Network changes websites

Simon Oosthoek — Tue, 18 Nov 2025 00:00:00 +0100

To make the network less complicated and more easily manageable, we need to make vlans for the subnets 131.174.8.0/24 and 131.174.9.0/24, this will involve some servers getting a new ip address. This affects firewall rules as well. We must coordinate this with ILS networking and the changes will cause disruptions between a few minutes up to a quarter of an hour.

List of sites:

alice.science.ru.nl
alicecontrol.science.ru.nl
coursetimetable.science.ru.nl
dmarcreport.science.ru.nl
edutools.science.ru.nl
eduview.science.ru.nl

DNS broken for subdomains of ru.nl

Thu, 11 Feb 2021 00:00:00 +0100

DNS-servers for ru.nl did not serve information about subdomains such as science.ru.nl. Thus no DNS-name will resolve to an IP address at FNWI. A workaround is to use as DNS servers: 131.174.224.4 en 8.8.8.8. If you try to connect to a service for the first time after ca 11:15, you’ll get an error like: “No such domain” or “Cannot resolve”. Restarting RU DNS servers at 12:45 may have fixed the problem. Without a real explanation, the problem went away after a few hours.

Websites on C&CZ News

Network changes websites

DNS broken for subdomains of ru.nl