arch の輪講会です

1. ヲゎ㻌TCP/IP
Vol.1㻌䝥䝻䝖䝁䝹
➨1❶㻌䜲䞁䝖䝻䝎䜽䝅䝵䞁
pasora

2. ㍯ㅮ䛻䛴䛔䛶
• ⠊ᅖ䛿䜏䜣䛺ㄞ䜣䛷䛟䜛
– 䜟䛛䜙䛺䛔䛸䛣䜝䜢ᢕᥱ䛧䛶䛚䛟䛸
• 䜏䜣䛺䜟䛛䜙䛺䛔䛛䜙ཧຍ䛧䛶䜛
– 䜟䛛䜙䛺䛔᫬䛿䛭䛾ሙ䛷䛝䛟
• 䝇䝷䜲䝗స䜚䛿ຮᙉ䛻䛺䜛
– 䛭䛾䛖䛱័䜜䜎䛩

3. 1.1㻌䜲䞁䝖䝻䝎䜽䝅䝵䞁

4. 䜲䞁䝖䝻䝎䜽䝅䝵䞁
• TCP/IP䝥䝻䝖䝁䝹⩌䛿
䛒䜙䜖䜛䝁䞁䝢䝳䞊䝍㛫䛷┦஫㏻ಙྍ⬟
• 䛂䜎䛥䛛䛣䛣䜎䛷ᬑཬ䛩䜛䛸䛿䛃
• 䜸䞊䝥䞁䝅䝇䝔䝮

5. 1.2㻌㝵ᒙ໬

6. TCP/IP䛾4㝵ᒙ䝅䝇䝔䝮
• ྛ㝵ᒙ䛿㏻ಙ䛾␗䛺䜛
┦䛻ᑐ䛧䛶㈐௵䜢ᣢ䛴(䠛)
䜰䝥䝸䜿䞊䝅䝵䞁ᒙ
䝖䝷䞁䝇䝫䞊䝖ᒙ
䝛䝑䝖䝽䞊䜽ᒙ
䝸䞁䜽ᒙ

7. 䝸䞁䜽ᒙ
(䝕䞊䝍䝸䞁䜽ᒙ䞉䝛䝑䝖䝽䞊䜽䜲䞁䝍䝣䜵䞊䝇ᒙ)
• 䝕䝞䜲䝇䝗䝷䜲䝞䛸
䜲䞁䝍䝣䜵䞊䝇䜹䞊䝗
䜰䝥䝸䜿䞊䝅䝵䞁ᒙ
䝖䝷䞁䝇䝫䞊䝖ᒙ
䝛䝑䝖䝽䞊䜽ᒙ
䝸䞁䜽ᒙ

8. 䝛䝑䝖䝽䞊䜽ᒙ(䜲䞁䝍䞊䝛䝑䝖ᒙ)
• 䝟䜿䝑䝖䛾⛣ື䜢ไᚚ
– 䝹䞊䝔䜱䞁䜾䜒䛣䛣
• IP
• ICMP
• IGMP
䜰䝥䝸䜿䞊䝅䝵䞁ᒙ
䝖䝷䞁䝇䝫䞊䝖ᒙ
䝛䝑䝖䝽䞊䜽ᒙ
䝸䞁䜽ᒙ

9. 䝖䝷䞁䝇䝫䞊䝖ᒙ
• 䜰䝥䝸䜿䞊䝅䝵䞁ᒙ䛻ᑐ䛧
2ྎ䛾䝩䝇䝖㛫㏻ಙ䜢ᥦ౪
• TCP
• UDP
䜰䝥䝸䜿䞊䝅䝵䞁ᒙ
䝖䝷䞁䝇䝫䞊䝖ᒙ
䝛䝑䝖䝽䞊䜽ᒙ
䝸䞁䜽ᒙ

10. Transmission
Control
Protocol
• 2ྎ䛾䝩䝇䝖㛫䛷㧗ಙ㢗䛺
䝕䞊䝍䛾ὶ䜜䜢ᥦ౪
• 䜰䝥䝸䜿䞊䝅䝵䞁ᒙ䛛䜙
ཷ䛡ྲྀ䛳䛯䝕䞊䝍䜢㐺ษ䛻
ศ๭䞉㌿㏦䞉ཷಙ䞉㆑ู
䜰䝥䝸䜿䞊䝅䝵䞁ᒙ
䝖䝷䞁䝇䝫䞊䝖ᒙ
䝛䝑䝖䝽䞊䜽ᒙ
䝸䞁䜽ᒙ

