st, 2021. The default login server (lilo.science.ru.nl) points to lilo7 with Ubuntu 20.04 LTS, but lilo6 with Ubuntu 18.04 LTS will remain available until support for this version ends in 2023. The signatures of the C&CZ loginservers can be checked. Please also check these tips for improving your SSH settings tips for improving your SSH settings....

Due to an emergency maintenance, the central microsoft exchange server is unavailable for 4 hours. This may also affect systems that are dependent on exchange. E-mail and calendar functionality is expected to be restored when the maintenance is done around 13:30 Today.

The latest version of Maple, Maple2021, can be found on the Install network share and has been installed on C&CZ managed Linux computers. License codes can be requested from C&CZ helpdesk or postmaster by departments that take part in the license.

The latest version of Matlab, R2021a, is available for departments that have licenses. The software and license codes can be obtained through a mail to postmaster for those entitled to it. The software can also be found on the install-disc. All C&CZ-managed Linux machines will soon have this version installed, an older version (/opt/matlab-R2020a/bin/matlab) is still available temporarily. The C&CZ-managed Windows machines will not receive a new version during the semester to prevent problems with version dependencies in current lectures....

To change the network of lilo7, we need to reboot this loginserver. If you want a stable connection to a loginserver during this downtime, please use lilo6 or the soon to be taken down lilo5. For more info see the page on C&CZ loginservers.

From now on, C&CZ signs the SSH keys of e.g. loginservers and compute clusternodes. That makes it possible for users, as explained on that page, to add the public signing key in the private .ssh/known_hosts, which makes one trust all C&CZ signed SSH servers. Whenever C&CZ deploys a new ‘lilo’, the question whether this might be spoofing will not occur then.

Organic Chemistry purchased a site license for the use of Gaussian 16 and GaussView 6 with the GMMX Module on Linux. The software has been installed on the cn-cluster. Departments that want to use this, can contact Prof. Jana Roithova or Postmaster.