䝟
䝟䜿䝑䝖㏻ಙ䛾ྍど㻌
㻌
Visualization of packet communication
ḷ
ḷ
௦᪸㻌㻌 㻘
㻘
㻌 ᒣ
ᒣ㷂ᾈ୍㻌
㻌
Kowa Utashiro and Koichi Yamazaki
⋢ᕝᏛᕤᏛ㒊ࢯࣇࢺ࢙࢘ࢧ࢚ࣥࢫᏛ⛉㸪 194-8610 ᮾி㒔⏫⏣ᕷ⋢ᕝᏛᅬ 6-1-1 Department of Software Science, College of Engineering, Tamagawa University,
6-1-1 Tamagawagakuen, Machida, Tokyo, 194-8610, Japan Abstract
Because of its convenience, most of users utilize the Internet without awareness of data communication. This situation might make the existence of cyberattacks dilute. That should be avoided for the safe use of the Internet. In this paper, we develop a system to visualize the data communication performed by the user’s PC with the Internet. The system would provide users with chances to realize the data communication.
Keywords: packet communication, visualization, Internet Protocol address, cyber attack 1 1㸬㸬ࡣࡌࡵ ♫ᇶ┙ࡋ࡚ᗈࡃᬑཬࡋ㸪⏝⋡ࡀ 80% 1㸧 ࢆ㉸࠼ࡓࣥࢱ࣮ࢿࢵࢺࡣ᪥ᖖ⏕άࡽษࡾ㞳 ࡍࡇࡢ࡛ࡁ࡞࠸ᢏ⾡࡞ࡗ࡚࠸ࡿ㸬ࣥࢱ࣮ࢿ ࢵࢺࢆᨭ࠼ࡿࢹ࣮ࢱ㏻ಙࡣ㸪ᵝࠎ࡞㡿ᇦ࡛⏝ࡉ ࢀ㸪✀ࠎࡢᢏ⾡࡛ᡂࡾ❧ࡗ࡚࠸ࡿ㸬ࡇࢀࡽࡢࢹ࣮ ࢱ㏻ಙࡣ౽ᛶࡀᴟࡵ࡚㧗ࡃ㸪⏝ࡍࡿࡓࡵ↹ 㞧࡞ᡭ⥆ࡁࢆᚲせࡏࡎ㸪ࡑࡢᏑᅾࢆព㆑ࡍࡿࡇ ࡞ࡃ⏝࡛ࡁࡿ㸬ࡇࡢࡇࡣ㸪ᵝࠎ࡞ഃ㠃࠾ ࠸࡚࣓ࣜࢵࢺ࡞ࡿ㸬୍⯡࣮ࣘࢨࡗ࡚ࡣ㸪 SNS ࡸ Web ᳨⣴࠸ࡗࡓྛ✀ࢧ࣮ࣅࢫ࠾࠸࡚㸪 ࢹ࣮ࢱ㏻ಙࢆព㆑ࡍࡿࡇ࡞ࡃ㸪ࡑࡢ⏝㞟୰ ࡛ࡁࡿ㸬୍᪉࡛㸪ࢧࣂ࣮ᨷᧁ⪅ࡗ࡚ࡶ㸪ࢹ ࣮ࢱ㏻ಙࡢᕼⷧࡀ㒔ྜࡢࡼ࠸≧ἣࢆ⏕ࡳฟࡍ㸬 ࢧࣂ࣮ᨷᧁࡢᏑᅾࢆⷧࡵࡿࡽ࡛࠶ࡿ㸬 ᚋࡶࢹ࣮ࢱ㏻ಙࡣⓎᒎࡋ㸪ࡼࡾ౽ᛶࡀ㧗ࡲ ࡾ㸪㌟㏆࡞ࡗ࡚࠸ࡃࡇࡀணࡉࢀࡿ㸬ࢹ࣮ࢱ ㏻ಙࡢࣈ࣮ࣟࢻࣂࣥࢻࡸIoT ᢏ⾡ࡢᬑཬࡣ㸪 ౽ᛶࢆࡁࡃྥୖࡉࡏࡿ࡛࠶ࢁ࠺㸬ࡋࡋ㸪౽ ᛶࡢྥୖࡣ㸪ㄆ㆑ࡢᕼⷧࢆຍ㏿ࡉࡏࡿᠱᛕࡀ࠶ ࡿ㸬⌧ᅾ࠾࠸࡚ࡶ㸪㏻ಙࡢᏑᅾࢆព㆑ࡍࡿࡇ ࡣ⛥࡛࠶ࢁ࠺㸬ࡲࡓ㸪ព㆑ⓗ࡞㏻ಙࡣࡶࡕࢁࢇ㸪 ࣂࢵࢡࢢࣛ࢘ࣥࢻ࡛⛎ᐦ⾜ࢃࢀࡿ㏻ಙࡶᏑ ᅾࡋ࡚࠸ࡿ㸬ᚋ㸪㌟㏆࡞ࡗ࡚࠸ࡃࢹ࣮ࢱ㏻ಙ ᑐࡋ㸪ࡑࡢㄆ㆑ࡀకࢃ࡞࠸≧ែࡣ༴㝤࠸࠼ࡿ㸬 ⌧ᅾ㸪ࢧࣂ࣮ᨷᧁࡢㄆ㆑ࢆ῝ࡵࡼ࠺ࡍࡿᶵ ࡣከࡃᏑᅾࡋ࡚࠸ࡿ㸬୍᪉࡛㸪ࢹ࣮ࢱ㏻ಙࡑࡢ ࡶࡢ↔Ⅼࢆᙜ࡚㸪ࡑࡢㄆ㆑ࢆ῝ࡵࡼ࠺ࡍࡿᶵ ࡣᑡ࡞࠸㸬ᙜ↛࡞ࡀࡽ㸪ࢿࢵࢺ࣮࣡ࢡࢹࣂࢫ ࡣᨷᧁ௨እࡶ㏻ಙࡋ࡚࠸ࡿ㸬ᨷᧁࡢࡳὀ ┠ࡍࡿࡢ࡛ࡣ࡞ࡃ㸪ࡑࢀࢆໟᣓⓗㄆ㆑࡛ࡁࡿࢹ ࣮ࢱ㏻ಙࡑࡢࡶࡢ↔Ⅼࢆᙜ࡚ࡿࡇࡶ᭷ព⩏ ࡛࠶ࢁ࠺㸬 ᮏ◊✲࡛ࡣ㸪ࢹ࣮ࢱ㏻ಙࡢෆ㸪ࣃࢣࢵࢺ㏻ಙ ↔Ⅼࢆᙜ࡚ࡿ㸬ࣃࢣࢵࢺ㏻ಙࡢᵝᏊࢆࣜࣝࢱ ࣒ほ ࣭ศᯒࡋ㸪ྍどࡍࡿࣉࣜࢣ࣮ࢩࣙࣥ ࢆ㛤Ⓨࡍࡿ㸬⏝⪅ࡣ୍⯡ⓗ࡞࣮ࣘࢨࢆᐃࡋ㸪 ᑓ㛛ⓗ࡞ሗࡢᥦ♧ࡣ᭱㝈᥍࠼ࡿ㸬ࣃࢣࢵࢺ㏻
