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Page 1: Policy-based Design of School NetworksAbstract Policy-based Design of School Networks Tanabe Junichiro In today’s schools, computerization is progressing quickly. Computers tends

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Policy-based Design of School Networks

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Page 2: Policy-based Design of School NetworksAbstract Policy-based Design of School Networks Tanabe Junichiro In today’s schools, computerization is progressing quickly. Computers tends

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– i –

Page 3: Policy-based Design of School NetworksAbstract Policy-based Design of School Networks Tanabe Junichiro In today’s schools, computerization is progressing quickly. Computers tends

Abstract

Policy-based Design of School Networks

Tanabe Junichiro

In today’s schools, computerization is progressing quickly. Computers tends to be

set up throughout schools and connected to Local Area Networks. As a consequence,

it is necessary for us to urgently propose a school network policy on what kinds of

networks should be installed and how they should be managed.

In this report, we propose the concrete method of protecting students’ individual

environment in building school networks based on network policy. Further, we present

the outline of a network monitoring system that is essential for manageing the networks

at schools.

key words Network Policy, Network Management, Monitoring, School Networks

– ii –

Page 4: Policy-based Design of School NetworksAbstract Policy-based Design of School Networks Tanabe Junichiro In today’s schools, computerization is progressing quickly. Computers tends

ù1 ú û ü 1

1.1 ývþ w�ÿ�� . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.2 ývþ w Å�Á . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.3±���� w� ��

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

ù2 ú ���������� 3

2.1�\�\�������vª�«�¬�z�d

. . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2.2bvc\z�³v´�w��\�\�������vª�«�¬vw�µvj

. . . . . . . . . . . . . . . . . . . 3

2.3c����\�\�������vw���������ä�å��

. . . . . . . . . . . . . . . . . . . . . 6

2.3.1 ����� à�¬�w����\z����v��«ëñ����v­ . . . . . . . . . . . . . . . . 6

2.3.2ÐvÑvâvã�w�ä�å

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.3.3 �� �!�" ~����������vwvä�å . . . . . . . . . . . . . . . . . . . . . 7

ù3 ú #�$�%'&'( ö�õ�)�*'+�, ��-�. 9

3.1c����\�\�������vª�«�¬�z�d

. . . . . . . . . . . . . . . . . . . . . . . . 9

3.2 / �v��0�1��U��ª�«�¬ . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3.3���v��«�ñ��Þª�«�¬

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

3.4Ýv�'2�ðR¤���3\«�ñ��vª�«�¬

. . . . . . . . . . . . . . . . . . . . . . . . 12

ù4 ú %'&'( ö�õ�)�*'+�,�4�5 ��6�7�#�$�%'&'( ö�õ�) ��8�9 15

4.1�\�\�������� ��ví�:�;

. . . . . . . . . . . . . . . . . . . . . . . . . . . 15

4.2c����\�\��������¢v»�}�r�©�yvä�å���w�<�=

. . . . . . . . . . . . . . . . 16

4.3ÐvÑvÒvÓ�w?>�@

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

4.4 A�B �v��:��Þð���Cv»�}���y�âvã�¬vð�ñ�ò . . . . . . . . . . . . . . . . . 19

4.5 Web Basedc����\�\��������í�îv��«��vïv¬vð�ñ�ò

. . . . . . . . . . . . 22

– iii –

Page 5: Policy-based Design of School NetworksAbstract Policy-based Design of School Networks Tanabe Junichiro In today’s schools, computerization is progressing quickly. Computers tends

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4.5.1í�îv��«���ïv¬vð�ñ�òvw�ó Â

