ICT INFRASTRUCTURE IN VOJVODINA: R

1
ICT INFRASTRUCTURE IN VOJVODINA RD AND
EDUCATION SECTORProf. dr Zora
KonjovicProvincial Deputy Secretary for Science
and Technological Development
2

• RD Institutions
• University of Novi Sad (Novi Sad, Subotica,
  Zrenjanin, Sombor)
• Two research institutes (Novi Sad)
• High education
• University
• Colleges (located in larger cities)
• Elementary and high schools (spread all over
  Vojvodina)

3

• Internet access
• University and RD Institutions
• connected to Academic Network of Serbia
• Colleges
• (only few) connected to Academic network of
  Serbia,
• some connected to local Internet providers,
• some having no permanent connection
• Elementary and high schools
• Most having no permanent connection

4

• Local networks
• University and RD Institutions
• Urgent need for reconstruction, only minor part
  of institutions having proper technical solutions
  implemented
• Colleges
• Similar as above
• Elementary and high schools
• Most having no local networks at all

5

• Services
• University and RD Institutions
• Developing sophisticated solutions for the
  market, but offering very simple services to
  their own users
• Internet providing by ARMUNS
• Institution Web sites
• Faculty information systems
• Library information system, Digital library of
  thesis and dissertations (projects supported by
  Secretariat)
• Colleges
• Institution Web sites
• College information systems
• Elementary and high schools
• School Web sites

6
COMPUTER NETWORK OF ELEMENTARY AND HIGH SCHOOLS
IN VOJVODINA- BASIC PROJECT-
7
CONTENT

• Characteristic solutions in developed countries
• Current state in Autonomous Province of Vojvodina
• Proposed solution
• Educational System demands to bi met by Network
• Organizational structure of the Network
• Physical architecture of the Network
• Logical Architecture of the Network
• Basic Security Mechanisms
• Network Administration
• Software architecture of the Network
• Human resources/professionals
• Investments
• Building Plan
• Conclusion

8
CHARACTERISTIC SOLUTIONS IN DEVELOPED COUNTRIES

• Finland
• Great Britain
• Germany
• Australia

9
STATE IN VOJVODINA

• Global strategy - none
• ICT in elementary and secondary schools
• Public communication infrastructure
• Educational institutions
• Global survey
• ICT resources

10
EDUCATIONAL SYSTEMS DEMANDS TO BE MET BY NETWORK

• Local functions of school/institution in
• Teaching in all domains and particularly in ICT
• Business and administration
• Interconnecting schools/institutions
• School/institution access to other public
  networks, Internet access
• Distance learning

11
ORGANIZATIONAL STRUCTURE OF THE NETWORK

• Local school/institution network
• Services supporting local ICT functions in
  teaching and business/administrative processes
• Regional Center
• Connecting the schools at lower hierarchical
  level, interconnecting Regional Centers,
  providing Internet access fo regional
  institutions, providing services and information
  content for schools/institutions, presenting
  schools/institutions on Internet
• Coordination Center
• Necessary centralization for planning Network
  development and maintenance

12
DISTRIBUTION OF THE REGIONAL CENTERS AND LOCAL
NETWORKS
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PHYSICAL NETWORK ARCHITECTURE

• Local networks Regional center private
  network
• Through public telecommunication services (ISDN
  BRI, Frame Relay (min. CIR 64 kbps), permanent
  analog lines, switched telephone lines)
• Regional Center Internet local Internet
  provider
• minimum 256 kbps, Frame Relay (min. CIR 256 kbps,
  permanent analog lines
• Regional Center Coordination Center
• Devices in regional center are connected to
  devices in Coordination Center through virtual
  network links over configured IP tunnels

14
INTERCONNECTING
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PHYSICAL ARCHITECTURE OF THE LOCAL NETWORK
COMMUNICATION NODE TYPES

• Communication node for institution local network
  KCM
• Building communication nodes - KCO
• User access communication nodes KCP

16
PHYSICAL ARCHITECTURE OF THE LOCAL NETWORK
ARCHITECTURE HIERARCHY
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PHYSICAL ARCHITECTURE OF THE LOCAL NETWORK
COMMUNICATION LINES

• Main communication lines connecting KCM to
  KCO/KCP and KCO to KCP,
• Backup communication lines improving LAN
  redundancy (established to connect KCP and KCP,
  KCO and KCO, KCP and KCO, KCP and KCM, KCO and
  KCM),
• Access communication lines connecting endpoints
  to KCP.

18
NETWORK LOGICAL ARCHITECTURE

• Implementation through
• Hierarchical private IP addressing applied to
  complete network,
• Hierarchical name organization in DNS network
  configuration,
• Virtual local network technology applied to local
  network of the school/institution

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MODEL OF THE HIERARCHICAL PRIVATE IP ADDRESSING

• IP NETWORK 10.0.0.0/8 covers private address
  space of the educational institutions.
• Blocks from this space (with initial length of 16
  bits) are assigned to Coordination Center and
  Regional Centers. In order to provide extension
  of the center address space, allocation for
  network number is done within address space from
  the left.
• Institutions subordinated to regional center are
  provided with blocks (from available space).
  These blocks are with 24 bits mask and extension
  of the address space is done in a way that
  institution network number is obtained by
  allocating space within address filed from the
  right side

20
DNS NAMES ORGANIZATION WITHIN NETWORK

• Global network domain apv.edu.yu basic
  infrastructural network servers
• Coordination center sub domain kc.apv.edu.yu
  work stations and servers in Coordination Center.
• Regional Center sub domains ltmestogt.apv.edu.yu
  servers, active communication devices and work
  stations in regional center.
• Sub domains of the institutions connected to
  regional center
• ltnaziv-institucijegt.ltmestogt.apv.edu.yu.
• Teaching sub domain within school/institution
• nastava.ltnaziv-institucijegt.ltmestogt.apv.edu.yu.
  