ಙࢆྍどࡍࡿࡇ࡛㸪ࡑࡢㄆ㆑ࢆ῝ࡵࡿᶵࡢ ᥦ౪ࡀᮇᚅࡉࢀࡿ㸬 2 2㸬㸬ᢏ⾡ᴫせ ᮏ◊✲࡛⏝ࡍࡿᢏ⾡ࡘ࠸࡚ㄝ᫂ࡍࡿ㸬 2 2--11. ࣃࣃࢣࢵࢺ㏻ಙ ࣃࢣࢵࢺ㏻ಙࡣ㸪ࣥࢱ࣮ࢿࢵࢺୖࡢ㏻ಙ࡛ ⏝ࡉࢀࡿ㏻ಙ᪉ᘧ࡛࠶ࡿ㸬㏻ᖖ㸪ࣥࢱ࣮ࢿࢵ ࢺࢆࡋࡓࢹ࣮ࢱ㏻ಙࡣ 4 ࡘࡢ࣮ࣞࣖࢆࡍ㸬 ࢿࢵࢺ࣮࣡ࢡࣥࢱࣇ࢙࣮ࢫᒙ㸪ࣥࢱ࣮ࢿࢵࢺ ᒙ㸪ࢺࣛࣥࢫ࣏࣮ࢺᒙ㸪ࣉࣜࢣ࣮ࢩࣙࣥᒙ࡛࠶ ࡿ㸬ࡇࡢ4 ᒙࡣ TCP/IP4 ᒙࣔࢹࣝࡤࢀࡿ2㸧㸬 ࢿࢵࢺ࣮࣡ࢡࣥࢱࣇ࢙࣮ࢫᒙ࡛ࡣ㸪≀⌮ⓗ࡞ ࢹ࣮ࢱࡢ⾲⌧᪉ἲࢆỴᐃࡋ㸪ྠ୍ࢿࢵࢺ࣮࣡ࢡ ࠾ࡅࡿࢹ࣮ࢱ㏻ಙࢆᐇ⌧ࡍࡿ㸬ࣥࢱ࣮ࢿࢵࢺᒙ ࡛ࡣ㸪ࣥࢱ࣮ࢿࢵࢺࢆࡋࡓࢹ࣮ࢱ㏻ಙࢆᐇ⌧ ࡍࡿ㸬ࢺࣛࣥࢫ࣏࣮ࢺᒙ࡛ࡣ㸪㏻ಙࡢಙ㢗ᛶࢆಖ ドࡋ㸪ࣉࣜࢣ࣮ࢩࣙࣥᒙ࡛ࡣ㸪ࣉࣜࢣ࣮ࢩࣙ ࣥ㛫ࡢ㏻ಙࢆᐇ⌧ࡍࡿ㸬 ࣥࢱ࣮ࢿࢵࢺᒙ࠾ࡅࡿࢹ࣮ࢱᙧᘧࡣࣃࢣ ࢵࢺࡤࢀ㸪IP ࣊ࢵࢲࢹ࣮ࢱ㒊ࡼࡾᵓᡂࡉ ࢀࡿ㸬IP ࣊ࢵࢲࡣ㸪㏦ಙඖ࠾ࡼࡧ㏦ಙඛࡢ IP ࢻࣞࢫࡀ᱁⣡ࡉࢀ࡚࠸ࡿ㸬IP ࢻࣞࢫࡣ㸪 ࣥࢱ࣮ࢿࢵࢺୖ࠾ࡅࡿఫᡤ┦ᙜࡍࡿࡶࡢ࡛ ࠶ࡾ㸪32 ࣅࢵࢺࡢᩚᩘ್࡛⾲⌧ࡉࢀࡿ㸬୍⯡ⓗ ࡣ8 ࣅࢵࢺࡈࣆࣜ࢜ࢻ࡛༊ษࡾ㸪4 ࣈࣟࢵࢡ ศࡅ࡚10 㐍ᩘ࡛⾲グࡉࢀࡿ㸬 IP ࢻࣞࢫࡣࢿࢵࢺ࣮࣡ࢡ㒊࣍ࢫࢺ㒊ࡽ ᵓᡂࡉࢀࡿ㸬ࢿࢵࢺ࣮࣡ࢡ㒊ࡣヱᙜ࣍ࢫࢺࡀᒓࡍ ࡿࢿࢵࢺ࣮࣡ࢡࡢఫᡤࢆ♧ࡋ࡚࠸ࡿ㸬࣍ࢫࢺ㒊ࡣ ࢿࢵࢺ࣮࣡ࢡෆ࠾ࡅࡿ࣍ࢫࢺࡢ⨨ࢆ♧ࡋ࡚ ࠸ࡿ㸬ࢿࢵࢺ࣮࣡ࢡ㒊ࡢࣅࢵࢺ㛗ࡣ㸪IP ࢻࣞࢫ ࡢᚋᑿࢫࣛࢵࢩࣗࢆධࢀ࡚グࡉࢀࡿ㸬32 ࣅࢵ ࢺࡽࢿࢵࢺ࣮࣡ࢡ㒊ࡢࣅࢵࢺ㛗ࢆᘬ࠸ࡓ್ࡣ ࣍ࢫࢺ㒊ࡢࣅࢵࢺ㛗࡞ࡿ㸬࣍ࢫࢺ㒊ࡢࣅࢵࢺࢆ ࡚0 ࡋࡓࢻࣞࢫࡣ㸪ࢿࢵࢺ࣮࣡ࢡࢻࣞࢫ ࡤࢀࡿ㸬 IP ࢻࣞࢫࡣ㸪2 ࡘࡢࣂ࣮ࢪࣙࣥࡀᏑᅾࡍࡿ㸬 ඛ㏙ࡓࡶࡢࡣࣂ࣮ࢪࣙࣥ 4 ࡛࠶ࡾ㸪IPv4 ⾲グࡉࢀࡿ㸬ࡶ࠺1 ࡘࡢࣂ࣮ࢪࣙࣥࡣ IPv6 ࡛࠶ ࡾ㸪IPv4 ࡢᯤῬకࡗ࡚Ⓩሙࡋࡓࡶࡢ࡛࠶ࡿ㸬 IPv6 ࡢࢻࣞࢫࡣ 128 ࣅࢵࢺ࡛⾲グࡉࢀ㸪ᐇ⏝ ୖࡰ↓㝈㏆࠸ࢻࣞࢫ✵㛫ࢆࡶࡘ㸬 IP ࢻ ࣞ ࢫ ࡢ ࡾ ᙜ ࡚ ࡣ 㸪 ICANN 㸦 The Internet Corporation for Assigned Names and Numbers㸧ࡼࡾ⾜ࢃࢀࡿ㸬ICANN ࡣ 1998 ᖺ タ❧ࡢ㠀Ⴀἲே࡛࠶ࡾ㸪ࣥࢱ࣮ࢿࢵࢺ࠾ࡅ ࡿ୍ពⓗ࡞㆑ูᏊࡢ⟶⌮࣭┘╩ࢆᢸࡗ࡚࠸ࡿᶵ㛵 ࡛࠶ࡿ3㸧㸬IP ࢻࣞࢫࡢࡾᙜ࡚ࡣ㸪࣮ࣚࣟࢵࣃ ࡞ࡢྛᆅᇦⅬᅾࡍࡿࣞࢪࢫࢺࣜᑐࡋ࡚㸪ࢿ ࢵࢺ࣮࣡ࢡࢻࣞࢫ༢࡛⾜ࢃࢀࡿ㸬ࡑࡢᚋ㸪ྛ ᆅᇦࡢࣞࢪࢫࢺࣜࡣᅜ༢࡛ࢻࣞࢫࢆࡾᙜ ࡚ࡿ㸬ࡉࡽ㸪ᅜࡣࣥࢱ࣮ࢿࢵࢺࢧ࣮ࣅࢫࣉࣟ ࣂࢲࢻࣞࢫࢆࡾᙜ࡚ࡿ㸬ࡇࡢࡾᙜ࡚ᵓ 㐀క࠸㸪ࢿࢵࢺ࣮࣡ࢡࢻࣞࢫࡣᅜሗࢆྵࡴ㸬 ᮏ◊✲࡛ࡣ㸪࣮ࣘࢨࡀ㏦ཷಙࡍࡿࣃࢣࢵࢺࡢIP ࣊ࢵࢲࢆゎᯒࡍࡿ㸬IP ࣊ࢵࢲࡽ㸪㏻ಙ┦ᡭࡢ IP ࢻࣞࢫࢆྲྀࡾฟࡋ㸪ࡑࡢࢿࢵࢺ࣮࣡ࢡࢻࣞࢫ ࢆồࡵࡿ㸬ࢿࢵࢺ࣮࣡ࢡࢻࣞࢫࡀᢕᥱ࡛ࡁࢀࡤ㸪 ㏻ಙᅜࡢ≉ᐃࡀྍ⬟࡞ࡿ㸬 2 2--22㸬㸬ྍど ྍどࡣ㸪ே㛫ࡀ┤᥋ⓗぢࡿࡇࡀ࡛ࡁ࡞ ࠸㇟ࢆㄆ㆑ྍ⬟ࡍࡿࡇ㸪ࡶࡋࡃࡣ㸪࠶ࡿ ㇟ࢆᩚ⌮ࡋ㸪₯ᅾⓗ࡞ᐇࢆᢕᥱࡋࡸࡍ࠸ࡼ࠺ ࡍࡿࡇ࡛࠶ࡿ㸬࠸ࡎࢀࡢሙྜ࠾࠸࡚ࡶ㸪ே㛫 ࡢㄆ㆑ࢆಁ㐍ࡍࡿࡇࡀ┠ⓗ࡞ࡿ㸬
ࡇࡢ୍ࡋ࡚㸪 Jigsaw ♫ࡢ Digital Attack Map ࡀ࠶ࡿ4㸧㸬Digital Attack Map ࡛ࡣ㸪DDoS
