- Unstable CUHK VPN connection reports have been received from users in Mainland China starting Oct 1, 2020
- This article aims to provide an overview of the current status and some workaround identified for the moment.
- For the VPN server address vpn.cuhk.edu.hk, 126.96.36.199 and 188.8.131.52, reduced number of connections from China was observed
CUHK VPN (with Add-On Service supported by Huawei Cloud)
- VPN connection still can be established by using VPN server IP 184.108.40.206 or 220.127.116.11
- Multiple retries might be needed before connecting successfully
Common issue (1)
Server no response error (windows)
- Press windows key + R, type “regedit” to run
- Check and verify in
Value for ProhibitIpSec should be 0
Value for AssumeUDPEncapsulationContextOnSendRule should be 2
Reboot the machine and try again if the value in Windows Registry changed.
Common issue (2)
- Credentials error:
- Please make sure your credentials are accurate,
and then try to login with password in the form of "[OnePass],[DUO 6digit token]",
please be noted that there is a comma in between,
- Besides the L2TP/IPsec CUHK VPN solution above, you may also consider the following to access some of the learning materials in the internet.
Alternative service (1): CUHK SSL VPN
- CUHK SSL VPN for CUHK network restricted website, https://www.itsc.cuhk.edu.hk/all-it/wifi-and-network/ssl-vpn/
- This is a split tunneling solution i.e. only CUHK network website will go through this VPN,
while other destination e.g. google, twitter remain using original ISP route.
- It can help you to access CUHK services requiring a CUHK VPN connection.
Alternative service (2): Third Party VPN (supported by HKT)
- Third Party VPN for non-China hosted eLearning website (blackboard), you may contact email@example.com for using this solution.
- This is a China hosted VPN service provided by a third-party vendor (HKT).
- No Google. No YouTube. Sites which are blocked by the PRC are still blocked.
- It can help you to access Blackboard, Panopto, CUHK Library (open access catalog)