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TNC 2003 Wireless Campus project

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Presentation on theme: "TNC 2003 Wireless Campus project"— Presentation transcript:

1 TNC 2003 Wireless Campus project

2 [ 2 Content… ]  CSP profile  Wireless Campus network  User mobility  Security  Further activities

3 [ 3 Content… ]  CSP profile  Wireless Campus network  User mobility  Security  Further activities

4 [ 4 Information-and-Communication-Technology Research Centre non-profit consortium recognized by the Italian Ministry of Education, University and Scientific Research ] CSP in brief

5 [ 5 CSP runs research and professional consultancy through permanent laboratories with the Turin Polytechnic and University of Turin –INLab (Integrated Networks Laboratory) 360° view on ICT solutions – Multimedia protocols (H323, SIP, streaming), networking (IPv6, BGP), and wireless technology as points of strength –SecureLab studies on ICT security aspects – application, network, system, and mobile security –WTLab (Web Technology Laboratory) studies on development and access to telematic applications (standards, tools, new technologies) ] CSP in brief

6 [ 6 Technology focus –IP-Based Technology Networks –IPv6 –Gigabit Networking –IP Telephony (H.323, SIP) –Wireless LAN –Satellite (DVB, DVB-RCS, MHP) –Digital security –Opensource ] CSP in brief

7 [ 7 Content… ]  CSP profile  Wireless Campus network  User mobility  Security  Further activities

8 [ 8 Objectives –Conjugate CSP R&D activities on WLANs with dissemination of competency –Promote the adoption of the wireless technologies among local communities and enterprises (SMEs, PA) ] Wireless Campus

9 [ 9 The mean idea is realizing a WLAN network as –Real test-bed for research activities on WLAN technologies –Experimental field for end-user services to prototype after R&D results Key issues –State-of-the-art technology –Multiple service scenarios ] Wireless Campus

10 [ 10 The Wireless Campus project has been supported by Environment Park: Turin technology park that combine technological innovation and eco- efficiency, hosting several companies and Research Institutes operating both in the Environmental Protection field and the ICT field ] Location

11 [ 11 The park provides a ideal location for the project for –Many SMEs and LABs are hosted –Offers wide band connection to ISPs –Provides private and public areas (conference centre) in a mixed environment –Promotes projects that could fit well for integration with wireless technologies (e.g. domotic LAB) ] Location

12 [ 12 Technology is b (and Wi-Fi) compliant Architecture includes –Access points + centralized management server for network infrastructure –Security servers –Add-on services devices (e.g. , multimedia, ecc.) Two phases for network deployment –Phase 1 First network core of 16 access points, management server, security servers and base services activation –Phase 2 Advanced service activation and coverage extension planning according to Phase1 results The network ]

13 [ 13 Phase 1 – network deployment ] RF coverage RF signal

14 [ 14 EM measurements –Identify EM permeability of building materials and structures at 2.4 GHz – useful for future deployments on building project phase –Simulation of EM field propagation indoor and outdoor based on previous measured values –Verification with possible RF interference sources (e.g. Bluetooth transmitters, other APs, ecc.) ] Site survey

15 [ 15 Phase 1 –All access point on the same LAN –Static IP addresses –Service provided for internal users only –Equipment (laptop, PDA) Phase 2 –Access point on different LANs –DHCP server to provide terminals public IP addresses –Service provided to visitors –Rentable client equipment The network ]

16 [ 16 CSP Enviroment Park SMEsLABs External networks (other hot-spots) WLAN access network WLAN management Security Shared services Intranet services Service centre Telco network Wireless Campus extensions Network architecture ]

17 [ 17 Basic (active) – –Web navigation – redirection to specific web pages to promote initiatives and locate offices in the park –Intranet access Advanced (to provide later) –Video-surveillance from wireless webcams –Instant messaging –Presence services –Streaming (radio, video) ] Services

18 [ 18 A single network infrastructure providing –Dedicated network access for some entities –Shared environment in common places Services –Targeted to different types of terminals (PDA, laptop, PC) –Tailored on the user privileges (web access, intranet resources availability) ] Issues