ᨷᧁࡢᵝᏊࢆࣜࣝࢱ࣒࡛ୡ⏺ᆅᅗୖྍど ࡋ࡚࠸ࡿ㸬ࡑࡢ⾲♧ࢆᅗ1 ♧ࡍ㸬 ᅗ1 ࡼࡾ㸪ୡ⏺ᆅᅗୖᥥ⏬ࡉࢀࡓ 2 Ⅼ㛫ࡢ᭤ ⥺ࢆ☜ㄆ࡛ࡁࡿ㸬ࡇࡢ᭤⥺ࡣᨷᧁඖ࣭ᨷᧁඛࡢ2 Ⅼࢆ⤖ࢇ࡛࠸ࡿ㸬᭤⥺ࡢⰍࡣDDoS ᨷᧁࡢ✀㢮㸪 ᭤⥺ࡢኴࡉࡣᨷᧁࡢ㢖ᗘࢆ⾲ࡋ࡚࠸ࡿ㸬
Digital Attack Map ࡛ࡣ㸪๓㏙ࡋࡓྍどࡢ
᪨ࢆ࠸ࡎࢀࡶయ⌧ࡋ࡚࠸ࡿ㸬1 Ⅼ┠ࡘ࠸࡚ࡣ㸪 ே㛫ࡀ▱ぬ࡛ࡁ࡞࠸㇟࡛࠶ࡿ DDoS ᨷᧁࢆㄆ ㆑ྍ⬟࡞ᙧኚࡋ࡚࠸ࡿⅬ࡛࠶ࡿ㸬2 Ⅼ┠ࡣ㸪 ᨷᧁᆅⅬࡸᨷᧁ㔞ࡢどぬⓗ࡞⌮ゎࢆಁࡋ࡚࠸ࡿ Ⅼ࡛࠶ࡿ㸬ࡲࡓྍどࡣぢࡿேࡀ࠸ࡿࡇ࡛㸪ࡑ ࡢ౯್ࡀ᭱ࡉࢀࡿ㸬ࡇࡢࡇࢆ㋃ࡲ࠼ࡿ㸪 ㄡ࡛ࡶ㜀ぴࡍࡿ࡛ࡁࡿ Web ࢧ࣮ࣅࢫࡋ࡚ᥦ౪ ࡉࢀ࡚࠸ࡿⅬࡶ㔜せ࡛࠶ࡿ㸬 ᮏ◊✲࡛ࡣ㸪ࣃࢣࢵࢺ㏻ಙࡀྍどᑐ㇟࡞ࡿ㸬 ࢧࣂ࣮ᨷᧁẚ㍑ࡍࡿ㸪ࣃࢣࢵࢺ㏻ಙࡣࡁ ࡞ពྜ࠸ࢆᣢࡘ㇟࡛ࡣ࡞࠸㸬ࡋࡋ㸪ࢧࣂ ࣮ᨷᧁࡼࡾࡶ㌟㏆࡞㇟࡛࠶ࡾ㸪ࡲࡓࢧࣂ࣮ᨷ ᧁࡢᘬࡁ㔠࡞ࡾ࠼ࡿ㇟࡛࠶ࡿ㸬ࡇࡢࡇࢆ⪃ ៖ࡋࡘࡘ㸪㐺ࡋࡓྍど᪉ἲࢆᥦࡍࡿ㸬 2 2--33. Processing Processing ࡣ㸪2001 ᖺ㸪࣭࣋ࣥࣇࣛ㸪ࢣ ࢩ࣮࣭࣮ࣜࢫࡼࡾ㛤Ⓨࡉࢀࡓࣉࣟࢢ࣑ࣛࣥࢢ ゝㄒ࠾ࡼࡧ㛤Ⓨ⎔ቃ࡛࠶ࡿ 5㸧㸬Java ࣮࣋ࢫࡢゝ ㄒ࡛࠶ࡾ㸪ࣅࢪࣗࣝ࡞⾲⌧≉ࡋ࡚࠸ࡿ㸬1 ࡘࡢࣉࣟࢪ࢙ࢡࢺࡣࢫࢣࢵࢳࡋ࡚⟶⌮ࡉࢀ㸪ࢯ ࣮ࢫࣇࣝࡸ⏬ീ࡞ࡢྛ✀ࢹ࣮ࢱࡼࡾᵓ ᡂ ࡉ ࢀ ࡿ 㸬 ࢯ ࣮ ࢫ ࣇ ࣝ ࡢ ᣑ ᙇ Ꮚ ࡣ pde 㸦Processing Development Environment㸧࡞ ࡿ㸬 ࣉࣟࢢ࣒ࣛࡣࡁࡃศࡅ࡚ setup ࣓ࢯࢵࢻ draw ࣓ࢯࢵࢻࡽᡂࡿ㸬setup ࣓ࢯࢵࢻࡣࣉࣟ ࢢ࣒ࣛ㉳ື1 ᗘࡢࡳᐇ⾜ࡉࢀࡿ࣓ࢯࢵࢻ࡛࠶ ࡾ㸪⏬㠃ࢧࢬࡸࣇ࣮࣒࣮ࣞࣞࢺ࠸ࡗࡓࣃ࣓ࣛ ࣮ࢱࡢタᐃࡀ⾜ࢃࢀࡿ㸬draw ࣓ࢯࢵࢻࡣᥥ⏬⏝ ࡢ㛵ᩘ࡛࠶ࡾ㸪setup ࣓ࢯࢵࢻࡢ⤊ࡧฟ ࡉࢀࡿ㸬draw ࣓ࢯࢵࢻࡣ㸪ᣦᐃࡋࡓࣇ࣮࣒ࣞࣞ ࣮ࢺᚑ࠸㸪⧞ࡾ㏉ࡋᐇ⾜ࡉࢀࡿ㸬1 ᅇࡢᐇ⾜ࡀ 1 ࣇ࣮࣒ࣞࡢᥥ⏬┦ᙜࡍࡿ㸬 ᐇ⾜ࡋࡓࣉࣟࢢ࣒ࣛࡣJava ࢥ࣮ࢻኚࡉࢀ㸪 Java ࣉࣟࢢ࣒ࣛࡋ࡚ᐇ⾜ࡉࢀࡿ 6㸧㸬ࣉࣜࢣ ࣮ࢩࣙࣥࡋ࡚࢚ࢡࢫ࣏࣮ࢺࡍࡿሙྜࡶྠᵝ࡛ ࠶ࡿ㸬ྛ✀ࣉࣛࢵࢺࣇ࢛࣮࣒ྥࡅࡓJava ࣉ ࣜࢣ࣮ࢩࣙࣥࡋ࡚ࢥࣥࣃࣝࡉࢀࡿ㸬 ᮏ◊✲࡛ࡣ㸪ࣃࢣࢵࢺ㏻ಙࡢゎᯒ⤖ᯝࢆྍど ࡍࡿࡓࡵProcessing ࢆ⏝ࡍࡿ㸬1 ࣇ࣮࣒ࣞ༢ ࡢゎᯒ⤖ᯝࢆdraw ࣓ࢯࢵࢻᘬࡁΏࡋ㸪ࡑࡢ ෆᐜࢆࡶྍどࢆ⾜࠺㸬 2-4㸬Pcap4J Pcap4J ࡣ㸪ࣃࢣࢵࢺ࢟ࣕࣉࢳࣕࡸࣃࢣࢵࢺ ࡢ㏦ཷಙࢆྍ⬟ࡍࡿJava ࣛࣈ࡛ࣛࣜ࠶ࡿ㸬 ࣃࢣࢵࢺࡣ࢜ࣈࢪ࢙ࢡࢺࡋ࡚ྲྀᚓࡉࢀ㸪ྛ✀ࢹ ࣮ࢱࢡࢭࢫ࡛ࡁࡿ㸬Ethernet㸪IPv4 ࡸ IPv6㸪 TCP ࡸ UDP ࠸ࡗࡓከᵝ࡞ࣉࣟࢺࢥࣝࡀࢧ࣏࣮ ࢺࡉࢀ࡚࠸ࡿ㸬 ࢩࢫࢸ࣒せ௳ࡋ࡚㸪UNIX ⣔࡛࠶ࢀࡤ libpcap㸪 Windows ࡛࠶ࢀࡤ WinPcap ࡀᚲせ࡞ࡿ㸬ࡇࢀ ࡽࡢࢯࣇࢺ࢙࢘ࡣ㸪࣮࢜࣌ࣞࢸࣥࢢࢩࢫࢸ࣒ ෆࡢࣃࢣࢵࢺሗࢡࢭࢫᶵ⬟ࢆᥦ౪ࡍࡿ㸬 Pcap4J ࡣ⟶⌮⪅ᶒ㝈࡛ᐇ⾜ࡍࡿᚲせࡀ࠶ࡿ㸬 Pcap4J ࢆ⏝ࡋࡓࣃࢣࢵࢺࡢ࢟ࣕࣉࢳࣕ⤖ᯝ ࡢ୍㒊ࢆᅗ2 ♧ࡍ㸬ࡲࡓ㸪ᅗ 2 ࡢ࢟ࣕࣉࢳࣕᐇ ⾜⎔ቃ࠾ࡅࡿIP ࢻࣞࢫሗࢆᅗ 3 ♧ࡍ㸬 ᅗ2 ࡼࡾ㸪IPv4 ࣊ࢵࢲࡢෆᐜࢆ☜ㄆ࡛ࡁࡿ㸬 ㏦ಙඖࢻࣞࢫࡣ150.100.16.111 ࡛࠶ࡾ㸪㏦ಙඛ ࢻࣞࢫࡣ192.168.11.2 ࡛࠶ࡿ㸬 ᅗ3 ࡼࡾ㸪࢟ࣕࣉࢳࣕᐇ⾜⎔ቃ࠾ࡅࡿ IPv4 ࢻ ࣞ ࢫ ࢆ ☜ ㄆ ࡛ ࡁ ࡿ 㸬 ヱ ᙜ ࡢ ࢻ ࣞ ࢫ ࡣ 192.168.11.2 ࡛࠶ࡿ㸬ᅗ 2 ࡛㏙ࡓ㏻ࡾ㸪ࡇࡢ ࢻࣞࢫࡣ㏦ಙඛࡋ࡚ᣦᐃࡉࢀ࡚࠸ࡿ㸬ᅗ2㸪3 ࡼ ࡾ㸪ࡇࡢࣃࢣࢵࢺࡣ㸪150.100.16.111 ࡢ࣍ࢫࢺ ᅗ1 Digital Attack Map
