WLAN UT Gert Meijerink Service Departement for Information

WLAN @ UT Gert Meijerink Service Departement for Information Technology, Library and Education (ITBE) Gert. Meijerink@utwente. nl 11/23/2020 DFN 2004 1

Agenda • University of Twente • Program Wireless Campus • Project WLAN @ UT – Infrastructure – Testbed – Education 11/23/2020 DFN 2004 2

Campus • Research and education • Sport, culture, shops • Housing of 2000 students • 9000 students and employees • Related companies 11/23/2020 DFN 2004 3

Program Wireless Campus • Broad range of research and applications of wireless and mobile telecommunication • In the past WAP, now WLAN and UMTS • ‘testbed’ for wireless applications 11/23/2020 DFN 2004 4

Project WLAN @ UT • • European tender procedure Installed a Wireless LAN 650 wireless accesspoints - type Cisco 1200 Covers whole of the 140 hectares (346 acres) of the university campus • Part of the ‘Wireless Campus’ project of the university • Possible with financial support of the Dutch Ministry of Economic Affairs • Built in cooperation with IBM Netherlands and Cisco Systems 11/23/2020 DFN 2004 5

Cisco Aironet 1200 Series 11/23/2020 DFN 2004 6

WLAN infrastructure(1) • Enables students and scientists of the university access to the Internet everywhere • • • 11/23/2020 on the university campus in the university buildings the dormitories by the poolside the campus park DFN 2004 7

WLAN infrastructure(2) • Improves the flexibility and independence of time and location • Facilitates new ways of teaching • New teaching concepts also enable a more flexible use of teaching rooms 11/23/2020 DFN 2004 8

WLAN infrastructure(3) • Standards – IEEE 802. 11 b – IEEE 802. 11 a – IEEE 802. 11 g – IEEE 802. 1 X 11/23/2020 11 megabit standard 54 megabit standard access control DFN 2004 9

Installation • • • Site survey Radio plan AP’s Antenna’s Experiences described in cookbook (Dutch) 11/23/2020 DFN 2004 10

Coverage • 4 categories defined – Lecture rooms – Conference rooms – Dormitories – Public areas • With different quality requirements 11/23/2020 DFN 2004 11

Management AP’s • One station for managing all the AP’s • CISCO WLSE – Wireless LAN Security Engine – Template based configuration of AP’s – Secure HTML-based UI – Role based access control 11/23/2020 DFN 2004 12

Security • Physical • Network access – IEEE 802. 1 X • EAP-TTLS • Dynamic WEP-keys 11/23/2020 DFN 2004 13

802. 1 X Overview • A method for performing authentication to obtain access to IEEE 802 LANs. Ideally occurs at the first point of attachment (i. e. the edge) • Specifies a protocol (EAPOL) between devices desiring access to the bridged LAN and devices providing access to the bridged LAN • Specifies the requirements for a protocol between the Authenticator and an Authentication server (e. g. RADIUS) • Specifies different levels of access control and the behavior of the port providing access to the bridged LAN • Specifies management operations via SNMP 11/23/2020 DFN 2004 14

Local authentication 11/23/2020 DFN 2004 15

Local authentication switch of Wireless Access Point EAPOL Supplicant EAP over RADIUS Authenticator RADIUS server Authentication Server bijv. LDAP User DB Internet AS voorziet Authenticator en Supplicant van tijdelijke WEP-keys. signalling data 11/23/2020 DFN 2004 16

Local authentication Supplicant Authenticator Authentication Server User DB Internet Nu is veilige communicatie mogelijk signalling data 11/23/2020 DFN 2004 17

Authentication of guests 11/23/2020 DFN 2004 18

Authentication of guests Supplicant Authenticator RADIUS server Instelling A RADIUS server User DB Instelling B Internet Centrale RADIUS Proxy server signalling data 11/23/2020 DFN 2004 19

Authentication of guests Supplicant Authenticator RADIUS server Instelling A RADIUS server User DB Instelling B Internet Centrale RADIUS Proxy server signalling data 11/23/2020 DFN 2004 20

User support • • HELPdesk IT-shop Installation service Installation guides – Installatiehandleiding WLAN@UT voor Windows XP Installatiehandleiding WLAN@UT voor Windows 2000 Secure. W 2 Client v 1. 0 Installation Guide Secure. W 2 Client v 1. 0 Software Secure. W 2 Client v 1. 0 User Guide – Installatiehandleiding WLAN@UT -GUEST- netwerk Installatiehandleiding WLAN@UT voor MAC Installatiehandleiding WLAN@UT –GUEST- MAC Test draadloze netwerkkaarten 11/23/2020 DFN 2004 21

TESTBED • Test products • Finding business applications for information technology and telecommunications research 11/23/2020 DFN 2004 22

Education • Examples – Industrial Design – Technical Medicine 11/23/2020 DFN 2004 23

E-Learning and Wireless Where are we going with e-learning? Will wireless get us there faster/better? Prof. dr. Betty Collis Shell Professor of Networked Learning University of Twente, The Netherlands 11/23/2020 DFN 2004 24

Higher Education: Trend • Network technologies are widely used in teaching and learning: but as part of a blend – Not replacing the instructor – Not replacing the lecture or the book, but extending them 11/23/2020 DFN 2004 25

Two types of flexibility… • Logistics of learning: • Pedagogic of learning: To extend and enrich how you learn; via To make processes better social learning, more efficient, easier, new models of more professional, learning; new ways of better organized, justcreating, designing, in-time, archivable and building learning 11/23/2020 DFN 2004 26

Logistics of learning • • • Organizing Archiving Finding Saving Maintaining agenda Synchronizing Communicating Submitting Contacting Transferring, sharing 11/23/2020 With flexibility of time and place DFN 2004 27

Pedagogical flexibility • From being given to finding or creating • From fixed to options • From listening to doing Teaching and learning • From one-size-fits-all flexibility to tailoring • From copying notes to presenting 11/23/2020 DFN 2004 28

From lab to collaboratory 11/23/2020 DFN 2004 29

From isolation (even in a crowd) to collaboration where you want 11/23/2020 DFN 2004 30

E-Learning and Wireless Where are we going with elearning? Will wireless get us there faster/better? Yes! Prof. dr. Betty Collis Shell Professor of Networked Learning collis@edte. utwente. nl 11/23/2020 DFN 2004 31

Links and more information • University of Twente – www. utwente. nl • WLAN – cookbook – Installation guides http: //www. snt. utwente. nl/handleidingen/manuals. html • 802. 1 X – http: //www. surfnet. nl/innovatie/wlan/ • Education – Lisa Gommer e-mail: e. m. gommer@utwente. nl – Prof. Dr. Betty Collis e-mail collis@edte. utwente. nl 11/23/2020 DFN 2004 32

? ? ? 11/23/2020 DFN 2004 33