1. Open Networks - Session I Introduction to Open Networks and WLPR.NET Matti Juutilainen Matti.Juutilainen@lut.fi Lappeenranta University of Technology Communications Engineering

2. Agenda The evolution of wireless LANs WLAN network models & comparison Wireless Lappeenranta network model WLpr.net Influences of open networks Conclusions

3. The Evolution of Wireless LANs + manageable, easy planning – high building costs, interference – closed, limited possibilities – roaming requires co-operation Internet Company Intranet Closed Access Network Company ISP Closed Access Network ISP network Wireless ISP network

4. The Evolution of Wireless LANs + likely to spread, lots of users + shared building costs + public, wide possibilities (users, services, …) + easy roaming – hard to manage – difficult to plan (access point locations) – coverage area – Internet-access? Internet ISP Community Network Community network

5. The Evolution of Wireless LANs Open Access Network Company Intranet Internet Company ISP Operator Interface Lappeenranta Model + manageable, easy planning + low building costs, less interference + public, wide possibilities + easy roaming + lots of users + local services – complex user routing and authentication Public multi-ISP network

6. WLAN Network Models PUBLIC MULTI-ISP COMMUNITY Seattle Wireless BAWUG COMMERCIAL TeliaSonera HomeRun Jippii WLAN WLPR.NET Stockholm- Open.net

7. Comparison of WLAN Network Models Commercial networks Community networks Stockholm- Open.net WLPR.NET Access networkClosed accessPublic hot spotsPublic access Goals Get customers, provide Internet Provide Internet & local links, get rid of ISPs Provide a public access system Provide a public access system with local services Commercial potentialVery highLowHigh Costs to end userHighLow Operating reliabilityHighLowHigh Network managerISPPrivate people Neutral admin (& private people) PUBLIC MULTI-ISP COMMUNITY Seattle Wireless BAWUG COMMERCIAL TeliaSonera HomeRun Jippii WLAN WLPR.NET Stockholm- Open.net

8. Wireless Lappeenranta Network Model Operator Neutral Access Network ISP Company Internet Gateway 3 - NAT (optional) - Log-file collection … Gateway 4 - NAT (optional) - Log-file collection … … … Users Operator Interface Gateway 1 - WWW Proxy - WWW Server - Firewall - Log-file collection … Gateway 2 - NAT (optional) - Log-file collection … ISP’s server - Authentication - NAT (optional) ISP’s server - Authentication - NAT (optional) ISP’s server - Authentication - NAT (optional) … Network services - DHCP server - User identification - Domain Name Server - WWW Server … Company Intranet Service Interface Services to be offered in the regional network Registered Service Providers Anonymous Service Providers A centrally managed, public regional network infrastructure

9. Wireless Lappeenranta Network Model A centrally managed, public regional network infrastructure ISP 1 ISP 2 ISP 3 FIREWALL (IP/MAC) Operator Neutral Access Network Internet Access Controllers HTTP Cache Redirector WWW Server Source Routing Other Common Services Middleware (taild) DHCP Server Database Client Radius Server WWW Server PHP DNS Name Service NTP Database (MySQL) WWW Server Syslog Local services Access Points Hot Spots Users Operator Interface FIREWALL (IP/MAC)FIREWALL

10. Wireless Lappeenranta Network http://www.wlpr.net/

11. Influences of Open Networks Local influence Influence on –Internet Service Providers (ISPs) –Service providers –End users –City and the local area –Network manager

12. Conclusions WLAN networks are affordable and popular for the last mile. WLAN technology is not yet mature –Need for speed, reliability, security, range, lower costs, interoperability, QoS etc. Also other competing/supporting wired network technologies (Fiber, Ethernet, …) New network models are emerging –Community networks –Public multi-ISP networks Demand for public and affordable local networks.

13. Conclusions Commercial usability is vital. Different network options: –Commercial single-ISP networks Advantageous only for the ISPs? –Community networks (Seattle Wireless etc.) Commercial usability/reliability? –Public access systems StockholmOpen.net Wireless Lappeenranta HelsinkiOpen.net Regional networks In practice, most of the networks are a combination of previous options.

14. Conclusions Publicity will be in a key role –Public access networks will be strong. –Publicity offers new opportunities for everyone Internet Service Providers (ISPs) Service providers End users Neutral network manager City and the local area Need for services and content!

15. Thank you! Questions? Matti.Juutilainen@lut.fi

16. EXTRA TRANSPARENCIES

17. Open Multi-ISP Network Models Internet Operator Neutral Open Access System ISP 2 DHCP ISP 1 DHCP Relay MAC DB Internet Operator Neutral Open Access System ISP 2ISP 1 Local services (DHCP, DNS, login, DBs, positioning, maps, guidance, games, …) Source based user routing & HTTP Cache StockholmOpen.net WLpr.net (Wireless Lappeenranta Network Model)