Each year, ITS needs to update the security certificate on all campus computers. This certificate is what enables your computer to make a secure connection to the Deerfield wireless network. This month, a new certificate has been pushed out, behind the scenes, to your computer. If you are on campus, this has likely caused your computer to be dropped from GreenDoor and to jump to DAWireless. Please check your wireless connection. If you are on DAWireless, please select GreenDoor and enter your username and password when prompted. You should seamlessly reconnect to GreenDoor. If you have any issues related to this change, please reach out to the ITS Help Desk at helpdesk@deerfield.edu, ext. 1444. Thank you for your patience as we work to maintain a secure network environment.