. . . . . . . . . . . . . . . . . . . . . 22

4.5.2:v����Ev��ðv¬vð�ñ�ò�z�w�F�G

. . . . . . . . . . . . . . . . . . . . 24

4.5.31���; B ï�w�H�I . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

4.5.4 J�K lvm�w A ��;���«��vï . . . . . . . . . . . . . . . . . . . . . . 29

ù5 ú L M 36

5.1ÐvÑvÒvÓ�w?>�@\z�:��vðv��â�ã�¬vð�ñ�òvw�N�O

. . . . . . . . . . . . . . . 36

5.2c����\�\��������í�îv��«���ïv¬vð�ñ�òvw�N�O

. . . . . . . . . . . . . . . 40

5.3 / ;�P�1�:��RQ�¹�S�T�U�V�W . . . . . . . . . . . . . . . . . . . . . . . . 41

5.4��X � ¬���Ýv�và�Y���}���yU� ��Z ���?<�= . . . . . . . . . . . . . . . . 45

ù6 ú [ ü 49

6.1± ývþ w���\ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

6.2 ]�^ w�_våKz�`�a . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

b�c51

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– iv –

Page 6: Policy-based Design of School NetworksAbstract Policy-based Design of School Networks Tanabe Junichiro In today’s schools, computerization is progressing quickly. Computers tends

2.1�\�\�������vª�«�¬vw� �� Â�h

. . . . . . . . . . . . . . . . . . . . . . . . 4

2.2 GUI � �v� A�i ��ðvw�j . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.1�\�\�������vw�¥ §�k�l

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

4.1c����K���������� ��ví�:�;

. . . . . . . . . . . . . . . . . . . . . . . . . 16

4.2ª�«�¬ A�mn� ;�w�ov»�j . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

4.3ª�«�¬ A�mn� ;�T�p�w�ó  . . . . . . . . . . . . . . . . . . . . . . . . . . 21

4.4:��vð�� B ï � �v¬vð�ñ�ò?q�r�svw�t�u . . . . . . . . . . . . . . . . . . . 21

4.5 SASProxyw�ó Â

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

4.6 SASProxyw?v�w�x § Ú�y

. . . . . . . . . . . . . . . . . . . . . . . . . . 23

4.7í�îv��«��vïv¬vð�ñ�òvw�ó Â

. . . . . . . . . . . . . . . . . . . . . . . . . 25

4.8:v���?Ev��ð�á�w�z�{�t�u

. . . . . . . . . . . . . . . . . . . . . . . . . . 25

4.9 | ��}�è�~�w�t�u . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

4.10~����ë��;�kvw��vé�w�j

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

4.11í�îv��«��vïv¬vð�ñ�òv}���y��vé�j

. . . . . . . . . . . . . . . . . . . . . . 27

4.12 � U�����w B ïvw�j . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

4.13N�O�¬�ð�ñ�òv}���y

sendmail B ïvw�x § w��v� . . . . . . . . . . . . . . . 29

4.14 | ��}�Q������U��k����\��x�����w��vé . . . . . . . . . . . . . . . . . . . 30

4.15 webalizerw�����j

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

4.16 URL � ~�������P i �����y . . . . . . . . . . . . . . . . . . . . . . . . . 34

4.17 A ��;���«��vï�È�y URLw � . . . . . . . . . . . . . . . . . . . . . . . 34

4.18 A ��;���«��vï�x § . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

4.19Qv������vwv�v���vx

URL���\��x�j

. . . . . . . . . . . . . . . . . 35

– v –

Page 7: Policy-based Design of School NetworksAbstract Policy-based Design of School Networks Tanabe Junichiro In today’s schools, computerization is progressing quickly. Computers tends

� �D

5.1V�Wv»��\���������vw��v���Þx�zv{�|

. . . . . . . . . . . . . . . . . . . . 36

5.2:��vð�� B ï � �vw���� . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

5.3 � �\��x / ;�P�1�:���Q�~����� . . . . . . . . . . . . . . . . . . . . . . 42

5.4 ��� b�c � �v���\�\��¬vð�ñ�ò . . . . . . . . . . . . . . . . . . . . . . . . 43

5.5Qv����ð�g���w�������\

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

– vi –

Page 8: Policy-based Design of School NetworksAbstract Policy-based Design of School Networks Tanabe Junichiro In today’s schools, computerization is progressing quickly. Computers tends

3.1���v��«ëñ��vª�«�¬

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

3.2Ýv�'2�ðU¤���3\«�ñ��vª�«�¬

. . . . . . . . . . . . . . . . . . . . . . . . . 14

4.1 ��  w?���v��«�ñ���Yv®�w?j . . . . . . . . . . . . . . . . . . . . . . . . . 19