11. User
Datagram
Protocol
• ᴟ䜑䛶༢⣧
• 䛂䝕䞊䝍䜾䝷䝮䛃䛸䛔䛖
䝟䜿䝑䝖䜢㌿㏦䛩䜛
– ฿㐩ಖド䛿䛺䛔
• ಙ㢗ᛶ䜢ಖド䛩䜛䛾䛿
䜰䝥䝸䜿䞊䝅䝵䞁ᒙ
䜰䝥䝸䜿䞊䝅䝵䞁ᒙ
䝖䝷䞁䝇䝫䞊䝖ᒙ
䝛䝑䝖䝽䞊䜽ᒙ
䝸䞁䜽ᒙ

12. 䜰䝥䝸䜿䞊䝅䝵䞁ᒙ
• ≉ᐃ䜰䝥䝸䜿䞊䝅䝵䞁䛾
ヲ⣽䛺ືస䜢ฎ⌮
• DHCP,
DNS,
FTP,
HTTP,
NTP,
IMAP,
POP,
SMTP,
SSH,
SSL,
LDAP,
Telnet,
etc...
䜰䝥䝸䜿䞊䝅䝵䞁ᒙ
䝖䝷䞁䝇䝫䞊䝖ᒙ
䝛䝑䝖䝽䞊䜽ᒙ
䝸䞁䜽ᒙ

13. ᅗ1.2:LANୖ䛾2ྎ䛾䝩䝇䝖䛜
FTP䜢ᐇ⾜䛧䛶䛔䜛ሙྜ
FTP
䜽䝷䜲䜰䞁䝖
TCP
IP
Ethernet
䝗䝷䜲䝞
FTP
䝃䞊䝞
TCP
IP
Ethernet
䝗䝷䜲䝞
Ethernet

14. ྠ୍ᒙ䛾┦ᑐ䝥䝻䝖䝁䝹㛫㏻ಙ䜢ฎ⌮䛩䜛
1䛴௨ୖ䛾䝥䝻䝖䝁䝹䜢ᣢ䛴
FTP
䜽䝷䜲䜰䞁䝖
TCP
IP
Ethernet
䝗䝷䜲䝞
FTP
䝃䞊䝞
TCP
IP
Ethernet
䝗䝷䜲䝞
FTP䝥䝻䝖䝁䝹
TCP䝥䝻䝖䝁䝹
IP䝥䝻䝖䝁䝹
Ethernet䝥䝻䝖䝁䝹
Ethernet

15. ୍⯡ⓗ䛻䜰䝥䝸䜿䞊䝅䝵䞁ᒙ䛿䝴䞊䝄䝥䝻䝉䝇䚸
௨ୗ3䛴䛾ᒙ䛿䜹䞊䝛䝹䛻ᐇ⿦䛥䜜䜛
FTP
䜽䝷䜲䜰䞁䝖
TCP
IP
Ethernet
䝗䝷䜲䝞
FTP
䝃䞊䝞
TCP
IP
Ethernet
䝗䝷䜲䝞
FTP䝥䝻䝖䝁䝹
TCP䝥䝻䝖䝁䝹
IP䝥䝻䝖䝁䝹
Ethernet䝥䝻䝖䝁䝹
䝴䞊䝄䝥䝻䝉䝇
䜰䝥䝸䜿䞊䝅䝵䞁䜢ฎ⌮
䜹䞊䝛䝹
㏻ಙ䜢ฎ⌮
Ethernet

16. ୍⯡ⓗ䛻䜰䝥䝸䜿䞊䝅䝵䞁ᒙ䛿䝴䞊䝄䝥䝻䝉䝇䚸
௨ୗ3䛴䛾ᒙ䛿䜹䞊䝛䝹䛻ᐇ⿦䛥䜜䜛
FTP
䜽䝷䜲䜰䞁䝖
TCP
IP
Ethernet
䝗䝷䜲䝞
FTP
䝃䞊䝞
TCP
IP
䜰䝥䝸䜿䞊䝅䝵䞁䛻䛿
Ethernet
䝗䝷䜲䝞
FTP䝥䝻䝖䝁䝹
TCP䝥䝻䝖䝁䝹
IP䝥䝻䝖䝁䝹
Ethernet䝥䝻䝖䝁䝹
䝕䞊䝍⛣ື䛻䛿
㛵▱䛧䛺䛔
୍ษㄆ㆑䛧䛺䛔
Ethernet

