Wired Internet Access (Math Department)

  • Faculty & Staff

Wired Network (PennNet) in DRL

Your must register your computer's MAC address (or physical address) before it can access PennNet via Ethernet.

MAC addresses consists of 6 pairs of letters/numbers. Your computer may display them as an unbroken string, or as pairs separated by colons (:) or dashes (-)

Using a laptop or other networked computer, visit the DHCP Registration website (PennKey-authenticated) and register your MAC address. N.B. you must use colons  —  e.g. 00:5a:6b:c7:de:00  —  to separate the alphanumeric pairs.

Depending on location, it may take up to 20 minutes for servers to update. Usually, the wait is much shorter.

Finding your MAC Address

Windows 7 / 8.1 / 10

  1. Open a Command window (Start Menu > cmd.exe)
  2. Enter ipconfig /all
  3. Locate the Local Area Network interface/card
  4. Copy the MAC address/physical address


  1. Open System Preferences
  2. Select Network
  3. Select the TCP/IP tab
  4. Copy the Ethernet Address


  1. Open your preferred terminal shell
  2. Enter sudo ifconfig -a
  3. Locate the Ethernet interface (e.g., eth0)
  4. Copy the HWaddr