Finder→Applications →Utilities→System Profiler→Network Contents→Configuration Name→Built-in Ethernet→look at the bottom half of the display for the “Ethernet Address”
System Preferences→Network→Ethernet pane, look for a sequence of numbers and letters next to Ethernet Address
Go to System Preferences→Network and follow these steps:
Select New Location from the Location pull-down menu. Enter a name for the new location (for example, ORA-Local), and click OK.
Select Built-in Ethernet from the Show pull-down menu.
From the Configure pull-down menu in the TCP/IP panel, select Using DHCP if your IP address will be assigned dynamically, or Manually if your machine will have a fixed IP address. (In most cases, particularly if you have a broadband Internet connection at home, your IP address is assigned via DHCP.)
If you’re on an AppleTalk network, select the Make AppleTalk Active option in the AppleTalk panel, and select your Zone (if any).
Click the Apply Now button.
Here’s how to set up your Mac OS X system for connecting to a VPN:
Launch Internet Connect (
/Applications). (If you
haven’t used Internet Connect before, you will be
prompted to configure the modem settings, or a VPN connection if a
modem can’t be found.)
Click on the VPN (PPTP) icon in the toolbar.
In the VPN Connection window, ...