17. FTP
䜽䝷䜲䜰䞁䝖
TCP
IP
Ethernet
䝗䝷䜲䝞
FTP
䝃䞊䝞
TCP
IP
Ethernet
䝗䝷䜲䝞
FTP䝥䝻䝖䝁䝹
TCP䝥䝻䝖䝁䝹
IP䝥䝻䝖䝁䝹
Ethernet䝥䝻䝖䝁䝹
䝴䞊䝄䝥䝻䝉䝇
䜰䝥䝸䜿䞊䝅䝵䞁䜢ฎ⌮
䜹䞊䝛䝹
㏻ಙ䜢ฎ⌮
Ethernet
䛣䜜䛜TCP/IP䝥䝻䝖䝁䝹⩌

18. ᅗ1.3:䝹䞊䝍䛷᥋⥆䛥䜜䛯
2䛴䛾䝛䝑䝖䝽䞊䜽
FTP
䜽䝷䜲䜰䞁䝖
TCP
IP
Ethernet
䝗䝷䜲䝞
FTP
䝃䞊䝞
TCP
IP
䝖䞊䜽䞁䝸䞁䜾
䝗䝷䜲䝞
FTP䝥䝻䝖䝁䝹
TCP䝥䝻䝖䝁䝹
IP䝥䝻䝖䝁䝹
Ethernet
䝥䝻䝖䝁䝹
Ethernet
IP
Ethernet
䝗䝷䜲䝞
䝖䞊䜽䞁䝸䞁䜾
䝖䞊䜽䞁䝸䞁䜾
䝗䝷䜲䝞
IP䝥䝻䝖䝁䝹
䝖䞊䜽䞁䝸䞁䜾
䝥䝻䝖䝁䝹

19. 䛣䜜䛜䜶䞁䝗䝅䝇䝔䝮
FTP
䜽䝷䜲䜰䞁䝖
TCP
IP
Ethernet
䝗䝷䜲䝞
FTP
䝃䞊䝞
TCP
IP
䝖䞊䜽䞁䝸䞁䜾
䝗䝷䜲䝞
FTP䝥䝻䝖䝁䝹
TCP䝥䝻䝖䝁䝹
IP䝥䝻䝖䝁䝹
Ethernet
䝥䝻䝖䝁䝹
Ethernet
IP
Ethernet
䝗䝷䜲䝞
䝖䞊䜽䞁䝸䞁䜾
䝖䞊䜽䞁䝸䞁䜾
䝗䝷䜲䝞
IP䝥䝻䝖䝁䝹
䝖䞊䜽䞁䝸䞁䜾
䝥䝻䝖䝁䝹

20. 䛣䛔䛴䛜୰⥅䝅䝇䝔䝮(䝹䞊䝍)
FTP
䜽䝷䜲䜰䞁䝖
TCP
IP
Ethernet
䝗䝷䜲䝞
FTP
䝃䞊䝞
TCP
IP
䝖䞊䜽䞁䝸䞁䜾
䝗䝷䜲䝞
FTP䝥䝻䝖䝁䝹
TCP䝥䝻䝖䝁䝹
IP䝥䝻䝖䝁䝹
Ethernet
䝥䝻䝖䝁䝹
Ethernet
IP
Ethernet
䝗䝷䜲䝞
䝖䞊䜽䞁䝸䞁䜾
䝖䞊䜽䞁䝸䞁䜾
䝗䝷䜲䝞
IP䝥䝻䝖䝁䝹
䝖䞊䜽䞁䝸䞁䜾
䝥䝻䝖䝁䝹

21. 䜰䝥䝸䜿䞊䝅䝵䞁ᒙ䛸䝖䝷䞁䝇䝫䞊䝖ᒙ䛿
䜶䞁䝗䝒䞊䜶䞁䝗ᆺ䝥䝻䝖䝁䝹
FTP
䜽䝷䜲䜰䞁䝖
TCP
IP
Ethernet
䝗䝷䜲䝞
FTP
䝃䞊䝞
TCP
IP
䝖䞊䜽䞁䝸䞁䜾
䝗䝷䜲䝞
FTP䝥䝻䝖䝁䝹
TCP䝥䝻䝖䝁䝹
IP䝥䝻䝖䝁䝹
Ethernet
䝥䝻䝖䝁䝹
Ethernet
IP
Ethernet
䝗䝷䜲䝞
䝖䞊䜽䞁䝸䞁䜾
䝖䞊䜽䞁䝸䞁䜾
䝗䝷䜲䝞
IP䝥䝻䝖䝁䝹
䝖䞊䜽䞁䝸䞁䜾
䝥䝻䝖䝁䝹

