On October 31st 2025, between 6:00 and 7:00 pm, we will activate new digital certificates for the wireless LANs eduroam and Uni-Mainz as well as for the VPN servers.
What does that mean for you?
Not much changes for you. The new digital certificate will be either - depending on the operating system or device - accepted automatically, or you have to confirm that you accept the new certificate when asked. Some devices show the name of the digital certificate, others a so-called thumbprint.
The new certificate for the Wireless LANs
The correct certificate is issued for the server radius.zdv.uni-mainz.de and contains the following information for comparison, of which only just a part is displayed (again depending on the operatin system or device):
CN = radius.zdv.uni-mainz.de
O = Johannes Gutenberg-Universität Mainz
S = Rheinland-Pfalz
C = DE
Thumbprint: 2b d4 ec 07 e3 76 46 87 30 09 d5 00 55 93 55 39 b4 52 b0 1b
The new digital certificate for VPN
CN = vpn.uni-mainz.de
O = Johannes Gutenberg-Universität Mainz
S = Rheinland-Pfalz
C = DE
Thumbprint: 4e 52 f5 fb 06 52 06 11 59 be c8 2a a4 c6 ca f8 1c ee 31 59
What are digital certificates?
A digital certificate is an elctronic proof of authenticity that certifies the identity of a computer or an organization. You can compare it with a real-life identity card. Due to regulatory requirements and to prevent misuse, we are obliged to regularly renew the certificates for these services.
More news from the Data Center → may be found here.