UCB Guest Wireless | Office of Information Technology

UCB Guest Wireless

Last Updated: 09/06/2016

UCB Guest Wireless only provides general Internet use. Guests cannot access CU-Boulder resources that require on-campus connections, such as Library resources and other protected servers and services that are provided strictly for CU-Boulder affiliated students, faculty and staff members.

After 18 hours, guests are required to once again accept Terms and Conditions of Use.

Note: Whenever sensitive data is transmitted on wireless, a VPN should be used for secure data transmission.


  • Wireless access for CU-Boulder visitors that doesn't require an IdentiKey
  • Connections last for 18 hours

Related Policies


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

  1. Select UCB Guest as your wireless network.
  2. Open a web browser and go to www.colorado.edu. You will be automatically redirected to a registration page.
    Guest Wireless Registration page
  3. Review the Guest Wireless Policy.
  4. Click on the Agree button.
  5. You are now free to use UCB Guest Wireless for basic Internet activity for 18 hours.

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:


  • 80/tcp, 443/tcp


  • Secure SMTP – 587/tcp
  • Secure IMAP – 993/tcp
  • Secure POP – 995/tcp
  • SSH – 22/tcp
  • FTP – 20/tcp, 21/tcp


  • (PPTP) – 1723/tcp
  • (IKE) – 500/tcp & udp
  • (IPSEC) – 4500/tcp & udp, 10000/tcp & udp
  • (GRE) – protocol 47
  • (ESP) - protocol 50
  • (AH) - protocol  51