On October 30, 2026, between 5:00 p.m. and 6:00 p.m., we will activate new digital certificates for the wireless LANs eduroam and Uni-Mainz, as well as for the VPN servers .
What does this mean for you?
Not much will change for you. Depending on your operating system or device, the new digital certificate will either be accepted automatically, or you will be prompted to confirm that you accept the new certificate. Some devices will display the name, while others will show a so-called “fingerprint” of the digital certificate.
The new digital certificate for the wireless LANs
The correct certificate is issued for the server radius.zdv.uni-mainz.de and contains the following information for verification, though (again, depending on your operating system or device) you will only see a portion of it:
CN = radius.zdv.uni-mainz.de
O = Johannes Gutenberg University Mainz
S = Rhineland-Palatinate
C = DE
Fingerprint: 8b a2 83 c1 16 47 31 e2 4b ea 12 be 0f 47 c7 6b 41 f2 59 39
The new digital certificate for VPN
CN = vpn.uni-mainz.de
O = Johannes Gutenberg University Mainz
S = Rhineland-Palatinate
C = DE
Fingerprint: ce 4f f9 ac 2b e0 f9 28 57 10 8e b9 c4 c0 53 1a 47 32 89 80
What are digital certificates?
A digital certificate is an electronic proof of authenticity that verifies the identity of a computer or an organization. You can compare this to an ID card in real life. Due to regulatory requirements and to prevent misuse, we are required to regularly renew the certificates for these services.
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