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External Network Connectivity
   
Set Up and Run a VPN Connection
Notice
Max. Connection Time Per Session
All Operating Systems
  • 8 hours with 1 hour idle time out.
  • You can make the connection again when the session expires.
Special notes for Windows 8.0/8.1 Symptoms
  • A VPN session may end after one hour.
  • You can make a new VPN connection when the session ends. Some users may also need to manually disconnect from network (e.g. Wi-Fi) and then reconnect to it before they can make a VPN connection again.
Solutions
  • If you are using Windows 8.0, you can request a hotfix directly from the solution released by Microsoft at KB2955808. Or you can also obtain the hotfix from CUHK by (1) connecting to CUHK VPN; (2) visiting here . Please follow the VPN setup instruction below if you have not set up the VPN.
  • If you are using Windows 8.1, you should be able to obtain the Update Rollup June 2014 from Windows Update
  • For more information, please visit the solution KB2955808 released by Microsoft.

Step 1

Prepare the following before setting up VPN clients:

  1. computer installed with LAN card
  2. your Computing ID and CWEM password

Step 2

Click below for Windows L2TP IPSec Protocol setup procedures for:

  1. Windows 8
  2. Windows 7

User guides for other VPN connection methods:

  1. Mac OS X 10.5 or above
  2. Mac OS X 10.4
  3. Mac OS X 10.3
  4. iPhone and iPod Touch with firmware 2.x
  5. Android 4.x
  6. Android 3.x
  7. Fedora Linux 8
  8. Ubuntu Linux version 12.04
  9. Ubuntu Linux version 11.04

Details of VPN Servers:

  • Hostname: vpn.cuhk.edu.hk (for all VPN services)
  • Max connection time per session: 8 hours with 1 hour idle time out
VPN
Connection Services

Number of VPN Services

Total Max. No. of Concurrent Users Supported

Classrooms or other Campus Areas (ClassNet)

2 Aruba Controller
1000

CUHKNet
(via Public ISP Network)

2 Aruba Controller
1000

Reminder:
The ITSC would suspend your VPN access to the Campus Network and disable your current network connections when a huge amount of abnormal network traffic was generated from your computer.

For more details, please refer to http://www.cuhk.edu.hk/itsc/security/protectpc/ants.html

 

Need Help?
For comments and enquiries about this service, please write to the ITSC Service Desk at
http://servicedesk.itsc.cuhk.edu.hk

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