Advantages of having Virtual Private Network (VPN) technology implemented on the campus network.

• To moderate the usage of IP addresses and to allow a fair share of resources.
  As there is a growing need for IP addresses (137.189.x.x) with more hostels are being built, the current one cannot meet this expansion. We are now studying IP V6 (128bit) to solve this issue. On the contrary, with the time limit policy, all unused IP addresses could be released for a better resource allocation.
• To eliminate the registration process before the actual use.
  All ports are now enabled under VPN technology. Residents do not have to contact the College Office to update their registration records. Once they have their VPN programme and CWEM account ready, they can make a connection to ResNet. Hence, if they suspect their network ports are damaged, they can also test the port using other computer. This helps to speed up the process in troubleshooting.
• To avoid lengthy idle time.
  Others may use an unattended PC inappropriately and the residents have to be responsible for any actions taken.
• To reinforce prohibition of multiple logins to ClassNet, ResNet and CUHKnet.
  This helps to prevent the abuse of accessing CUHK network service (such as dialup service) by non-CUHK members.
• To determine the usage pattern for future network planning.