22. 䝛䝑䝖䝽䞊䜽ᒙ䛿䝩䝑䝥䝞䜲䝩䝑䝥ᆺ䝥䝻䝖䝁䝹
FTP
䜽䝷䜲䜰䞁䝖
TCP
IP
Ethernet
䝗䝷䜲䝞
FTP
䝃䞊䝞
TCP
IP
䝖䞊䜽䞁䝸䞁䜾
䝗䝷䜲䝞
FTP䝥䝻䝖䝁䝹
TCP䝥䝻䝖䝁䝹
IP䝥䝻䝖䝁䝹
Ethernet
䝥䝻䝖䝁䝹
Ethernet
IP
Ethernet
䝗䝷䜲䝞
䝖䞊䜽䞁䝸䞁䜾
䝖䞊䜽䞁䝸䞁䜾
䝗䝷䜲䝞
IP䝥䝻䝖䝁䝹
䝖䞊䜽䞁䝸䞁䜾
䝥䝻䝖䝁䝹

23. 䝹䞊䝍䛾ᙺ๭
• ␗䛺䜛䝛䝑䝖䝽䞊䜽䜢᥋⥆䛩䜛
– ྠ୍䝛䝑䝖䝽䞊䜽㛫䛷䜒(Ethernet
-­‐
Ethernet㻌䛸䛛)
– ␗䛺䜛䝛䝑䝖䝽䞊䜽㛫䛷䜒(Ethernet
-­‐
AppleTalk㻌䛸䛛)

24. Ethernetୖ䛾䛒䜙䜖䜛䝩䝇䝖䛿
䝖䞊䜽䞁䝸䞁䜾ୖ䛾䛒䜙䜖䜛䝩䝇䝖䛸㏻ಙྍ⬟
FTP
䜽䝷䜲䜰䞁䝖
TCP
IP
Ethernet
䝗䝷䜲䝞
FTP
䝃䞊䝞
TCP
IP
䝖䞊䜽䞁䝸䞁䜾
䝗䝷䜲䝞
FTP䝥䝻䝖䝁䝹
TCP䝥䝻䝖䝁䝹
IP䝥䝻䝖䝁䝹
Ethernet
䝥䝻䝖䝁䝹
Ethernet
IP
Ethernet
䝗䝷䜲䝞
䝖䞊䜽䞁䝸䞁䜾
䝖䞊䜽䞁䝸䞁䜾
䝗䝷䜲䝞
IP䝥䝻䝖䝁䝹
䝖䞊䜽䞁䝸䞁䜾
䝥䝻䝖䝁䝹

25. 䜰䝥䝸䜿䞊䝅䝵䞁䛛䜙䝛䝑䝖䝽䞊䜽㛫᥋⥆䛾
≀⌮ⓗ䝺䜲䜰䜴䝖䛿ぢ䛘䛺䛔(䜲䞁䝍䞊䝛䝑䝖䛾୍┠ⓗ)
→䝛䝑䝖䝽䞊䜽ᒙ䛸䝖䝷䞁䝇䝫䞊䝖ᒙ䛾ศ㞳
FTP
䜽䝷䜲䜰䞁䝖
TCP
IP
Ethernet
䝗䝷䜲䝞
FTP
䝃䞊䝞
TCP
IP
䝖䞊䜽䞁䝸䞁䜾
䝗䝷䜲䝞
FTP䝥䝻䝖䝁䝹
TCP䝥䝻䝖䝁䝹
IP䝥䝻䝖䝁䝹
Ethernet
䝥䝻䝖䝁䝹
Ethernet
IP
Ethernet
䝗䝷䜲䝞
䝖䞊䜽䞁䝸䞁䜾
䝖䞊䜽䞁䝸䞁䜾
䝗䝷䜲䝞
IP䝥䝻䝖䝁䝹
䝖䞊䜽䞁䝸䞁䜾
䝥䝻䝖䝁䝹

26. 1.3
TCP/IP䛾㝵ᒙ໬(┬␎)

