Start by opening the System Preferences by clicking on it in the dock or choosing it from the Apple menu.
Next, select the Network, as shown to the left.
Select Ethernet in the left column.
Once in the Ethernet configuration, if the settings are grayed out, click the lock to make changes. You will need to authenticate with an Administrator account password. Otherwise, skip to the next step.
Click on the Configure: drop-down menu and select Manually.
Set the IP Address, Subnet Mask, and Router Address to the numbers provided in the OIT confirmation message you received.
DNS Servers should be set to the three IP addresses provided in the OIT confirmation message you received. If unknown, you can look up the DNS servers for your location on campus at DNS Servers for CU Boulder .
Additional Search Domains should have colorado.edu as its only entry.
Once done, click on the Apply button and close the Network window.
Open a web browser to test your connection. In some instances, you may be asked to register your computer onto CU Boulder's network.
If you do not have Internet connectivity, try restarting your computer.