4.2í�îv��«��vïv¬vð�ñ�òvw�¡ Â�¢�£

. . . . . . . . . . . . . . . . . . . . . . . 24

5.1:��vð�� B ï � ��z�w�¤�¥ . . . . . . . . . . . . . . . . . . . . . . . . . . 38

5.2 1 ¦ w�§�¨ B ï � ��©�ª . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

5.3í�îv��«��vïv¬vð�ñ�òvw J »��\z�« � ½ w�N�O . . . . . . . . . . . . . . . . 40

5.4t�¬�w?­�® Á N�O�¯��

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

5.5 MPEG1~�����

(1.5Mbps) . . . . . . . . . . . . . . . . . . . . . . . . 44

5.6 MPEG1~�����

(10Mbps) . . . . . . . . . . . . . . . . . . . . . . . . 44

5.7ðU��«ë��ò�°\~���ñ����

(1.5Mbps) . . . . . . . . . . . . . . . . . . . . . 44

5.8ðU��«ë��ò�°\~���ñ����

(10Mbps) . . . . . . . . . . . . . . . . . . . . . . 45

5.9��X ��¬v��Ýv�và�wvð�±\����z�­�h?Yv®

. . . . . . . . . . . . . . . . . . . 46

5.10��X ��¬v��Ýv�và J�² }���yvð�;v� � �\��w�¤�¥ . . . . . . . . . . . . . . . 47

5.11Ë�³v�K���������vw

HUBw�:v����w��v�

. . . . . . . . . . . . . . . . . . 48

– vii –

Page 9: Policy-based Design of School NetworksAbstract Policy-based Design of School Networks Tanabe Junichiro In today’s schools, computerization is progressing quickly. Computers tends

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– 1 –

Page 10: Policy-based Design of School NetworksAbstract Policy-based Design of School Networks Tanabe Junichiro In today’s schools, computerization is progressing quickly. Computers tends

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– 2 –

Page 11: Policy-based Design of School NetworksAbstract Policy-based Design of School Networks Tanabe Junichiro In today’s schools, computerization is progressing quickly. Computers tends

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Page 15: Policy-based Design of School NetworksAbstract Policy-based Design of School Networks Tanabe Junichiro In today’s schools, computerization is progressing quickly. Computers tends

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Page 24: Policy-based Design of School NetworksAbstract Policy-based Design of School Networks Tanabe Junichiro In today’s schools, computerization is progressing quickly. Computers tends

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Page 29: Policy-based Design of School NetworksAbstract Policy-based Design of School Networks Tanabe Junichiro In today’s schools, computerization is progressing quickly. Computers tends

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Page 31: Policy-based Design of School NetworksAbstract Policy-based Design of School Networks Tanabe Junichiro In today’s schools, computerization is progressing quickly. Computers tends

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Page 35: Policy-based Design of School NetworksAbstract Policy-based Design of School Networks Tanabe Junichiro In today’s schools, computerization is progressing quickly. Computers tends

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Page 37: Policy-based Design of School NetworksAbstract Policy-based Design of School Networks Tanabe Junichiro In today’s schools, computerization is progressing quickly. Computers tends

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Page 41: Policy-based Design of School NetworksAbstract Policy-based Design of School Networks Tanabe Junichiro In today’s schools, computerization is progressing quickly. Computers tends

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Page 46: Policy-based Design of School NetworksAbstract Policy-based Design of School Networks Tanabe Junichiro In today’s schools, computerization is progressing quickly. Computers tends

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Page 47: Policy-based Design of School NetworksAbstract Policy-based Design of School Networks Tanabe Junichiro In today’s schools, computerization is progressing quickly. Computers tends

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Page 48: Policy-based Design of School NetworksAbstract Policy-based Design of School Networks Tanabe Junichiro In today’s schools, computerization is progressing quickly. Computers tends

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Page 49: Policy-based Design of School NetworksAbstract Policy-based Design of School Networks Tanabe Junichiro In today’s schools, computerization is progressing quickly. Computers tends

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Page 50: Policy-based Design of School NetworksAbstract Policy-based Design of School Networks Tanabe Junichiro In today’s schools, computerization is progressing quickly. Computers tends

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Page 51: Policy-based Design of School NetworksAbstract Policy-based Design of School Networks Tanabe Junichiro In today’s schools, computerization is progressing quickly. Computers tends