27. 1.4
INTERNET
䜰䝗䝺䝇

28. IP䜰䝗䝺䝇-­‐䜽䝷䝇䝣䝹䜰䝗䝺䝑䝅䞁䜾
• 32bit䛾IPv4䜰䝗䝺䝇䜢ୖ఩4bit䛷༊ู
䜽䝷䝇A
0 7bit
0.0.0.0-­‐127.255.255.255 䝛䝑䝖ID
24bit
䝩䝇䝖ID
䜽䝷䝇B
1 0 14bit
128.0.0.0-­‐191.255.255.255 䝛䝑䝖ID
16bit
䝩䝇䝖ID
䜽䝷䝇C
1 1 0 21bit
192.0.0.0-­‐223.255.255.255 䝛䝑䝖ID
8bit
䝩䝇䝖ID
䜽䝷䝇D
1 1 1 0 28bit
224.0.0.0-­‐239.255.255.255 䝬䝹䝏䜻䝱䝇䝖䞉䜾䝹䞊䝥ID
䜽䝷䝇E
240.0.0.0-­‐247.255.255.255 1 1 1 1 ᑗ᮶䛾䛯䜑䛻ண⣙(◊✲⏝)

29. IP䜰䝗䝺䝇-­‐䜽䝷䝇䝣䝹䜰䝗䝺䝑䝅䞁䜾
• IP䜰䝗䝺䝇䛿InterNIC䛜୍ඖ⟶⌮
– ඲䛶䛾䜲䞁䝍䝣䜵䞊䝇䛜ᅛ᭷䛾䜰䝗䝺䝇
• 䝛䝑䝖ID䜢๭䜚ᙜ䛶䜙䜜䛯⪅䛿䝩䝇䝖IDᩘศ䛾
䜰䝗䝺䝇䜢⮬⏤䛻౑⏝䛷䛝䜛
– 䜽䝷䝇A䛺䜙24bit㻌⣙1670୓
• 㠀ຠ⋡䛺䛾䛷⌧ᅾ䛿౑䜟䜜䛶䛔䛺䛔᪉ᘧ
– 䜽䝷䝇䝺䝇䜰䝗䝺䝑䝅䞁䜾䜈

30. 1.5
DNS:䝗䝯䜲䞁䝛䞊䝮䝅䝇䝔䝮

31. Domain
Name
System
• IP䜰䝗䝺䝇䚸ぬ䛘䜙䜜䛺䛔(IPv6䜘䜚䛿䛔䛔䛡䛹)
– SFC䛾䝨䞊䝆䛿133.27.4.220
• ྡ๓䛜䛒䜜䜀ぬ䛘䜔䛩䛟䛺䜛
– SFC䛾䝨䞊䝆䛿㻌www.sfc.keio.ac.jp㻌䛻䛧䜘䛖
• DNS䛿䜰䝗䝺䝇䛸ྡ๓䛾᝟ሗ䜢᱁⣡䛩䜛
ศᩓ䝕䞊䝍䝧䞊䝇

32. 1.6
䜹䝥䝉䝹໬

33. TCP䛻䛚䛡䜛䜹䝥䝉䝹໬
䝴䞊䝄䝕䞊䝍 䜰䝥䝸䜿䞊䝅䝵䞁
+䜰䝥䝸䜿䞊䝅䝵䞁䝦䝑䝎
䜰䝥䝸䜿䞊䝅䝵䞁䝕䞊䝍
䜰䝥䝸䜿䞊䝅䝵䞁䝕䞊䝍 TCP
+TCP䝦䝑䝎 TCP䝉䜾䝯䞁䝖
TCP䝉䜾䝯䞁䝖 IP
+IP䝦䝑䝎 IP䝕䞊䝍䜾䝷䝮
Ethernet䝗䝷䜲䝞
+Ethernet䝦䝑䝎䚸䝖䝺䞊䝷 IP䝕䞊䝍䜾䝷䝮 Ethernet䝣䝺䞊䝮
Ethernet䝣䝺䞊䝮䛿46ࠥ1500䝞䜲䝖
䝆䝱䞁䝪䝣䝺䞊䝮䛿䛭䜜௨ୖ

