Breadcrumb TourArchived: Firewall Upgrade Rescheduled for March 6

Last Updated: 10/10/2018

Update: Please note that this firewall upgrade, which was originally scheduled for Wednesday, February 28, has now been rescheduled for Tuesday, March 6.

Campus border firewalls will be upgraded to 40 gigabits per/second the morning of Tuesday, March 6, from 5:30 a.m. to 6:30 a.m. During the maintenance window, all campus network traffic to and from the internet will be unavailable for approximately 15 minutes. On-campus network traffic between on-campus machines should not be affected by this maintenance.

Here are some specific examples of how campus services will be impacted.

While using the campus network (UCB Wireless, UCB Guest, Eduroam, wired network):

  • Unable to access resources outside the campus network (Canvas, Desire2Learn,, etc.)
  • Unable to access email accounts (Exchange Online, Gmail)
  • Able to access on-campus resources (
  • Able to use the campus VoIP phone service

While using a different network (home, coffee shop, cellular data network, etc.):

  • Unable to access sites and other resources housed on the campus network
  • Unable to connect to CU Boulder Virtual Private Network (VPN)
  • Able to access email accounts (Exchange Online, Gmail)
  • Able to access services not housed on the campus network (Canvas, Desire2Learn, etc.)

You can learn more by visiting the Service Alert.