19 [ 19 Main points: –User mobility –Security –QoS –Interoperability ] Challenges

20 [ 20 Content… ]  CSP profile  Wireless Campus network  User mobility  Security  Further activities

21 [ 21 From network perspective –Phase 1 mobility among AP on the same WLAN  seamless handover –Phase 2 mobility among different WLAN  planning to deploy Mobile IPv4 on some areas  LAB activity on Mobile IPv6 From service perspective –Studies about user localization on WLAN –Location Based Services ] Mobility

22 [ 22 Plan to connect Wireless Campus hot-spot with GPRS Cellular operator network –Testing of WLAN-GPRS roaming features At present –802.11b client cards provided with SIM slot for GPRS connectivity –Users can connect through WLAN under Wireless Campus hot-spot coverage and through GPRS when away ] WLAN + GPRS

23 [ 23 CSP and Politecnico of Turin (Telecommunication Group) are investigating on WLAN mobile user localization techniques –Currently indoor coverage of WLAN can provide information about user location on AP “Cell-id” : each access point is associated with a section of the building –Poor accuracy –Localization can improve if the user is heard by a set of beacons, then triangulation techniques can be used –Hybrid solutions can be found combining different pieces information available for the communication interface User localization ]

24 [ 24 Content… ]  CSP profile  Wireless Campus network  User mobility  Security  Further activities

25 [ 25 Security Goals –Enhanced user authentication mechanisms –Class-based service differentiated access for WLAN users –Security & Mobility Security: what we need ]

26 [ 26 The Radio Medium is difficult to confine and control WLANs are exposed to different security threats –Sniffing Interception and Eavesdropping –Spoofing and Unauthorized Access –Denial of Service and Flooding Attacks –Network Hijacking and Modification Radio medium weaknesses ]

27 [ 27 Wired Equivalent Privacy (WEP) is in charge of ciphering data and identifying users for accounting… but… …it is not sufficient to guarantee a good security level for the WLAN infrastructure, in fact there are many security analysis that show WEP’s weaknesses and several tools realized to break it WEP is not sufficient ]

28 [ x standard is intended to provide strong and mutual authentication between users and WLAN elements, but also access control and key management For these reasons we adopt this standard in conjunction with the Extensible Authentication Protocol (EAP) to implement the security model of Wireless Campus and permit a wide variety of authentication mechanism So let’s use 802.1x ]

29 [ 29 SupplicantAuthentication ServerAuthenticator Operates on client EAP plug-in goes in RADIUS server Operates on devices at network edge, like APs and switches semi-public network enterprise network enterprise edge EAP over wireless EAP over RADIUS Controlled port: Data traffic Open port: Authentication traffic 802.1x scheme ]

30 [ 30 The park’s WLAN has to be connected to a cellular operator GPRS network The two access technologies (802.11b and GPRS) can integrate each other in a complementary way but they need two different schemes for user authentication Therefore we will trial SIM based authentication mechanism to let users move between public operator hot-spots and roam as he/she was in his/her home WLAN network Cellular operator side ]

31 [ 31 SMEsLABs WLAN access network Authentication management Local Authentication RADIUS proxy Telco network Remote Authentication (SIM) Authentication ] RADIUS CSP RADIUS Environment Park

32 [ 32 Content… ]  CSP profile  Wireless Campus network  User mobility  Security  Further activities

33 [ 33 Open source –Tools to try and test new features as soon as they are released through draft and proposals –Customize or deploy other enhancements Integration of open source with commercial systems as part of interoperability studies Tools –Access point –Authentication server –Authentication client Integration of the Open Source World ]

34 [ 34 Ad hoc networking Diffserv on b IPv6 and WLAN mobility (CSP is an IPv6 TLA) Streaming LBS VoIP over WLAN Performance measurements ] R&D activity & future enhancements

35 [ 35 Thanks! ] Finally… Thanks!

36 [ 36 Center of Excellence for Research, Development and Experimentation of Advanced Computer Science and Information Technologies Via Livorno Torino [Italy] Building A1lab    Information ]


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