ࡽ㏦ಙࡉࢀ࡚ࡁࡓࡶࡢࡔุ᩿࡛ࡁࡿ㸬 ᮏ◊✲࡛ࡣ㸪ୖグࡢࡼ࠺࡞࣮ࣘࢨࡀࡸࡾྲྀࡾࡋ ࡓࣃࢣࢵࢺࡢIP ࣊ࢵࢲࢆྲྀᚓࡍࡿ㸬IP ࣊ࢵࢲ ࡽ IP ࢻࣞࢫࢆྲྀᚓࡋ㸪㏻ಙ┦ᡭࡢࢻࣞࢫࢆ ᢕᥱࡍࡿ㸬⥆࠸࡚㸪ヱᙜࢻࣞࢫࢆゎᯒࡋ㸪㏻ಙ ᅜࢆ≉ᐃࡍࡿ㸬ୖグࡢ࡛ࡣ150.100.16.111 ࢆゎ ᯒࡍࡿࡇ࡞ࡿ㸬ࡇࡢࢻࣞࢫࡣ᪥ᮏࡀಖ᭷ࡍ ࡿࢻࣞࢫ࡛࠶ࡿ㸬 3 3㸬㸬ᮏ◊✲ࡘ࠸࡚ ᮏ◊✲ࡢ┠ⓗࡣ㸪ࣃࢣࢵࢺ㏻ಙࢆㄆ㆑ࡍࡿᶵ ࡢᥦ౪࡛࠶ࡿ㸬ࣃࢣࢵࢺ㏻ಙࢆࣜࣝࢱ࣒ ࡘ⮬ືⓗྍどࡍࡿࣉࣜࢣ࣮ࢩࣙࣥࢆ㛤Ⓨ ࡍࡿ㸬ᑐ㇟ࡢ࣮ࣘࢨࡣ㸪ࣃࢣࢵࢺ㏻ಙ㛵ࡍࡿᑓ 㛛▱㆑ࢆᣢࡓ࡞࠸୍⯡࣮ࣘࢨࡍࡿ㸬ྍど࡛ࡣ㸪 ࣃࢣࢵࢺࡢ㏻ಙ㔞࠾ࡼࡧ㏻ಙᅜ↔Ⅼࢆᙜ࡚ࡿ㸬 ࣉࣟࢺࢥࣝ࡞ࡢᑓ㛛ⓗ࡞ሗࡢᥦ♧ࢆ㑊ࡅࡿ ࡇ࡛㸪୍⯡࣮ࣘࢨࡢ⌮ゎࢆಁࡍࡇࡀᮇᚅࡉࢀ ࡿ㸬 ᮏ◊✲ࡣ3 ࡘࡢᡭ㡰ࡽᵓᡂࡉࢀࡿ㸬ࣃࢣࢵࢺ ࡢゎᯒᚲせ࡞ࡿཧ↷ࢹ࣮ࢱࡢసᡂ㸪ࣃࢣࢵࢺ ࡢྲྀᚓ࠾ࡼࡧゎᯒ㸪ゎᯒ⤖ᯝࡢྍど࡛࠶ࡿ㸬 ࠸ࡎࢀࡢᡭ㡰ࡶJava ࡛㛤Ⓨࡍࡿ㸬௨㝆㸪㡰ࢆ ㏣ࡗ࡚ヲ⣽ࢆㄝ᫂ࡍࡿ㸬 3 3--11㸬㸬ཧ↷ࢹ࣮ࢱࡢసᡂ ᮏᡭ㡰࡛ࡣ㸪ࢿࢵࢺ࣮࣡ࢡࢻࣞࢫᅜࢆ㛵㐃 ࡅࡿཧ↷ࢹ࣮ࢱࢆసᡂࡍࡿ㸬ཧ↷ࢹ࣮ࢱࡢసᡂ ᙜࡓࡾ㸪MaxMind ♫ࡀᥦ౪ࡋ࡚࠸ࡿ࣮࢜ࣉࣥ ࢹ࣮ࢱࢆ⏝ࡍࡿ7㸧㸬ࡇࡢࢹ࣮ࢱࡣ㸪ࢿࢵࢺ࣡ ࣮ࢡࢻࣞࢫᅜࡢᑐᛂ㛵ಀ࡞㛵ࡍࡿࢹ࣮ ࢱࡀグ㍕ࡉࢀ࡚࠸ࡿ㸬ࢹ࣮ࢱࢆ⾲1 ♧ࡍ㸬 ⾲1 ࡼࡾ㸪ࢿࢵࢺ࣮࣡ࢡࢻࣞࢫᅜࡢᑐᛂ㛵 ಀࢆ☜ㄆ࡛ࡁࡿ㸬network ࡣ IPv4 ࡢࢿࢵࢺ࣮࣡ ࢡࢻࣞࢫ࡛࠶ࡾ㸪 country_name ࡣᅜྡ࡛࠶ࡿ㸬 ࡇࡢࢹ࣮ࢱࢆ௨㝆ࡢ IP ࢻࣞࢫࡢゎᯒ㐺ࡋࡓ ᙧᘧຍᕤࡍࡿ㸬ຍᕤෆᐜࡣ2 Ⅼ࠶ࡿ㸬1 Ⅼ┠ࡣ ࢿࢵࢺ࣮࣡ࢡࢻࣞࢫࡢᮍ⏝㡿ᇦࢆᤄධࡍࡿ ࡇ࡛࠶ࡿ㸬2 Ⅼ┠ࡣ㸪ྠ୍ࡢᅜ࠾࠸࡚㐃⥆ࡋ ࡓࢿࢵࢺ࣮࣡ࢡࢻࣞࢫࢆྲྀࡿሙྜ㸪ࡑࢀࡽࢆ1 ࡘࡲࡵࡿࡇ࡛࠶ࡿ㸬 1 Ⅼ┠ࡣ㸪IP ࢻࣞࢫࡢゎᯒࢆ⾜࠺ୖ࡛ᚲ㡲 ࡞ࡿ㸬ゎᯒ࡛ࡣ㸪ཧ↷ࢹ࣮ࢱෆ࠶ࡿࢻࣞࢫ✵ 㛫ࢆศࡋ࡚࠸ࡁ㸪ゎᯒᑐ㇟ࡢIP ࢻࣞࢫࢆ ྵࡴࢿࢵࢺ࣮࣡ࢡࢻࣞࢫࢆ≉ᐃࡍࡿ㸬ࡇࡢࡁ㸪 ࢻࣞࢫ✵㛫✵ࡁࡀ࠶ࡿ㸪IP ࢻࣞࢫࢆṇࡋ ࡃ᥈⣴ࡍࡿࡇࡀ࡛ࡁ࡞࠸㸬ᮍ⏝㡿ᇦࢆᇙࡵࡿ ࡇ࡛㸪ࢻࣞࢫ✵㛫ࢆ࡚⥙⨶ࡍࡿ㸬2 Ⅼ┠ࡣ㸪 ཧ↷ࢹ࣮ࢱࡢࢹ࣮ࢱࢧࢬࢆ๐ῶࡍࡿࡓࡵ࡛࠶ ࡿ㸬MaxMind ♫ࡢࢹ࣮ࢱࡣ 280 ௳㏆ࡃ࠶ࡿ㸬 ࡇࢀࡣ㸪ᕞࡸ㒔ᕷ࠸ࡗࡓᅜࡼࡾࡶᑠࡉ࠸ࣞ࣋ࣝ ࡛ࢹ࣮ࢱࡀ⣽ศࡉࢀ࡚࠸ࡿࡇ㸪ࡲࡓ㸪ࢿࢵࢺ ࣮࣡ࢡࢻࣞࢫ༢࡛ࢹ࣮ࢱࡀグ㍕ࡉࢀ࡚࠸ࡿ ࡇ౫ᣐࡍࡿ㸬ࡇࢀࡽࢆࡲࡵ࡚࠸ࡁ㸪ࢹ࣮ࢱ ௳ᩘࡢ๐ῶࢆᅗࡿ㸬 ୖグࡢຍᕤࢆᐇ⌧ࡍࡿࡓࡵࡣ㸪ࢿࢵࢺ࣮࣡ࢡ ࢻࣞࢫࡢ⠊ᅖࢆồࡵࡿᚲせࡀ࠶ࡿ㸬⾲1 ᑐᛂ ᅗ3 IP ࢻࣞࢫሗ ᅗ2 ࣃࢣࢵࢺ࢟ࣕࣉࢳࣕ⤖ᯝ ⾲1 ࢿࢵࢺ࣮࣡ࢡࢻࣞࢫᅜ QHWZRUN FRXQWU\BQDPH ηη࿊ ΠϟϨΩ़ࠅ ΠϟϨΩ़ࠅ ΠϟϨΩ़ࠅ Πϩϧϱχ 3-2㸬ࣃࢣࢵࢺࡢ࢟ࣕࣉࢳ࣭ࣕゎᯒ