34. 䝦䝑䝎䛾㆑ูᏊ
• IP䝦䝑䝎䛿䝥䝻䝖䝁䝹䝣䜱䞊䝹䝗䛻8bit್䜢᱁⣡
– 1(ICMP),
2(IGMP),
6(TCP),
17(UDP)
• TCP䛸UDP䛿䜰䝥䝸䜿䞊䝅䝵䞁㆑ู䛻䝫䞊䝖␒ྕ
– Ⓨಙඖ䛸㏦ಙඛ䛾䝫䞊䝖␒ྕ䜢䝦䝑䝎䛻᱁⣡
• Ethernet䝦䝑䝎䛻䛿
16bit䛾䝣䝺䞊䝮䝍䜲䝥䝣䜱䞊䝹䝗
– 䛹䛾䝛䝑䝖䝽䞊䜽ᒙ䝥䝻䝖䝁䝹䛜⏕ᡂ䛧䛯䝣䝺䞊䝮䛛

35. 1.7
䝕䝬䝹䝏䝥䝺䜽䝇

36. 䝕䝬䝹䝏䝥䝺䜽䝇
• Ethernet䝣䝺䞊䝮䛜ཷಙ䛥䜜䜛䛸
䝥䝻䝖䝁䝹䞉䝇䝍䝑䜽䜢ୖ᪼䛧
䝦䝑䝎䛜㡰䛻ྲྀ䜚㝖䛛䜜䛶䛔䛟
• ྲྀ䜚㝖䛟㝿䛻ㄞ䜏㎸䜣䛰䝦䝑䝎䛻䜘䛳䛶
ୖ఩䝥䝻䝖䝁䝹䜢Ỵᐃ

37. 1.8㻌䜽䝷䜲䜰䞁䝖/䝃䞊䝞䞉䝰䝕䝹

38. 䜽䝷䜲䜰䞁䝖/䝃䞊䝞䞉䝰䝕䝹
཯᚟䝃䞊䝞
1. 䜽䝷䜲䜰䞁䝖䛛䜙䛾せồ䜢ᚅ䛴
2. 䜽䝷䜲䜰䞁䝖䛾せồ䜢ฎ⌮䛩䜛
3. せồ䜢㏦ಙ䛧䛶䛝䛯䜽䝷䜲䜰䞁䝖䛻ᛂ⟅䛩䜛
4. 1䛻ᡠ䜛

39. 䜽䝷䜲䜰䞁䝖/䝃䞊䝞䞉䝰䝕䝹
୪ิ䝃䞊䝞
1. 䜽䝷䜲䜰䞁䝖䛛䜙䛾せồ䜢ᚅ䛴
2. せồ䜢ฎ⌮䛩䜛䛯䜑䛾䝃䞊䝞䜢㉳ື
– 䝥䝻䝉䝇䚸䝍䝇䜽䚸䝇䝺䝑䝗
– ඲せồ䜢ฎ⌮⤊஢ᚋ䚸ಟ஢
3. 1䛻ᡠ䜛

40. 1.9
䝫䞊䝖␒ྕ

41. 䝫䞊䝖␒ྕ
• TCP䛸UDP䛿䜰䝥䝸䜿䞊䝅䝵䞁㆑ู䛻
16bit䛾䝫䞊䝖␒ྕ䜢౑⏝䛩䜛
• 䝃䞊䝞䛿䜴䜵䝹䝜䜴䞁䝫䞊䝖(1ࠥ1023)䜢౑⏝
– TCP䛷䛿80(HTTP),
22(SSH),
23(Telnet)䛺䛹
• 䜽䝷䜲䜰䞁䝖䛿䜶䝣䜵䝯䝷䝹(▷࿨)䝫䞊䝖(1024ࠥ)
– 䝴䞊䝄䛜䝃䞊䝡䝇䜢ᚲせ䛸䛧䛶䛔䜛㛫䛾䜏Ꮡᅾ

