Gemeinsame Systemgruppe IfI/b-it

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News and Service Indications

Here you will find recent Information and service indications for our infrastructure. If you are interested to receive these informations via email, please subscribe to We are using this list to announce technical issues, maintenance windows and the results of these proceedings.

2020-10-21: External Network Outage

After a small Powerdisruption, all external network connections were down for about 20-30 Minutes. The local infrastructure of b-it and c.s.dept. was unaffected by this incident.

The Mailserver (which is located in the HRZ, which was affected more severly than us) will be available as soon as possible. Please be patient.

Update The Mailserver is available again.

2020-10-17: Maintenance Window for the Network Infrastructure of the Serverrooms of C.S. Dept and B-IT

At Saturday, the 17th of October 2020, beginning at 10:00 and lasting up to 17:00, the complete network infrastructure of the serverrooms of both the c.s. dept and the B-IT will be down for software upgrades. This will affect the whole IT-infrastructure of both institutes.

2020-09-28: The Aftermath of a Power Outage

Due to a power outage in the early morning, there were massive connectivity problems throughout the university networks.

In the computer science dept., all systems without direct UPS-support were affected, but these problems should all be fixed by now.

2020-09-22: Changes for wireless networks CP1GUEST and EDUROAM-CS

Due to routing changes of the abovementioned networks, we anticipate a few discontinuities for them. If you have a CS/B-IT account, we remind you that you should better use our internal network ''802.1X'' (which most likely won't be affected this time). Update: The activities have been terminated for the time being.

2020-09-17: Maintainance of Internet Connection: finished

Due to maintainance of the Internet connection, individual services might be disconnected for a short time today. Normally, you can reconnect right away.

2020-09-01: New Service: Matrix IM

We just finished the deployment of a node of the instant communication network. More info can be found here.

2020-08-17: Maintainance of Account server

The maintainance of the account creation and renewal website, startup, is finished.

2020-08-10: DNS Resolving last Weekend

From sunday, ~13:00 up to today, ~9:30, we experienced minor problems throughout the entire network of the c.s. dept and the B-IT due to a failing primary nameserver. The problem was corrected by now.

2020-05-03: Mailservice temporarily down

Due to failed network equipment in the HRZ the mail server is offline at the moment. Please be patient while the problem is solved.

UPDATE: the problem has been solved, the mail service is available again.

2020-04-24: Discontinuation of OSP Videostreaming

Due to massive problems with the software Backend, we had to shut down our streaming services on the OSP server permantly.

2020-03-18: Reduction in attendance times due to COVID-19

Due to the special situation we find ourselves in these days, we decided to reduce our attendance service to the absolute minimum possible for the foreseeable time. Further information is available here.

2020-03-05: Availability of the Computer Pool Rooms U1.012, U1.041, U1.042

After the end of the Schüler-Krypto 2020, the above mentioned pool rooms and the computers in there have been returned to their regular use.

2019-06-25: Update Status Imagine Premium/Microsoft Azure Dev Tools

By now a registration using the university email address is possible. More information available on this page.

2019-06-25: Status Imagine Premium/Microsoft Azure Dev Tools

Since Microsoft changed the name of the program from “Imagine Premium” to “Azure Dev Tools for Teaching”, they changed the requirements for registration to the program portal, too. As for now, an institute email address is required for registration. As newer students are not longer provided with one of these, only older students with an old address are able to register. Microsoft is working on a solution to this problem, but as for now, there is no workaround. So we cannot provide you with access to the program at the time-being.

2019-06-24: Loss of central Storage at B-IT

Last Friday around noon we experienced a total loss of several central components of our userstorage for UNIX (NFS) and Windows (SMB). Sadly we had to realize that we lost a rather important large storage component completely, so we had to recover the affected storage areas from our backup to alternative server systems. Because of that, a certain loss of data in the confines of the regular backup schedule (usually daily in the night) has to be expected.

The data rescue operation is completed by now, all services were restored again.

2019-05-29: New Host Keys login.bit

The SSH Login Server of the b-it was reinstalled and received new host keys. If you want to verify, please refer to the following fingerprints:


SHA256:xfo6iWzDsy0MwsKCX1qISP6Q7fuAmeDxlmZI3kiFX1g root@login2 (ECDSA)
SHA256:xMB8gcZWBVR+5xCDqHpxDkY81oRClxV2HFl1Ft7HKYM root@login2 (ED25519)
SHA256:QhXyzQWSI6BMGCjafXbgA+UVRLpgtfhPGXr90jNAZ3k root@login2 (RSA)


MD5:e5:ab:e3:80:bb:83:ba:b0:bb:df:d3:aa:a7:94:c5:1d root@login2 (ECDSA)
MD5:b0:d5:91:48:17:9e:70:b5:de:48:66:6c:21:14:37:fc root@login2 (ED25519)
MD5:3d:8e:c3:d0:33:80:c7:a6:e5:30:6f:c4:da:8b:56:5d root@login2 (RSA)

2019-05-20: eduroam, eduroam-cs and the new certificate

Until the replacement of the eduroam-cs certificate within IT, the certificate specified here must still be used when connecting to eduroam-cs! We will have completed the conversion to the new CA within the next few days, so you can also use the new certificate within eduroam-cs, as stated in the HRZ newsletter. We will announce this accordingly here.

2019-04-29: No Audio available in Room 0.107

Because of a device defect, there is currently no audio available in room 0.107. Please bring your own speakers or contact GSG for alternatives. We hope that the replacement amplifier will be installed during week 19.

2019-04-16 11:45: Takeover of the regulated help desk operation

From now on, access to our IT Helpdesk in room 0.014 is open to all students and staff at regular core times. There, we are happy to answer your questions about the IT infrastructure and solve your technical problems.

The help desk is staffed at the following core times:

Weekday core time
Mon 10-14 pm
Tue-Thu 12-16 pm
Fri 12-14 pm

Please refrain from contacting our staff in other offices (except transponder matters) so that we can do our job properly.

2019-04-12 10:00: DNS resolver has been switched off

The DNS resolver had been replaced by 2a00:5ba0:10:330::b 2a00:5ba0:10:330::11

a few weeks ago and has been turned off on Friday, April 12th, 2019, 10:00 local time.

(We will return our temporary network to the University Computing Center shortly.)

Most machines (computers, printers, scanners, etc.) are configured by DHCP automatically and have switched already, We have told about others, that we had detected, to the colleagues in the work groups that manage them.

Should there still be machines that are manually configured to use by the users themselves: you have to change the DNS resolver setting to the values shown above. However, as far as we can see, there are only a few left, that are already known to their administration. So the only problematic machines are such that were switched off for the last few days.

2019-01-29: Scanning from the multifunction device "feder" in the BYOD room (U1.040)

It is now possible to scan from “feder” not only onto a USB storage device, but also into an E-mail. You have to login first, using the display of “feder” (“Alternate Login”). Please don't forget to log out afterwards.