VPN - Setup and Connect using the Cisco Secure Client for iOS
VPN - Setup and Connect using the Cisco Secure Client for Android
VPN - Setup and Connect using the Cisco Secure Client for Windows
VPN - Setup and Connect using the Cisco Secure Client for Mac
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You have successfully connected to the CU Boulder network.
The CU Boulder campus network registration service is going through a phased upgrade. This upgraded registration service will periodically require reregistration. If you have questions about the new network registration service or the reregistration process, please contact the IT Service Center. Contact information is at the bottom of this page.
Firewall - Technical Information & Server Registration
CU Boulder is "closed" network meaning that, by default, traffic is not allowed into the campus network with the following exceptions:
- IP Security Protocol (IP protocol ID 50, IP protocol ID 51, UDP port 500)
*NOTE: None of these changes impact outgoing Internet traffic (for example, web browsing, connecting to external mail servers, etc) only traffic from the Internet attempting to connect to campus systems is affected.
UCB Wireless - Service Guidelines
Wireless Is Not Intended for Desktop Computers
UCB Wireless is not intended to replace wired jacks on campus. A campus data jack with a dedicated connection to the campus network is the fastest, most reliable and most secure communication channel for desktop computers. Wireless signals can be affected by environmental issues such as bookcases, desks, or furniture, as well as interference from 2.4 and 5 GHz phones, microwave ovens, Bluetooth devices, and wireless game controllers.
Dynamic DNS
Dynamic Domain Name Service (dDNS) is available to systems participating in the Campus Active Directory (AD). DDNS allows system administrators to configure their client systems to announce their own chosen name along with the IP address that was assigned to that client by the Dynamic Host Configuration Protocol (DHCP) server. This can facilitate easier management of groups of client systems without needing to use static IP addresses.
Wired Internet - Network Registration
Overview
In an effort to improve network security, OIT requires periodic registration of computers using DHCP (Dynamic Host Configuration Protocol) on all wireless networks, ResNet networks, and selected wired networks. DHCP allows a device to automatically obtain TCP/IP settings needed to connect to the network. Registration of a computer's network hardware allows CU network managers to notify the computer owner of any network security problems or usage violations.