42. 1.10㻌ᶆ‽໬䝥䝻䝉䝇

43. Internet
Society
• h^p://www.internetsociety.org/
• ඲ୡ⏺䝺䝧䝹䛷䛾◊✲㏻ಙ
䜲䞁䝣䝷䝇䝖䝷䜽䝏䝱䛸䛧䛶䛾Internet䛾
ᨵ㠉䛸ᡂ㛗䜢䝃䝫䞊䝖䚸ಁ㐍

44. Internet
Architecture
Board
• h^p://www.iab.org/
• ᢏ⾡㠃䛻䛴䛔䛶⟶⌮䞉ㄪᩚ
• Internet䛾ᶆ‽௙ᵝ䛻䛴䛔䛶㈐௵

45. Internet
Engineering
Task
Force
• h^ps://www.iea.org/
• ▷ᮇⓗ䛺ᶆ‽⟇ᐃ䜾䝹䞊䝥

46. Internet
Research
Task
Force
• h^ps://ira.org/
• 㛗ᮇ◊✲䝥䝻䝆䜵䜽䝖䜢᥎㐍

47. 1.11
RFC

48. Request
For
Comment
• 䜲䞁䝍䞊䝛䝑䝖䛻㛵䛩䜛
඲බᘧᶆ‽䛿RFC᭩ᘧ䛷Ⓨ⾜䛥䜜䛶䛔䜛
• h^p://tools.iea.org/rfc/

49. ๭䜚ᙜ䛶␒ྕRFC
• Internet䝥䝻䝖䝁䝹䛷⏝䛔䜙䜜䜛
䝬䝆䝑䜽䝘䞁䝞䞊䜔ᐃᩘ䛜ᐃ⩏
• ᮏ䛷䛿
RFC
1700
䛸᭩䛔䛶䛒䜛䛜
⌧ᅾ䛿
RFC
3232
– We
expect
this
series
to
be
revived
in
the
future
by
the
new
IANA
organiza;on.
䛸䛧䛶୰㌟䛿グ㏙䛺䛧

50. Internet
Official
Protocol
Standards
• ᵝ䚻䛺Internet䝥䝻䝖䝁䝹䛾ᶆ‽໬䛾
㐍ᤖ≧ἣ䜢♧䛩
• ᮏ䛷䛿㻌RFC
1920
䛰䛜⌧ᅾ䛿
RFC
7100
–
䝍䜲䝖䝹㻌Re;rement
of
the
“Internet
Official
Protocol
Standards”
Summary
Document

51. 䝩䝇䝖せồRFC
• RFC
1122
䛿
䝸䞁䜽ᒙ䚸䝛䝑䝖䝽䞊䜽ᒙ䚸䝖䝷䞁䝇䝫䞊䝖ᒙ
• RFC
1123
䛿䜰䝥䝸䜿䞊䝅䝵䞁ᒙ
• ⌧ᅾከᩘ䛾⿵㊊䛜ู䝗䜻䝳䝯䞁䝖䛻䛒䜛
• 䝥䝻䝖䝁䝹䛾ヲ⣽䛺᝟ሗ䜢
᥈䛩䛸䛝䛾䝇䝍䞊䝖䝫䜲䞁䝖

52. 䝹䞊䝍せồRFC
• 䝹䞊䝍≉᭷䛾せồ䜢ᐃ⩏

53. 1.12㻌ᶆ‽ⓗ䛺༢⣧䝃䞊䝡䝇

54. ᶆ‽ⓗ䛺༢⣧䝃䞊䝡䝇
ྡ๓ TCP䝫䞊䝖 UDP䝫䞊䝖 RFC 㐺⏝
echo
7 7 862 䜽䝷䜲䜰䞁䝖䛛䜙䛾඲㏦ಙ䝕䞊䝍䜢㏉䛩
discard 9 9 863 䜽䝷䜲䜰䞁䝖䛛䜙䛾඲㏦ಙ䝕䞊䝍䜢◚Რ
dayeme 13 13 867 ᫬㛫䛸᪥௜䜢ே㛫䛜䜟䛛䜛䜘䛖䛻㏉䛩
chargen 19 19 864 䝁䝛䜽䝅䝵䞁䛜ษ䜜䜛䜎䛷charิ䜢㏦ಙ
eme 37 37 868 32bit䝞䜲䝘䝸ᩘ䛷᫬㛫䜢㏉䛩(UNIX
eme)

55. 1.13㻌䜲䞁䝍䞊䝛䝑䝖

56. 䜲䞁䝍䞊䝛䝑䝖
• 䛂䜲䞁䝍䞊䝛䝑䝖䛃䛿ඹ㏻䝥䝻䝖䝁䝹⩌䛻䜘䜛
」ᩘ䝛䝑䝖䝽䞊䜽䛾᥋⥆
• “Internet”䛿TCP/IP䛷┦஫᥋⥆ྍ⬟䛺
䝩䝇䝖䛻䜘䜛኱つᶍ䜲䞁䝍䞊䝛䝑䝖

