Apple OS upgrade: Compatibility issue with campus Wi-Fi
Apple's Private Wi-Fi Address feature, introduced in macOS Sequoia and updated for iOS 18 and iPadOS 18, can cause connectivity issues when using campus Wi-Fi networks. The same is true if you update your iWatch or VisionPro.
At this time, OIT's recommendation is to wait to upgrade to the latest Apple OS release. If you do choose to update, OIT strongly recommends that you set Private Wi-Fi Address to "off" for the UCB Wireless, UCB Guest and eduroam networks.
Learn more about optimizing Apple devices' Private Wi-Fi Address for CU Boulder networks.
Overview
UCB Guest Wireless allows campus visitors quick and easy access to the internet. Guests simply choose UCB Guest Wireless SSID from their wireless networks, open a web browser, agree to the Terms and Conditions of Use, and are immediately able to browse the internet.
Features
UCB Guest Wireless provides general internet use. Guests cannot access CU Boulder resources that require on-campus connections or other protected servers and services that are provided strictly for CU Boulder-affiliated students, faculty and staff members.
- Wireless internet for CU Boulder visitors, conference attendees and others
- Connections don't require an IdentiKey, password or other credentials
- Guests can access Library eResources when within Nolin Library's wireless bubble (eResources remain inaccessible from elsewhere on campus)
- Connections last for 24 hours
Please note: Whenever sensitive data is transmitted on wireless, a VPN should be used for secure data transmission.
Cost
UCB Guest Wireless is provided as a common good to the campus, which means there is no direct cost to anyone.
How to get it
- Select UCB Guest as your wireless network.
Open a web browser and go to www.colorado.edu. You will be automatically redirected to a registration page.
View Screenshot
- Review the Guest Wireless Policy.
- Click the Agree button.
- You are now free to use UCB Guest Wireless for basic internet activity for 24 hours.
Related Policies
Guest Wireless Ports
All common web and VPN traffic is available through UCB Guest Wireless; however, some applications will not be able to connect due to the needed port not being open on UCB Guest Wireless network. The following ports are available:
Web
- 80/tcp, 443/tcp
- Secure SMTP – 587/tcp
- Secure IMAP – 993/tcp
- Secure POP – 995/tcp
- SSH – 22/tcp
- FTP – 20/tcp, 21/tcp
VPN
- (PPTP) – 1723/tcp
- (IKE) – 500/tcp & udp
- (IPSEC) – 4500/tcp & udp, 10000/tcp & udp
- (GRE) – protocol 47
- (ESP) – protocol 50
- (AH) – protocol 51