ࡍࡿࢿࢵࢺ࣮࣡ࢡࢻࣞࢫࡢ⠊ᅖࢆ⾲ 2 ♧ࡍ㸬 ⾲2 ࡼࡾ㸪ࢫࢫ㐃㑥࣓ࣜ࢝ྜ⾗ᅜࡢ㛫 ࢻࣞࢫ✵㛫ࡢ✵ࡁࡀ࠶ࡾ㸪ࡲࡓ࣓ࣜ࢝ྜ⾗ᅜ ࡣ㐃⥆ࡋࡓࢻࣞࢫ✵㛫࡞ࡗ࡚࠸ࡿࡇࢆ☜ ㄆ࡛ࡁࡿ㸬ࡇࢀࡽࡢⅬᑐࡋ㸪๓㏙ࡋࡓຍᕤࢆ㐺 ⏝ࡍࡿ㸬ຍᕤ⤖ᯝࢆ⾲3 ♧ࡍ㸬 ⾲3 ࡼࡾ㸪ࢫࢫ㐃㑥࣓ࣜ࢝ྜ⾗ᅜࡢ㛫 ᮍ⏝㡿ᇦࡀᤄධࡉࢀ࡚࠸ࡿࡇࢆ☜ㄆ࡛ࡁࡿ㸬 ࡇࢀࡼࡾ㸪ࢫࢫ㐃㑥ࡀᣢࡘࢻࣞࢫሗࢆ☜ ಖࡋࡘࡘ㸪ᮍ⏝㡿ᇦࢆ᫂♧࡛ࡁࡿ㸬ࡲࡓ㸪࣓ ࣜ࢝ྜ⾗ᅜࡢࢻࣞࢫ✵㛫ࢆ⤫ྜࡋ㸪ࢹ࣮ࢱ௳ᩘ ࢆ2 ௳๐㝖ࡋ࡚࠸ࡿ㸬 ࡇࡢฎ⌮ࢆ 280 ௳࡚ࡢࢹ࣮ࢱᑐࡋ㐺⏝ ࡍࡿ㸬ࡑࡢ⤖ᯝ㸪ࢹ࣮ࢱ௳ᩘࡣ 18 ௳⛬ᗘࡲ ࡛㍍ῶࡉࢀࡿ㸬᳨⣴ຠ⋡㸪ࢹ࣮ࢱࢧࢬࡶ㸪 ࡁࡃᨵၿ࡛ࡁࡿ㸬 ࢟ࣕࣉࢳࣕ࠾࠸࡚㸪137.40.1.1 ࠸࠺ࢻࣞ ࢫࡀྲྀᚓࡉࢀࡓࡍࡿ㸬ࡇࡢࡁ㸪⾲3 ࢆཧ↷ࡍ ࡿࡇ࡛㸪ヱᙜࡍࡿᅜࡢุ᩿ࡀྍ⬟࡛࠶ࡿ㸬ヱᙜ ࡢࢻࣞࢫࡀ㸪137.36.0.0 ௨ୖ㸦࣓ࣜ࢝ྜ⾗ᅜ㸧 ࡛࠶ࡾ㸪ࡘ137.43.0.0 ᮍ‶㸦ࣝࣛࣥࢻ㸧࡛ ࠶ࡿࡇࡽ㸪࣓ࣜ࢝ྜ⾗ᅜࡢࡶࡢ࡛࠶ࡿุ ᩿࡛ࡁࡿ㸬 సᡂࡋࡓཧ↷ࢹ࣮ࢱࡣࣉࣜࢣ࣮ࢩࣙࣥ㉳ື ㄞࡳ㎸ࡲࢀࡿ㸬 3 3--22㸬㸬ࣃࢣࢵࢺࡢ࢟ࣕࣉࢳ࣭ࣕゎᯒ ᮏᡭ㡰࡛ࡣ㸪࣮ࣘࢨࡀ㏦ཷಙࡍࡿࣃࢣࢵࢺࢆྲྀ ᚓࡋ㸪ゎᯒࡍࡿ㸬ࣃࢣࢵࢺࡢྲྀᚓࡣ㸪๓㏙ࡋࡓ Pcap4J ࢆ⏝ࡍࡿ㸬ࣃࢣࢵࢺࢆ࢜ࣈࢪ࢙ࢡࢺ ࡋ࡚᧯సࡍࡿࡇࡀ࡛ࡁࡿ㸬 ࣃࢣࢵࢺࡢྲྀᚓ㝿ࡋ㸪࢟ࣕࣉࢳࣕᑐ㇟࡞ࡿ ࢿࢵࢺ࣮࣡ࢡࣥࢱࣇ࢙࣮ࢫࢆᣦᐃࡍࡿᚲせࡀ ࠶ࡿ㸬ᮏ◊✲࡛ࡣ㸪࣮ࣘࢨࡀ⌧ᅾ⏝ࡋ࡚࠸ࡿ ࣥࢱࣇ࢙࣮ࢫ࡞ࡿ㸬ࣥࢱࣇ࢙࣮ࢫࡢᣦᐃࡣ㸪 IP ࢻࣞࢫ࡞ࡢᑓ㛛ⓗ࡞▱㆑ࡀᚲせ࡞ࡿ㸬ࡑ ࡢࡓࡵ㸪ࣥࢱࣇ࢙࣮ࢫࡢᣦᐃࡢ⮬ືࢆᅗࡾ㸪 ࣮ࣘࢨࡢ㈇ᢸࢆ㍍ῶࡍࡿ㸬࣮ࣘࢨࡀ⏝ࡋ࡚࠸ࡿ ࣥࢱࣇ࢙࣮ࢫࢆ⮬ືⓗ≉ᐃࡋ㸪ࡑࢀࡀ࢟ࣕࣉ ࢳࣕᑐ㇟ࡋ࡚ᣦᐃࡉࢀࡿࡼ࠺ࡍࡿ㸬 ࣥࢱࣇ࢙࣮ࢫࡢ≉ᐃࡣ㸪2 ࡘࡢࣉࣟࢭࢫࡼ ࡾᐇ⌧ࡍࡿ㸬ࡲࡎ㸪PC ୖᏑᅾࡍࡿ࡚ࡢࢿࢵ ࢺ࣮࣡ࢡࣥࢱࣇ࢙࣮ࢫࡢሗࢆྲྀᚓࡍࡿ㸬PC ࡣ᭷⥺ࡸ↓⥺࡞㸪」ᩘࡢࣥࢱࣇ࢙࣮ࢫࡀᏑ ᅾࡍࡿࡇࡀࢇ࡛࠶ࡿ㸬ࡇࢀࡽࡢࣥࢱࣇ ࢙࣮ࢫࡀᣢࡘIP ࢻࣞࢫ࡞ࡢሗࢆྲྀᚓࡍࡿ㸬 ḟ㸪Inet4Address ࢡࣛࢫ ࡢ getLocalHost ࣓ࢯࢵࢻࢆ⏝ࡋ㸪PC ࡀ⏝ࡋ࡚࠸ࡿ IPv4 ࢻࣞࢫࢆྲྀᚓࡍࡿ㸬ྲྀᚓࡋࡓIPv4 ࢻࣞࢫ㸪 ๓㏙ࡋࡓࣥࢱࣇ࢙࣮ࢫࡢሗࢆ↷ࡽࡋྜࢃ ࡏ㸪୍⮴ࡍࡿIPv4 ࢻࣞࢫࢆᣢࡘࣥࢱࣇ࢙࣮ ࢫࢆぢࡘࡅฟࡍ㸬୍⮴ࡋࡓࡶࡢࡀᏑᅾࡋࡓሙྜ㸪 ࡑࡢࣥࢱࣇ࢙࣮ࢫࢆ࢟ࣕࣉࢳࣕᑐ㇟ࡍࡿ㸬 ୍᪉࡛㸪IPv6 ࢆ⏝ࡋ࡚࠸ࡿሙྜ㸪ୖグࡢ ᪉ἲ࡛ࡣࣥࢱࣇ࢙࣮ࢫࡢ≉ᐃࡀ࡛ࡁ࡞࠸㸬PC ࡢࣥࢱࣇ࢙࣮ࢫ୍ぴሗࢆྲྀᚓࡋࡓ㝿㸪ᚓࡽࢀ ࡿࢻࣞࢫࡣ㸪ࡑࡢࣥࢱࣇ࢙࣮ࢫࡀ⏝ࡋ ࡚࠸ࡿࢻࣞࢫ࡞ࡿ㸬IPv6 ࢆ⏝ࡋ࡚࠸ ࡿሙྜ㸪IPv6 ࢻࣞࢫࡀྲྀᚓࡉࢀࡿ㸬ࡋࡋ㸪 getLocalHost ࣓ࢯࢵࢻ࡛ࡣ㸪ྲྀᚓࡉࢀࡿࢻࣞ ࢫࡀIPv4 㝈ᐃࡉࢀࡿ㸬ࡑࡢࡓࡵ㸪୍⮴ࡍࡿ ࣥࢱࣇ࢙࣮ࢫࢆ᥈ࡋฟࡍࡇࡀ࡛ࡁ࡞࠸㸬ࡇࡢሙ ྜ㸪ྲྀᚓࡋࡓࣥࢱࣇ࢙࣮ࢫᑐࡋ㸪୪⾜ࡋࡓ ࣃࢣࢵࢺ࢟ࣕࣉࢳࣕࢆ㛤ጞࡍࡿ㸬ࡑࡢ୰࡛㸪᭱ࡶ ㏻ಙ㢖ᗘࡢ㧗࠸ࣥࢱࣇ࢙࣮ࢫࢆ࢟ࣕࣉࢳࣕᑐ ⾲2 ࢿࢵࢺ࣮࣡ࢡࢻࣞࢫࡢ⠊ᅖ ⾲3 ຍᕤ⤖ᯝ QHWZRUN FRXQWU\BQDPH ηη࿊ ʛ ΠϟϨΩ़ࠅ ʛ ΠϟϨΩ़ࠅ ʛ ΠϟϨΩ़ࠅ ʛ Πϩϧϱχ ʛ ϋρφϭʖέΠχϪηҕ QHWZRUN FRXQWU\BQDPH ηη࿊ ʤາ࢘༽ʥ ΠϟϨΩ़ࠅ Πϩϧϱχ
