Knowledgebase : Wireless

In order to allow a system to connect to the 'uabhs' secure wireless network, a request for the system's access must be placed with HSIS & the system must be approved for this access.  Once it's approved, the user of the system in question will receive a username & password to use to connect to uabhs.  However, before authentication can take place the following steps must be followed to manually create a wireless network profile to access uabhs.  If the network profile isn't created, the user will receive a 'cannot connect to uabhs' error (no password/passcode prompt will arrive) when trying to access the uabhs SSID.  Follow these steps to create the profile:

  1. Open Network and Sharing Center
  2. Click on the "Manage Wireless Networks" link at the upper-left.
  3. Click the Add button at the upper-left.
  4. Choose "Manually create a network profile."
  5. Enter the following settings.  Network name: uabhs (THIS IS CASE SENSITIVE), Security Type: WPA2-Enterprise
  6. Leave the rest of the settings at their defaults & click Next.
  7. Allow the profile to be created & then choose the "Change Connection Settings" prompt that appears.
  8. Click the Security tab & select the Settings button.
  9. Uncheck the "Validate Server Certificate" checkbox.
  10. Select the Configure button.
  11. Uncheck the "Automatically use my Windows logon name and password" checkbox & click Ok.
  12. Select the Advanced Settings button.
  13. Check the "Specify authentication mode" checkbox, & select "User authentication" in the drop-down menu.
  14. Click on the Save Credentials button & enter the username & password received from HSIS for the uabhs network & click Ok.
  15. Click Ok to close the remaining windows & then click Close to close the final window.
  16. The system should then automatically connect to the uabhs wireless network.

How to forget a Wi-Fi network Apple's macOS

  1. Click the Wi-Fi icon toward the upper right of your screen in the menu bar. It looks like a pizza slice.
  2. Click on Open Network Preferences.

    Click on the Wi-Fi icon in the menu bar and then click on Open Network Preferences.

  3. Click the Advanced button.
  4. Click the Wi-Fi tab.

    Click on the Advanced button and then click on the Wi-Fi tab.

  5. Select the network(s) you'd like your Mac to forget.
  6. Click on the minus (-) button.

    Select the network(s) you want to forget and then click the - button.

  7. Click on the OK button.
  8. Click on the Apply button.

    Click on OK and then Click on Apply.

Source - http://www.imore.com/how-set-wi-fi-your-mac