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Page 52: Policy-based Design of School NetworksAbstract Policy-based Design of School Networks Tanabe Junichiro In today’s schools, computerization is progressing quickly. Computers tends

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Page 53: Policy-based Design of School NetworksAbstract Policy-based Design of School Networks Tanabe Junichiro In today’s schools, computerization is progressing quickly. Computers tends

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Page 54: Policy-based Design of School NetworksAbstract Policy-based Design of School Networks Tanabe Junichiro In today’s schools, computerization is progressing quickly. Computers tends

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Page 55: Policy-based Design of School NetworksAbstract Policy-based Design of School Networks Tanabe Junichiro In today’s schools, computerization is progressing quickly. Computers tends

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Page 56: Policy-based Design of School NetworksAbstract Policy-based Design of School Networks Tanabe Junichiro In today’s schools, computerization is progressing quickly. Computers tends

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Page 58: Policy-based Design of School NetworksAbstract Policy-based Design of School Networks Tanabe Junichiro In today’s schools, computerization is progressing quickly. Computers tends

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Page 59: Policy-based Design of School NetworksAbstract Policy-based Design of School Networks Tanabe Junichiro In today’s schools, computerization is progressing quickly. Computers tends

�� �!�÷�Æ 3�ã,«KÇ�� ²�È ��É+ | r Û�Ê C�ü�ËK¢ ��r�Ì�Í CËKÎ�Ï%B}q Ï }q µ ÐÑÒ Ê à l�m�� ¸ Ú�P Ñ à Ò�Ó�ÔÕ�Ö ��× � À,« ã�Ø�Ù + ³Ú ¦�pÛ6�Û²ZÈ �ÛÉÜ+ | r�ÌÛÍ CÜËÝÎZÏÜ%ßÞZà + q µÛÐÜÑ Ò Ê à lZmr� ¸ ÚÜP Ñ à ÒÜá`âÛãÛä �× r�µ�ÐÑ Ò Ê à l�m�� ¸ ÚP Ñ à Ò�å,æKç ��× � À þ ;Kè�é�ê + ¦�pÛ6��²�È�ã,«�Ç��� �! � ã�}| r �ë ÷ ��ì CËKÎ Ï r ËK¢ � %�}q Ï }�q µ�ÐÑ Ò Ê à lm�� ¸ ÚP Ñ à Ò í�î�ï�ð Î�´ � À þ ;Kè�é�ê + ¦�pñ6�Z Z! � ãZ}^| r ËÝÎ Ï^% #  �¡ q µZÐ^Ñ Ò Ê à lZmZ��� ò,ó,-ôw`�^õ Ù � ¸Zö æ tZ÷Zrø ù ú ® û ü ý þ)÷Bÿ������ ÷ r NTT

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Page 60: Policy-based Design of School NetworksAbstract Policy-based Design of School Networks Tanabe Junichiro In today’s schools, computerization is progressing quickly. Computers tends

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è lX\C ��e V %X¬gf�� �O/hXi + | Z ú�4 ��e V Z�j N Z�k�l -”, m � Ò 7 � � 7 ý 3 ý²�È n22,pp.61-62,1988

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[13] � T���� � r ”����� c }�_X� � ú�4 ��e V���� Z ÁZ ” r �Û��� 4 Ê 7���� Ê 7��

� ���6���

[14] http://www.sun.co.jp/software/consumer-embedded/card/

[15] � ö �,ÓZÔ^ÕßÖ

,” w { D zX��� Q w e��~�����Zü SASZ ¿���N }ZÉ pX� c�d ”, 5

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[16] á Ê � rL  æA¡/¢ ,

椣 ¥ � &,Ó³Ô Õ�Ö

, ”SAS ¦ � � 5 ��ü6§*K Y � q HTTP¸ e

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Page 61: Policy-based Design of School NetworksAbstract Policy-based Design of School Networks Tanabe Junichiro In today’s schools, computerization is progressing quickly. Computers tends

Ã�Ä�È ¨

Q Z ¿ � rª© M6«�� � ��ü ”, l�m ¬ ­ 7 ý �6® Ê ý ( ¯ 63 °�� � )k ±

3, pp.535-536,

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No.544, pp.25-30, 1999.01

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