㇟ࡍࡿ㸬࢟ࣕࣉࢳࣕᑐ㇟ࡀỴᐃᚋ㸪ヱᙜࡢࣥ ࢱࣇ࢙࣮ࢫᑐࡋ࡚㸪࢟ࣕࣉࢳࣕࢆ㛤ጞࡍࡿ㸬ࡲ ࡓ㸪࢟ࣕࣉࢳࣕ㛤ጞᚋࡶ㸪ᐃᮇⓗࣥࢱࣇ࢙࣮ ࢫࢆ┘どࡍࡿࡇ࡛㸪࢟ࣕࣉࢳࣕᑐ㇟ࡢኚ᭦ࢆ᳨ ฟࡋ㸪࢟ࣕࣉࢳࣕᑐ㇟ࡢษࡾ᭰࠼ࢆ⾜࠺㸬 ࣃࢣࢵࢺࡀྲྀᚓࡉࢀࡓሙྜ㸪IP ࣊ࢵࢲࡽ IP ࢻࣞࢫࢆྲྀࡾฟࡍ㸬ྲྀࡾฟࡋࡓ㏦ಙඖ㏦ಙඛ ࡢࢻࣞࢫࡢෆ㸪⮬ศ⮬㌟࡛࡞࠸㸪ࡘࢢ࣮ࣟࣂ ࡛ࣝ࠶ࡿࢻࣞࢫࢆゎᯒᑐ㇟ࡍࡿ㸬ࡇࡇ࡛㸪㏦ ಙඖࢻࣞࢫࡀゎᯒᑐ㇟࡞ࡗࡓሙྜ㸪ヱᙜࣃࢣ ࢵࢺࡣ࣮ࣘࢨࡀཷಙࡋࡓࡶࡢ࡞ࡿ㸬㏫㸪㏦ಙ ඛࢻࣞࢫࡀゎᯒᑐ㇟࡞ࡗࡓሙྜ㸪࣮ࣘࢨࡽ ㏦ಙࡉࢀࡓࣃࢣࢵࢺุ᩿ࡉࢀࡿ㸬࡞࠾㸪ࣈ࣮ࣟ ࢻ࢟ࣕࢫࢺ࡞ࡢ࣮ࣟ࢝ࣝ࡞㏻ಙࡢሙྜ㸪ヱᙜࡢ ࣃࢣࢵࢺࡣゎᯒᑐ㇟ࡋ࡞࠸㸬 IP ࢻࣞࢫࡢゎᯒࡣ㸪3-1 ⠇࡛సᡂࡋࡓཧ↷ࢹ ࣮ࢱࢆศ᥈⣴ࡋ㸪ᑐᛂࡍࡿᅜࢆ≉ᐃࡍࡿ㸬≉ᐃ ᚋ㸪ヱᙜࡢᅜࣃࢣࢵࢺࡢ㏦ཷಙࡀ⾜ࢃࢀࡓࡇ ࢆ㏻ಙࣟࢢグ㘓ࡍࡿ㸬グ㘓ࡉࢀࡿࢹ࣮ࢱࡣ㸪㏦ ಙࣃࢣࢵࢺᩘ㸪ཷಙࣃࢣࢵࢺᩘ㸪ࡸࡾྲྀࡾࡋࡓIP ࢻࣞࢫ࡞࡛࠶ࡿ㸬㏻ಙࣟࢢࡣ㸪ྍど࠾࠸ ࡚ཧ↷ࡍࡿࢹ࣮ࢱ࡞ࡿ㸬 ゎᯒ⤖ᯝࡣ᳨⣴ࣟࢢࡶಖᏑࡉࢀࡿ㸬ࣃࢣࢵࢺ ㏻ಙࡣ㸪ྠ୍ࡢ IP ࢻࣞࢫ」ᩘᅇ㏻ಙࡍࡿࡇ ࡀࢇ࡛࠶ࡿ㸬୍ᗘゎᯒࢆ⤊࠼ࡓ IP ࢻ ࣞࢫࡘ࠸࡚ࡣ㸪ḟᅇ௨㝆㸪᳨⣴ࣟࢢࡽゎᯒࡀ ࡿࡼ࠺࡞ᙧࡍࡿ㸬 IP ࢻࣞࢫࡢゎᯒࡣ㸪ཧ↷ࢹ࣮ࢱࡢศ᥈⣴ ࡼࡾᐇ⌧ࡋ࡚࠸ࡿ㸬IPv4 ࡛࠶ࢀࡤ㸪⣙ 18 ௳ࡢ ཧ↷ࢹ࣮ࢱࡢ୰ࡽ㸪┠ⓗࡢ㡯┠ࢆ᥈⣴ࡍࡿ㸬 ศ᥈⣴࠾ࡅࡿィ⟬㔞ࡣḟᘧ࡛⾲ࡉࢀࡿ㸬 ଶ݊ ࡇࡇ࡛㸪 ݊ ࡣࢹ࣮ࢱ㔞࡛࠶ࡿ㸬ᮏ◊✲࡛ࡣ ݊ ൌ ͳǤͺ ൈ ͳͲହ ࡞ࡿ㸬ࡋࡓࡀࡗ࡚ィ⟬㔞ࡣḟࡢ㏻ࡾ ࡞ࡿ㸬 ଶሺͳǤͺ ൈ ͳͲହሻ ൎ ͳǤͷ 17.5 ௨ୖ࡛᭱ࡶᑠࡉ࠸ᩚᩘࡀᚲせ࡞ࡿィ⟬㔞 ࡞ࡿࡓࡵ㸪ィ⟬㔞ࡣͳͺ ࡞ࡿ㸬 ୍᪉࡛㸪᳨⣴ࣟࢢࡽࡢ≉ᐃࡣィ⟬㔞ࡀᐇ㉁ⓗ 1 ࡞ࡿ㸬ࡑࡢ⌮⏤ࡣ㸪ヱᙜࡢ IP ࢻࣞࢫࢆ ࡶࡋࡓࣛࣥࢲ࣒ࢡࢭࢫࢆᐇ⌧ࡋ࡚࠸ࡿࡓ ࡵ࡛࠶ࡿ㸬᳨⣴ࣟࢢࡣ㸪HashMap ࢡࣛࢫࢆ ⏝ࡋ࡚࠸ࡿ㸬HashMap ࢡࣛࢫ࡛ࡣ㸪್࣮࢟ࢆ 㛵㐃ࡅ࡚⟶⌮ࡍࡿ㸬࣮࢟ࢆᣦᐃࡍࡿࡇ࡛㸪ᑐ ᛂࡍࡿ್ࢆ୍ពⓗྲྀᚓࡍࡿࡇࡀྍ⬟࡛࠶ࡿ㸬 ᳨⣴ࣟࢢ࡛ࡣ㸪IP ࢻࣞࢫࡢࣁࢵࢩ್ࣗࢆ࣮࢟ ࡋ࡚㸪ヱᙜࡢᅜሗࢆ್ࡍࡿ㸬IP ࢻࣞࢫࡢ ࣁࢵࢩࣗࡣ㸪hashCode ࡢ࣓ࢯࢵࢻࢆ⏝ࡍ ࡿ㸬ࡇࡢ⤌ࡳࡼࡾ㸪࠶ࡿ IP ࢻࣞࢫࡀ࢟ࣕ ࣉࢳࣕࡉࢀࡓሙྜ㸪ࡑࡢࣁࢵࢩ್ࣗᑐᛂࡍࡿᅜ ࡢ᭷↓ࢆ☜ㄆࡍࡿࡇ᳨࡛⣴῭ࡳ࠺ࢆุ ᩿࡛ࡁࡿ㸬᳨⣴῭ࡳࡢሙྜ㸪ᑐᛂࡍࡿᅜࢆ୍ពⓗ ≉ᐃ࡛ࡁࡿ㸬᳨⣴῭ࡳ࡛࡞࠸ሙྜ㸪ᑐᛂࡍࡿᅜ ࡀᏑᅾࡋ࡞࠸ࡓࡵ㸪ཧ↷ࢹ࣮ࢱ᳨⣴ࢆࡅ㸪ࡑ ࡢ⤖ᯝࢆ᳨⣴ࣟࢢಖᏑࡍࡿ㸬ࡇࡢᡭ㡰ࢆ⧞ࡾ㏉ ࡋ㸪࣮ࣘࢨࡀࡸࡾྲྀࡾࡋ࡚࠸ࡿ IP ࢻࣞࢫ࠾ࡼ ࡧ㸪ࡑࡢᅜࢆ⥙⨶ࡋ࡚࠸ࡃ㸬 ศ᥈⣴ࣁࢵࢩࣗࡼࡿ᥈⣴㸪᪉ࡢ᥈⣴ 㛫ࢆィ ࡋࡓ⤖ᯝࢆ♧ࡍ㸬100 ᅇࡢ᳨⣴ࢆ 1 ࢭ ࢵࢺࡋ㸪100 ࢭࢵࢺࡢᖹᆒᐇ⾜㛫ࢆィ ࡋࡓ㸬 ࡑࡢ⤖ᯝ㸪ศ᥈⣴ࡣ ʹǤͺ ሾሿ㸪ࣁࢵࢩࣗࡼ ࡿ᥈⣴ࡣ ʹͲǤͺ ሾሿ࡛࠶ࡗࡓ㸬ࣁࢵࢩࣗࡼࡿ᥈ ⣴ࡣ㸪ศ᥈⣴ࡢ ʹͺǤ Ψ ࡢ㛫࡛࠶ࡾ㸪ຠ⋡ࡀ ࡼ࠸ࡇࢆ☜ㄆ࡛ࡁࡿ㸬 ࡲࡓ㸪㏻ಙࣟࢢࡘ࠸࡚ࡶ㸪HashMap ࢡࣛࢫ ࢆ⏝ࡋ࡚࠸ࡿ㸬ᅜሗࢆ࣮࢟ࡋ࡚㸪ྛᅜࡢ㏻ ಙሗࢆ⟶⌮ࡋ࡚࠸ࡿ㸬 ୖグࡢฎ⌮ࢆ࢟ࣕࣉࢳࣕࡉࢀࡓࣃࢣࢵࢺᑐ ࡋ㸪㐺⏝ࡋ⥆ࡅࡿ㸬 3 3--33㸬㸬ྍど ᮏᡭ㡰࡛ࡣ㸪3-2 ⠇ࡢゎᯒ⤖ᯝࢆ㏻ಙᅜ㏻ಙ 㔞 ὀ ┠ ࡋ ྍ ど ࡍ ࡿ 㸬 ྍ ど ᙜ ࡓ ࡾ 㸪 Processing ࢆ⏝ࡍࡿ㸬ྍど࡛ࡣ㸪ࣇ࣮࣒ࣞࣞ ࣮ࢺᚑ࠸㸪1 ࣇ࣮࣒ࣞ༢࡛㏻ಙࣟࢢࢡࢭ ࢫࡍࡿ㸬ᮏ◊✲࡛ࡣ㸪ẖ⛊8 ࣇ࣮࣒ࣞࡋ࡚࠸ࡿ ሺͳሻ ሺʹሻ 4㸬⤖ᯝ᳨࣭ウ