• Sub domain for Administrative/business functions
  within school/institution
• adm.ltnaziv-institucijegt.ltmestogt.apv.edu.yu.

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DNS NAMES ORGANIZATION
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Virtual local networks

• Computer labs VLRM work stations in computer
  labs
• Teaching Staff VLRM work stations used by
  teaching staff
• Administrative/business VLRM work stations used
  by administrative/business staff

23
BASIC SECURITY MECHANISMS

• IP
• IP packet filtering (all communication devices
  and servers)
• ISDN
• Closed Group ISDN PRI number used for
  communication between institutions within private
  network, ISDN BRI numbers of institutions.
• PPP
• At all access points using PPP encapsulation
  (authentication, authorization and accounting for
  all users)
• Classified Data Interchange
• (Secure Shell (SSH), Secure Sockets
  Layer/Transport Layer Security (SSLv3/TLSv1),
  encrypted e-mail (PGP))

24
NETWORK ADMINISTRATION

• Local network Administration
• Regional Center Administration
• Coordination Center Administration

25
SOFTWARE ARCHITECTURE

• MULTITIER CLIENT/SERVER
• STANDARD SOFTWARE COMPONENTS AND SERVICES

26
CONFIGURATION FLEXIBILITY

• Elements are installed independently

27
ARCHITECTURE ELEMENTS CHARACTERISTICS 1/4

• dbms
• Based on relational model
• Multiuser access
• Data consistency
• Authorization
• Backup utility
• TCP/IP access
• Supporting jdbc, odbc, ole db
• Software tools for db administration

28
ARCHITECTURE ELEMENTS CHARACTERISTICS 2/4

• Application server
• Supporting standard software components (CORBA,
  EJB, DCOM, .NET)
• Supporting authentication
• Supporting user session tracking
• Supporting session failover
• Providing standard interface for DBMS access
• Supporting client access via standard protocols
  based on TCP/IP family

29
ARCHITECTURE ELEMENTS CHARACTERISTICS 3/4

• web server
• Support for standard HTTP protocol
• Support to common technologies for dynamic web
  content generation (Java servlets, JSP, CGI,
  ASP, ASP.NET)
• Supporting user session tracking

30
ARCHITECTURE ELEMENTS CHARACTERISTICS 4/4

• Client Applications
• Providing user interface for IS functions access
  by trained and authorized user
• Specialized application for downloading data from
  subordinated regional center

31
REGIONAL CENTER SERVERS

• Information distribution server
• Message exchange based on XML technology
• Standard protocols (HTTP, SOAP)
• mail server
• FTP server
• dial-in service

32
Applications 1/4

• Electronic education content
• Distributed by Coordination Center
• To be used in conventional teaching process and
  personal training
• Multimedia character requesting appropriate
  support for storage, transfer, presentation and
  retrieval
• Document management system or web server
• Distance-learning applications

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Applications 2/4

• School Library
• Local institution and regional institutions
  catalogs
• Access to public services
• Web based user interface
• Application based Librarian interface

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Applications 3/4

• Administrative/business applications
• Supporting functions in all institutions
• Controlled access through special applications

35
Applications 4/4

• Student records
• Classified data accessed by client applications
  from institution
• Public data accessed through Web

36
HUMAN RESOURCES

• Coordination Center
• Main Administrator
• Assistant Administrator
• Communication Engineer
• Software Engineer
• Operator
• Regional Center
• Administrator
• Communication Engineer
• Operator
• Local Center
• Local Administrator (part time job for teacher in
  ICT).

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INVESTMENTS ESTIMATION
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IMPLEMENTATION

• Phase I
• Coordination Center
• Selected schools and institutions
• Selection criteria needs, available public
  infrastructure, investments
• Selected regional centers
• Selection criteria selected schools, available
  public infrastructure, investments
• Phase II
• Selected schools/institutions
• Selection criteria needs, available public
  communication infrastructure, investments,
  existence of regional center.
• New regional centers
• Selection criteria regional needs (local
  schools), available public communication
  infrastructure, investments.
• Phase III
• Regional centers
• Schools/institutions

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CONCLUSION 1/3

• All functional demands met
• Modular network implementation
• Administration supported by small number of
  skilled professionals
• Independence of Internet and telecommunication
  service providers
• Expandable and scalable network

40
CONCLUSION 2/3

• Web interface providing simple access
• Client application used when functionality cant
  be met by web interface
• Architecture based on standard elements
  communicating by standard protocols
• Architecture characterized by high scalability
• STATUS OF THE PROJECT FINISHED MARCH 2002,
  IMPLEMENTATION NOT YET STARTED

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CONCLUSION 3/3

• THE PROPOSED SOLUTION CAN BE USED AS PROTOTYPE
  FOR ALL EDUCATION LEVELS
• BASIC CONCEPTS SATISFY DEMANDS OF RD INSTUTIONS
• ONE PROBLEM STILL REMAINS FINANCING

42
ICT INFRASTRUCTURE IN VOJVODINA RD AND
EDUCATION SECTORProf. dr Zora
KonjovicProvincial Deputy Secretary for Science
and Technological Development