57. 1.14㻌ᐇ⿦

58. ᐇ⿦
• 4.1aBSD(1981)
• 4.2BSD(1983)
• 4.3BSD(1986)
• 4.3BSD
Tahoe(1988)→Net/1(1989)
• 4.3BSD
Reno(1990)→Net/2(1990)
• 4.4BSD(-­‐Encumbered)(1993)→Net/3(1994)
• 4.4BSD-­‐Lite
Release
2(1995)

59. 1.15
䜰䝥䝸䜿䞊䝅䝵䞁䞉
䚷䚷䚷䝥䝻䜾䝷䝭䞁䜾䞉䜲䞁䝍䝣䜵䞊䝇

60. 䜰䝥䝸䜿䞊䝅䝵䞁䞉䝥䝻䜾䝷䝭䞁䜾䞉䜲䞁䝍䝣䜵䞊䝇
• 䝋䜿䝑䝖(䝞䞊䜽䝺䞊䝋䜿䝑䝖)
• Transport
Layer
Interface(XTI)

61. 1.16㻌䝔䝇䝖䝛䝑䝖䝽䞊䜽

62. 䝔䝇䝖䝛䝑䝖䝽䞊䜽
(⿬⾲⣬䛾ᅗ)

63. 1.17㻌䜎䛸䜑

64. 䜎䛸䜑
• ௒ᚋ㆟ㄽ䛥䜜䜛⏝ㄒ䛺䛹䜢ㄝ᫂䛧䛯
• TCP/IP䝥䝻䝖䝁䝹⩌䛿4ᒙ
– 䝛䝑䝖䝽䞊䜽ᒙ䛸䝖䝷䞁䝇䝫䞊䝖ᒙ䛾༊ู䛿㔜せ

65. ⦎⩦ၥ㢟

66. ⦎⩦ၥ㢟1.1
• 䜽䝷䝇A䛿7bit→᭱኱ᩘ䛿128
• 䜽䝷䝇B䛿14bit→᭱኱ᩘ䛿16384
• 䜽䝷䝇C䛿21bit→᭱኱ᩘ䛿2097152

67. ⦎⩦ၥ㢟1.2
• h^p://www.cc.gatech.edu/fac/
Mostafa.Ammar/7260/history.netcount

68. ⦎⩦ၥ㢟1.2
1
10
100
1000
10000
100000
Jul-­‐88
Dec-­‐88
May-­‐89
Oct-­‐89
Mar-­‐90
Aug-­‐90
Jan-­‐91
Jun-­‐91
Nov-­‐91
Apr-­‐92
Sep-­‐92
Feb-­‐93
Jul-­‐93
Dec-­‐93
May-­‐94
Oct-­‐94
Mar-­‐95
Nets
Nets

69. ⦎⩦ၥ㢟1.2
• 㝈⏺䜢㉸䛘䜛᫬ᮇ䛽䛗…(䜒䛖㉸䛘䛶䜛䛨䜓䜣)

70. ⦎⩦ၥ㢟1.3
RFC1122
1.2.2
Robustness
Principle
Be
liberal
in
what
you
accept,
and
conserva;ve
in
what
you
send

71. ⦎⩦ၥ㢟1.4
• Quote
of
the
Day
䝥䝻䝖䝁䝹䛾䝫䞊䝖␒ྕ䛿17
• RFC
865
䛷ᐃ⩏
• “A
useful
debugging
and
measurement
tool
is
a
quote
of
the
day
service.
A
quote
of
the
day
service
simply
sends
a
short
message
without
regard
to
the
input.”

72. ⦎⩦ၥ㢟1.5
• TCP/IP䜲䞁䝍䞊䝛䝑䝖䛻᥋⥆䛥䜜䛶䛔䜛
– www.sfc.wide.ad.jp?
• ୺IP䜰䝗䝺䝇
– 203.178.142.131
• 䝽䞊䝹䝗䝽䜲䝗Internet䛻᥋⥆
• 䝬䝹䝏䝩䞊䝮䠛
– Ethernet䛰䛡䠛

73. ⦎⩦ၥ㢟1.6
RFC1000
THE
ORIGINS
OF
RFCS
The
basic
ground
rules
were
that
anyone
could
say
anything
and
that
nothing
was
official.
And
to
emphasize
the
point,
I
labeled
the
notes
“Request
for
Comments.”

74. ⦎⩦ၥ㢟1.7

75. ⦎⩦ၥ㢟1.8
• ↓䛔

76. 䛒䜚䛜䛸䛖䛤䛦䛔䜎䛧䛯