ࡓࡵ㸪ͳʹͷ ሾሿ ẖ㏻ಙࣟࢢࢆཧ↷ࡍࡿ㸬ཧ↷ࡢ ᗘ㸪㏻ಙࣟࢢࢆึᮇࡋ㸪㏻ಙࣟࢢࡀ1 ࣇ࣮࣒ࣞ ༢ࡢࢹ࣮ࢱ࡞ࡿࡼ࠺ࡍࡿ㸬 ㏻ಙᅜࡣ㸪ྛᅜᑐᛂࡋࡓⰍࢆࡾࡿࡇ࡛ ⾲⌧ࡍࡿ㸬Ⰽࡢࡾࡾࡣ㸪ᅜྡࢆࡶࡋࡓ ᩘࡼࡾỴᐃࡍࡿ㸬 ㏻ಙ㔞ࡣ2 ࡘࡢ᪉ྥᛶࡽྍどࡍࡿ㸬1 ࡘࡣ ᅜูࡢ㏻ಙ㔞ὀ┠ࡋࡓࡶࡢ࡛࠶ࡾ㸪ࡶ࠺1 ࡘࡣ ㏻ಙ㔞ࡢ᥎⛣ὀ┠ࡋࡓࡶࡢ࡛࠶ࡿ㸬 1 ࡘ┠ࡣࢢࣛࣇࡼࡾ⾲⌧ࡍࡿ㸬࢟ࣕࣉࢳࣕ ࡉࢀࡓࣃࢣࢵࢺࡢ⥲㏻ಙ㔞ࢆ100㸣ࡋ㸪ྛᅜ ࡢ㏻ಙ㔞ࡢྜࢆどぬⓗᥦ♧ࡍࡿ㸬ࡲࡓ㸪ࢢ ࣛࣇྜࢃࡏ࡚㸪ᅜูࡢ㏻ಙ㔞ࣛࣥ࢟ࣥࢢࢆᥦ♧ ࡍࡿ㸬ࣛࣥ࢟ࣥࢢ࡛ࡣᅜྡ㸪ࡑࡢᑐᛂⰍ㸪㏻ಙ㔞 ࢆྜࢃࡏ࡚ᥦ♧ࡍࡿ㸬ᅜᑐᛂⰍࡢ㛵ಀᛶ㸪ࡲࡓ ㏻ಙ㔞ࢆᩥᏐ࣮࣋ࢫ࡛⾲♧ࡍࡿ㸬 2 ࡘ┠ࡣ㏻ಙ㔞ࡢ᥎⛣࡛࠶ࡾ㸪ࢢࣛࣇࡢ୰ ࣄࢫࢺࢢ࣒ࣛ≧ࡢᅗᙧࡋ࡚⾲⌧ࡍࡿ㸬Წࢢࣛࣇ ࡣ㸪1 ⛊ẖࡢ㏻ಙ㔞࡛࠶ࡿ㸬Წࢢࣛࣇࡢ⥲ᩘࡣ㸪 ⣙ 90 ಶ࡛࠶ࡾ㸪┤㏆㸯ศ༙ࡢ㏻ಙ㔞࡞ࡿ㸬㐃 ⥆ⓗ࡞㏻ಙ㔞ࢆᥦ♧ࡍࡿࡇ࡛㸪㏻ಙ㔞ࡢࣆ࣮ࢡ ࡞ࢆᢕᥱࡋࡸࡍࡃ࡞ࡿ㸬 3 ࡘࡢᡭ㡰ࡢ㛵ಀᛶࢆᅗ 4 ♧ࡍ㸬ᅗ 4 ࡼࡾ㸪 ࣃࢣࢵࢺࡢྲྀᚓࡽゎᯒ㸪ྍどࡲ࡛ࡢὶࢀࢆ☜ ㄆ࡛ࡁࡿ㸬 4 4㸬㸬⤖ᯝ᳨࣭ウ ᮏ◊✲࡛ࡣ㸪ࣃࢣࢵࢺ㏻ಙࢆㄆ㆑࡛ࡁࡿࣉࣜ ࢣ࣮ࢩࣙࣥࢆసᡂࡋࡓ㸬ᮏࣉࣜࢣ࣮ࢩࣙࣥࡣ㸪 ࣮࣮࢟࣎ࢻᕥྑ▮༳࣮࢟ࡼࡾ⾲♧ࡍࡿሗࢆ ษࡾ᭰࠼ࡿࡇࡀ࡛ࡁࡿ㸬୍᪉ࡣ㸪ẖᅇࡢ㉳ື ࡽࡶࡢ㸪ࡶ࠺୍᪉ࡣ㸪ึᅇࡢ㉳ືࡽࡢࡶࡢ ࡛࠶ࡿ㸬୧⪅ࡢ㐪࠸ࡣࢹ࣮ࢱ✚ᮇ㛫࠶ࡿ㸬๓ ⪅ࡣẖᅇࡢ㉳ືࡀ㉳Ⅼ࡛࠶ࡾ㸪ᚋ⪅ࡣึᅇࡢ㉳ ືࡀ㉳Ⅼ࡛࠶ࡿ㸬ࣄࢫࢺࢢ࣒ࣛ≧ࡢᅗᙧࡘ࠸ ࡚ࡣ㸪࠸ࡎࢀࡢሙྜࡶ㸪ẖᅇࡢ㉳ືࡽࡢࡶࡢ ࢆᥦ♧ࡍࡿ㸬๓⪅ࡢ⤖ᯝࢆᅗ5㸪ᚋ⪅ࡢ⤖ᯝࢆᅗ 6 ♧ࡍ㸬࡞࠾㸪࢟ࣕࣉࢳࣕᑐ㇟ࡣⴭ⪅ࡢ PC ࡛ ࠶ࡾ㸪ᐇ⾜ࡣ YouTube ࡚ື⏬ࢆ⏕ࡋ࡚ ࠸ࡿ㸬࢟ࣕࣉࢳࣕᮇ㛫ࡣ㸪ᅗ5 ࡀ⣙ 1 㛫㸪ᅗ 6 ࡀ⣙1 ࣨ᭶࡛࠶ࡿ㸬 ࣇ࣮࣒ࣞẖ ࢹ࣮ࢱྲྀᚓ ࢹ࣮ࢱ㏻ಙ ࣃࢣࢵࢺ ᥈⣴ ᅜࡈࡢ ㏻ಙሗ IPࢻࣞࢫ ᅜ ᳨⣴ࣟࢢ ࢹ࣮ࢱゎᯒ ࢿࢵࢺ࣮࣡ࢡ ࣥࢱࣇ࢙࣮ࢫ ㏻ಙࣟࢢ ྍど ࣥࢱ࣮ࢿࢵࢺ ཧ↷ࢹ࣮ࢱ ᅗ5 ᐇ⾜⏬㠃 ᅗ6 ᐇ⾜⏬㠃㸦ึᅇ㉳ື௨㝆㸧 ᅗ4 ྛᡭ㡰ࡢ㛵ಀᛶ
ᅗ5 ࡼࡾ㸪㏻ಙ㔞ࣛࣥ࢟ࣥࢢ࠾ࡼࡧࣄࢫࢺࢢࣛ ࣒≧ࡢᅗᙧࢆ☜ㄆ࡛ࡁࡿ㸬㏻ಙ㔞ࣛࣥ࢟ࣥࢢࡣ㸪 ࣮࢜ࢫࢺࣛࣜࡀ1 㸪᪥ᮏࡀ 2 㸪࣓ࣜ࢝ྜ ⾗ᅜࡀ 3 ࡛࠶ࡿ㸬ࡑࡢྜࡣୖࡽ 54.7㸣㸪 40.0㸣㸪3.1㸣࡛࠶ࡿ㸬ࣄࢫࢺࢢ࣒ࣛ≧ࡢᅗᙧ╔ ┠ࡍࡿ㸪ᐃᮇⓗࣆ࣮ࢡࢆグ㘓ࡋ࡚࠸ࡿࡇࢆ ☜ㄆ࡛ࡁࡿ㸬ࡇࢀࡣື⏬ࢆ⏕ࡍࡿୖ࡛㸪ࡲࡲ ࡗࡓࢹ࣮ࢱࢆᐃᮇⓗ࣮ࣟࢻࡋ࡚࠸ࡿࡓࡵ࡛࠶ ࡿ⪃࠼ࡽࢀࡿ㸬 ᅗ6 ࡛ࡣ㸪᪥ᮏࡀ 1 㸪࣓ࣜ࢝ྜ⾗ᅜࡀ 2 㸪 ࣮࢜ࢫࢺࣛࣜࡀ3 ࡞ࡗ࡚࠸ࡿ㸬ࡑࡢྜࡣ ᪥ᮏࡀ61.3㸣㸪࣓ࣜ࢝ྜ⾗ᅜࡀ 20.1㸣㸪࣮࢜ࢫ ࢺࣛࣜࡀ16.1㸣࡛࠶ࡿ㸬 ୖ2 ௳ࡘ࠸࡚ࡣ㸪ண㏻ࡾࡢ⤖ᯝ࠸࠼ࡿ㸬 ୍᪉࡛ 3 ࡢ࣮࢜ࢫࢺࣛࣜࡣணእ࡛࠶ࡗࡓ㸬 ࣮࢜ࢫࢺࣛࣜࡢ㏻ಙࡣ IPv6 ࢆ⏝ࡋࡓࡶࡢ ࡀࢇ࡛࠶ࡗࡓ㸬ヱᙜࡢࢻࣞࢫࢆㄪᰝࡍࡿ 㸪Google ♫ࡢࡶࡢ࡛࠶ࡗࡓ㸬Google ♫ࡀᗈ ࡞IPv6 ࡢࢻࣞࢫ✵㛫ࢆ࣮࢜ࢫࢺࣛࣜಖ᭷ ࡋ࡚࠾ࡾ㸪ࡑࡇ㢖⦾㏻ಙࡍࡿࡇࡼࡿࡶࡢ ࡛࠶ࡗࡓ㸬 ㏻ಙࣛࣥ࢟ࣥࢢࡢᅜྡࢆࢡࣜࢵࢡࡍࡿࡇ࡛ ࡼࡾヲ⣽࡞ሗࢆ⾲♧࡛ࡁࡿ㸬࣮࢜ࢫࢺࣛࣜࢆ ࢡࣜࢵࢡࡋࡓࡁࡢࢆᅗ7 ♧ࡍ㸬 ᅗ7 ࡼࡾ㸪࣮࢜ࢫࢺࣛࣜ㡯┠ࡢヲ⣽ሗࢆ☜ ㄆ࡛ࡁࡿ㸬ࣛࣥ࢟ࣥࢢ㡰㸪⥲㏻ಙ㔞ᑐࡍࡿ㏻ ಙ㔞ࡢྜ࡞ࡀ⾲♧ࡉࢀ࡚࠸ࡿ㸬ࡲࡓ㸪࣮࢜ࢫ ࢺࣛࣜࡢ㏻ಙ㔞ࡢෆ㸪㏦ಙ㔞ཷಙ㔞ࢆ☜ㄆ࡛ ࡁࡿ㸬ཷಙ㔞ࡀ㸪㏦ಙ㔞ࡢ⣙3.3 ಸ࡞ࡗ࡚࠸ࡿ㸬 IPv4 IPv6 ࡢ㡯┠ࡣ㸪࣮࢜ࢫࢺࣛࣜ࠾࠸ ࡚㸪ゎᯒࡀ⾜ࢃࢀࡓ᭱᪂ࡢ5 ௳ࡢࢻࣞࢫࢆ⾲♧ ࡋ࡚࠸ࡿ㸬IP ࢻࣞࢫࡣࡋ࡚㸪ᴗࡢࣞ࣋ࣝ ࡲ࡛≉ᐃࡀྍ⬟࡞ሙྜࡀ࠶ࡾ㸪ࡑࢀࢆㄪᰝࡍࡿ Web ࢧ࣮ࣅࢫࡣከࡃᏑᅾࡋ࡚࠸ࡿ㸬ࡇࡇ࡛ᚓࡽࢀ ࡓ IP ࢻࣞࢫࢆᥦ♧ࡍࡿࡇ࡛㸪࣮ࣘࢨࡢࡉࡽ ࡞ࡿゎᯒయ㦂ࡘ࡞ࡆࡽࢀࡿࡇࡀᮇᚅࡉࢀࡿ㸬 ࡇࡢࡶ㸪ከࡃࡢࡇࡀุ᫂ࡋࡓ㸬࠼ࡤ㸪 Windows ࢱࢫࢡࣂ࣮ᕥୗࡢࢸ࢟ࢫࢺ࣎ࢵࢡࢫࢆ ࢡࣜࢵࢡࡋࡓࡔࡅ࡛ࣃࢣࢵࢺ㏻ಙࡣ⾜ࢃࢀࡿ㸬ࡲ ࡓ㸪Chrome ࡣ᳨⣴ࢆࡋ࡞ࡃࡶࣈࣛ࢘ࢨࢆ㛤࠸ ࡓࡔࡅ࡛ࡶ㏻ಙࡀ⏕ࡌࡿ㸬YouTube ࡣྠ୍ࡢື⏬ ࡛࠶ࡗ࡚ࡶ㏻ಙᅜࡀኚࡍࡿ㸬ࡑࡋ࡚㸪Ꮫෆࡢࢿ ࢵࢺ࣮࣡ࢡࡣIPv6 ࣮࣋ࢫ࡛࠶ࡿࡇࡶุ᫂ࡋࡓ㸬 ఱࡶࡋ࡚࠸࡞࠸ࡢࡶ㛵ࢃࡽࡎ㸪ᐜ㔞ࡢࢹ࣮ ࢱࢆㄞࡳ㎸ࢇ࡛࠸ࡿࡇࡀ࠶ࡗࡓ㸬ࡇࡢཎᅉࡣ㸪 PC ࡢࢩࣕࢵࢺࢲ࢘ࣥ᫂ࡽ࡞ࡿ㸬᭦᪂ࣉ ࣟࢢ࣒ࣛࡢ㐺⏝ࡀጞࡲࡗࡓࡢ࡛࠶ࡿ㸬ࡘࡲࡾ㸪ࣂ ࢵࢡࢢࣛ࢘ࣥࢻ࡛᭦᪂ࢹ࣮ࢱࢆㄞࡳ㎸ࢇ࡛࠸ࡓ ࡇ࡞ࡿ㸬ࡇࡢࡼ࠺࡞ࣂࢵࢡࢢࣛ࢘ࣥࢻ࡛⏕ࡌ ࡿࣃࢣࢵࢺ㏻ಙࢆぢࡿࡇࡶྍ⬟࡛࠶ࡿ㸬 5 5㸬㸬࠾ࢃࡾ ᮏ◊✲࡛ࡣ㸪ࣃࢣࢵࢺ㏻ಙࢆྍどࡍࡿࣉࣜ ࢣ࣮ࢩࣙࣥࢆసᡂࡋࡓ㸬ࡇࢀࡼࡾ㸪ࣃࢣࢵࢺ㏻ ಙࢆࣜࣝࢱ࣒ㄆ㆑࡛ࡁࡿࡼ࠺࡞ࡗࡓ㸬㌟ ㏆࡞ࡀࡽࡶ㸪ࡑࡢㄆ㆑ࡀᅔ㞴࡛࠶ࡿࣃࢣࢵࢺ㏻ಙ ࢆྍどࡋࡓࡇࡣ㸪୍ᐃࡢព⩏ࡀ࠶ࡿ⪃࠼ࡽ ࢀࡿ㸬ᚋࡶ㌟㏆࡞ࡗ࡚࠸ࡃࣃࢣࢵࢺ㏻ಙᑐ ࡋ㸪ࡑࢀࢆㄆ㆑ࡍࡿᶵ࡞ࡿࡇࡀᮇᚅࡉࢀࡿ㸬 ᮏࣉࣜࢣ࣮ࢩࣙࣥࡣ㸪㉳ືࡍࡿࡔࡅ࡛⏝ྍ ⬟࡞≧ែࡋࡓ㸬ᑓ㛛ⓗ࡞ሗࡢᥦ♧ࡶྍ⬟࡞㝈 ࡾ᥍࠼ࡓ㸬ࡇࢀࡽࡣࡦ࠼㸪ᑓ㛛ⓗ࡞▱㆑ࢆᣢ ࡓࡎࡶ⏝࡛ࡁࡿࡼ࠺ࡍࡿࡓࡵ࡛࠶ࡿ㸬 ᮏࣉࣜࢣ࣮ࢩࣙࣥࡣ㸪ࣃࢣࢵࢺ㏻ಙࡢྍど ᅗ7 ヲ⣽⏬㠃 ཧ⪃ᩥ⊩
௨እࡢᶵ⬟ࡶ᭷ࡍࡿ㸬ࣃࢣࢵࢺ㏻ಙࢆゎᯒࡋ㸪ࡑ ࡢࢹ࣮ࢱࢆ✚ࡍࡿ㸬ࡑࡢࡓࡵ㸪ᮏࣉࣜࢣ࣮ࢩ ࣙࣥࢆぢ࡚࠸࡞ࡃࡶ㸪㉳ືࡋ࡚࠸ࡿࡔࡅ࡛㸪ࢹ ࣮ࢱ㞟ࣉࣜࢣ࣮ࢩࣙࣥࡋ࡚ࡶᶵ⬟ࡍࡿ㸬 ᚋࡢⓎᒎࡋ࡚㸪ࡼࡾᑓ㛛ⓗ࡞ሗ↔Ⅼࢆ ᙜ࡚ྍどࡍࡿࡇࡀ⪃࠼ࡽࢀࡿ㸬ࣉࣟࢺࢥࣝࡸ 㛫㍈ୖ࡛ࡢヲ⣽࡞ศᯒ࡞࡛࠶ࡿ㸬ࡲࡓࢫ࣐࣮ ࢺࣇ࢛ࣥࢆᑐ㇟ࡋࡓሙྜࡘ࠸᳨࡚ウࡍࡿࡇ ࡶ1 ࡘࡢ࡛࠶ࡿ㸬ࡇࡢࡣ㸪ࣃࢣࢵࢺ㏻ಙ ௨እࡢࢹ࣮ࢱ㏻ಙࢆྲྀࡾୖࡆࡿࡇࡶព⩏ࡀ࠶ ࡿ⪃࠼ࡽࢀࡿ㸬 ཧ ཧ⪃ᩥ⊩ 1㸧 ⥲ົ┬㹺ᖹᡂ 30 ᖺ∧ ሗ㏻ಙⓑ᭩㹺ࣥ ࢱ࣮ࢿࢵࢺࡢ⏝≧ἣ, http://www.soumu.go.jp/johotsusintokei/w hitepaper/ja/h30/html/nd252120.html㸬 2㸧 ᮧᒣබಖ㸸ᇶ♏ࡽࢃࡿ TCP/IP ࢿࢵࢺ࣡ ࣮ࢡࢥࣥࣆ࣮ࣗࢸࣥࢢධ㛛 ➨ 2 ∧, 121-126, ࣮࣒࢜♫ (2007)㸬 3㸧 ICANN ࡢᙺ - ICANN, https://www.icann.org/resources/pages/w hat-2012-02-25-ja㸬
4㸧 Digital Attack Map,
http://www.digitalattackmap.com㸬 5㸧 Overview / Processing.org, https://processing.org/overview/㸬 6㸧 ࣭࣋ࣥࣇࣛ, ࢣࢩ࣮࣭࣮ࣜࢫ (୰すὈே ヂ)㸸 Processing ࣅࢪࣗࣝࢹࢨࢼ࣮ ࣮ࢸࢫࢺࡢࡓࡵࡢࣉࣟࢢ࣑ࣛࣥࢢධ 㛛, 613, ࣅ࣮࣭࢚ࢾ࣭࢚ࢾ᪂♫ (2015)㸬 7㸧 GeoLite2 Free Downloadable Databases «
MaxMind Developer Site,
https://dev.maxmind.com/geoip/geoip2/ge olite2/㸬
ᖺ᭶᪥ཎ✏ཷ㸪 ᖺ;᭶;;᪥᥇㘓Ỵᐃ Received, Feb. 27, 2019; accepted, X. XX, XXXX
ᖺ ᭶ ᪥ཎ✏ཷ㸪 ᖺ ᭶ ᪥᥇㘓Ỵᐃ 5HFHLYHG)HEUXDU\ DFFHSWHG0DUFK
