Determine and register your MAC address (SRN)

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A MAC address is the physical address of a network card. MAC stands for “Media Access Control”. Students or guests (with a UT guest account) can register MAC addresses at the Selfservice Registration Portal for Network Devices (SRN) to access the wired UT network. 

Before you start

  • This manual is written for Windows, MacOS and Linux.
  • This manual uses a consistent style of writing: references to text and buttons on screens are printed in italics, information that you have to enter yourself is printed in bold.  

determine the MAC address


  1. Click on the Start button, type cmd and press Enter.
  2. Type in ipconfig /all and press Enter. Your network configurations will display.
  3. Scroll down to the Ethernet network adapter and look for the values next to Physical Address, which is your MAC address.


  1. Open System Preferences.
  2. Select Network.
  3. In the left-hand pane, select Ethernet.
  4. Click Advanced in the lower right corner.
  5. Choose the Hardware tab, under which you will see the MAC address of your ethernet card.


  1. Open a new terminal with root privileges or run it as a superuser using sudo.
  2. Type ifconfig and press Enter.
  3. The MAC address is now being displayed at the HWaddr, ether or lladdr line.

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