Legacy CUHK VPN (Virtual Private Network)

exclamation_mark_1 This page is no longer updated.

Legacy CUHK VPN is replaced by New CUHK VPN, therefore information contained in this page is no longer maintained.

If you want to set up VPN, click here.

CUHK VPN allows CUHK users to securely connect to the campus network even over a non-CUHK network access (e.g. home broadband service). The VPN technology encrypts the data transferred online and prevents private information from wiretap. Some CUHK websites / online resources are accessible off campus only if users have connected to a VPN connection.

Available to

Staff & students

Service Charge and Application

Free, no application required

Service Availability

24 X 7; except maintenance period


For new VPN set up, please use New CUHK VPN.

Details of CUHK VPN

  • Hostname: vpn.cuhk.edu.hk
  • Max connection session: 12 hours with 1 hour idle time out except Windows 8 / 8.1, Mac OS X 10.9 or above and iOS 7 or above.


  • Protect your sensitive information transferred online
  • Avoid lengthy idle time and moderate IP addresses usage
  • Prevent network resource abuse by prohibiting multiple logins to CUHK VPN / ClassNet
  • Unify access restriction methods on CUHK online resources. System developers therefore can restrict their resources to be accessible only via campus network and ask users to first connect to CUHK VPN if users are outside campus.


Services Require VPN Connection

  • The following central IT resources or services require a campus network connection when you’re outside CUHK.
    • CUHK Restricted Webpage at http://www.cuhk.edu.hk
    • CUPIS – CU Personnel Information System
    • CUSAP Financial System
    • IOPAS – Integrated Outside Practice Administration System
    • SPUS – Staff Profile Update System
    • SSAS – Staff Superannuation Administration System
    • ITSC managed Research Computing Platforms (Newcluster, AVES, GAIA)
    • Kaspersky anti-virus download center
    • Camtasia registration list
    • RDP (Remote Desktop Protocol) – policy
    • SMB (Server Message Block) – policy
    • Wake-on-LAN
    • ITSC Computing Account Application and Management System
  • Access ClassNet, a wired network in CUHK classrooms
  • For department IT services, please consult related departmental IT support.


  1. You may experience an unstable VPN connection and even fail to connect from Mainland China even followed all steps correctly. Most of the University systems do not require a VPN connection. You can do your email, access eLearning system, browse CUHK websites, etc. through any Internet connection. Please check out services that require a VPN connection.
  2. (For MacOS / iOS / iPadOS) Applications running on a VPN session may be interrupted every 48 minutes. During the interrupted period, applications normally will try to perform recovery itself. If the recovery can be made successfully, the application can be used again after a short pause. Otherwise, users will find the applications stop working and need to restart the applications.
  3. There’s a known issue with Windows 10 home edition (with version 1903, 1909) users fails to make a VPN connection. “Connecting to VPN” message keeps prompting on screen without making a connection. It could be a windows bug and some users fail to establish the connection at Windows system tray. Please follow the steps below to establish the VPN connection.
    Solution 1:

    1. In the Windows search box, type VPN Settings command.
    2. Click “VPN Connection”, “Connect”.
    3. When prompted, enter your Email Address as Username, and OnePass password for password. And then click OK to establish the connection.

    Solution 2:

    1. In the Windows search box, type rasphone command.
    2. On the prompted windows, click Connect.
    3. When prompted, enter your Email Address as User name, and OnePass password for password. And then click Connect to establish the connection.