News

by S K Tsui

wifi
City University of Hong Kong has full Wi-Fi coverage in the entire campus, powered by over 2,800 Access Points (APs). These APs are all Wi-Fi 5 (802.11ac Wave2) compatible. Subsequent to a recent Internet bandwidth upgrade, the individual bandwidth control is unleashed. In other words, users using ...

by Cyril Ha

vpn
Due to the recent COVID-19 breakout, many foreign students have been forced to return home to continue their study via online learning. With the huge demand for remote access to the CityU campus network, the Computing Services Centre (CSC) has been working hard to enhance the capacity of the Virtual ...

by Manfred Chan

data centre
The Primary Data Centre at City University of Hong Kong (CityU) will be relocated to make room for several strategic initiatives and the setting up of additional web laboratories. The Primary Data Centre relocation project is divided into two phases: the first phase is scheduled to complete by the ...

by S K Tsui

wifi
The CityU WLAN upgrade project began in 2017 (Ref: Network Computing Issue 92 – June 2017​) and has been ongoing for more than two years. During this period, the outdated Aruba Wi-Fi system was replaced to support the 5th generation of Wi-Fi standard 802.11ac (Wi-Fi 5). Up until now the Computing ...

by Andes Cheung

Diagram excerpted from Nutanix HCI solution
Introduction CityU currently maintains its own datacenters to provide an IT infrastructure supporting diverse services for teaching, research, administrative, and management use. Dated back a few decades ago, we have adopted a three-tier architecture consisting of compute, storage and networking ...

by Alex Lam

Trust setup in HKAF
It is very common nowadays for students and staff to access research data, journals and courses online offered by other education institutions or companies over the Internet. The access usually requires users to sign up and create different user accounts. This article will detail how the Computing ...

by Cyril Ha

High Level Network Diagram with Admin Firewall added
Background​ Information System Security has been a key concern over the past many years as more and more business processes rely on Information Technology to operate. Alike many other organizations, the usual first line of defense would be Internet protection with security devices such as a ...

by S K Tsui

What is IoT? The Internet of Things (IoT) refers to billions of network devices, sensors and actuators around the world capable of gathering data (e.g. temperature, location, etc.) from the environment and sharing the data across the Internet. The data collected will then be analyzed, processed and ...

by S K Tsui

The majority of the wireless access points (APs) installed on campus were the outdated Aruba AP-125 model (product of year 2009) which supports legacy standards 802.11a/b/g/n but cannot support the 5th generation of Wi-Fi standard 802.11ac. In order to meet the increasing demands from user devices ...

by Manfred Chan

What are public, private and hybrid clouds? Public clouds are services based on the standard cloud computing technology to provide flexible and on-demand computing and network resources to the general public over the internet. A public cloud deployment model is different from a private network ...