Computer registration

The TU Darmstadt data network is operated jointly by the HRZ and the institutes. In order for your computers to access the Internet, all computers connected to the university network must be registered.

In this way, the information necessary for the operation of central network components (routers, name servers) is also collected. This information serves as a basis for planning and provides assistance in the event of a fault. In addition to the location, only information about the network hardware is requested.

Note

Registrations are made via cisOS. Instructions can be found on the TU Darmstadt information security website.

FAQ: Questions and answers

You can find current host lists here.

In a /30 and /29 subnet, all IP addresses can be assigned except the network, gateway and broadcast address.

From a /28 subnet and larger, all addresses can be assigned by the institute, except the network, gateway and broadcast address and an additional IP address below the gateway address.

The MAC address is a globally unique number of the network card and is assigned during manufacture. It is required by the HRZ for troubleshooting and in some areas for IP allocation (DHCP/BOOTP) and security. The address is usually represented as 6 two-digit hexadecimal numbers separated by dashes or colons, e.g. 00:00:C0:11:24:4a

If the MAC address is displayed as 44-45-53-54-00-00, this is not correct! (see below).

How do I find out the MAC adress?

On almost all current network cards there is a sticker with the MAC address, often with the addition “Node Address” or “Hardware Address”. The serial number may look similar, but usually has nothing to do with the MAC address.

How do I find out the MAC adress using Windows?

From the command line you can use ipconfig /all to output the network configuration. The MAC address is the physical address.

How do I find out the MAC adress using Linux?

With /sbin/ifconfig you get the interface data displayed. The MAC is the HWAddr for the interface eth0.

How do I find out the MAC adress using MAC OS?

In the apple menu you can access a screen via Apple System Profiler/Network Overview/AppleTalk. There you find the MAC address as hardware address.

For many services, such as SFP, DKIM or domain verification, it is necessary to enter a TXT record in the DNS.

Registration takes place as usual via the computer login.

Database: TXT
Status
Domain
Name
TTL
Data
TUID
Erzeugt
Modifiziert

Status: N
Domain: <Domain>
Name: <Name in der Domain oder @ falls der Eintrag für die Domain selbst ist>
TTL: 
Data: <TXT-Daten>
TUID: 
Erzeugt: 
Modifiziert:

Example:

Database: TXT
Status
Domain
Name
TTL
Data
TUID
Erzeugt
Modifiziert

Status: N
Domain: starfleet.tu-darmstadt.de
Name: @
TTL: 
Data: google-site-verification=xyz
TUID: 
Erzeugt: 
Modifiziert:

IPv6

Information about IPv6

Operating system configuration for IPv6