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Takehiro Yamaguchi
January 01, 2019
Technology
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ネットワークについて
Takehiro Yamaguchi
January 01, 2019
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Transcript
ωοτϫʔΫ ωοτϫʔΫٕज़Λֶͼ͍ͨͯ͢ͷਓʹ
࣍ ωοτϫʔΫͱ ωοτϫʔΫͱΠϯλʔωοτͱWebͷҧ͍ LANͱWAN αʔόʔͱ ίϯϐϡʔλʔωοτϫʔΫ TCP/IPͱ σʔλΛૹΔ४උ ύέοτΛӡͿΠϯλʔωοτ௨৴ͷجૅ IP
TCP/UDP
ຊͷϨοεϯ ςʔϚ ωοτϫʔΫ త ௨৴ͷجૅΛΔ͜ͱͰɺϓϩάϥϛϯάशಘΛૣΊΔ ΰʔϧ ωοτϫʔΫͰσʔλ͕૬खʹಧ͘ྲྀΕΛཧղͰ͖͍ͯΔ
ωοτϫʔΫͱ͍͑ʁ ιʔγϟϧωοτϫʔΫ SNS ࿈བྷ ަ௨ͷωοτϫʔΫ ిं ಓ࿏ ٸศ ༣ศہɺϠϚτӡ༌ɺࠤٸศ ίϯϐϡʔλʔωοτϫʔΫ
ޫճઢɺϞόΠϧճઢɺܞଳి
ωοτϫʔΫͬͯԿʁ
Կ͔ͱԿ͔Λͭͳ͛ͯ Կ͔ΛӡͿͷ ఆ͚ٛͬ͜͏ᐆດͰ໌֬ͳͷͳ͍Ͱ͢ SNS ਓͱਓΛͭͳ͛ͯใΛӡͿ ిं ӺͱӺΛͭͳ͍Ͱं྆ʢਓՙʣΛӡͿ
ίϯϐϡʔλωοτϫʔΫ ίϯϐϡʔλʔͱίϯϐϡʔλʔΛͭͳ͍ͰσʔλΛӡ Ϳ ݫີʹ͍͏ͱΞϓϦέʔγϣϯͱΞϓϦέʔγϣϯΛͭ ͳ͗·͢
ʲϫʔΫʳߟ͑ͯΈΑ͏ʂ తʁ ωοτϫʔΫͬͯͳΜͰඞཁͳͷʁ ϝϦοτʁ ͲΜͳΛղܾ͍ͯ͠·͔͢ʁ σϝϦοτʁ Ͳ͏͍ͬͨͱ͖ʹϚζΠ͜ͱ͕ى͜Γಘ·͔͢ʁ
ճྫ తʁ Ϧιʔεͷڞ༗ ϝϦοτʁ ϦιʔεΛޮΑ͘׆༻Ͱ͖Δ ཧָ͕ σϝϦοτʁ ͳ͘ͳͬͨΓյΕͨΓ͢ΔͱӨڹ͕Ͱ͔͍
ωοτϫʔΫͱΠϯλʔωοτͱ WEBͷҧ͍
શ෦Ұॹ͡Όͳ͍ͷʁ શવҧ͏ͷΛࢦ͠·͢ ίϯϐϡʔλʔωοτϫʔΫʼΠϯλʔωοτʼWeb
Πϯλʔωοτͱ ੈքنͷWANͷ͜ͱ
LANͱWAN LAN(local area network) ݶఆ͞Εͨڱ͍ൣғͷωοτϫʔΫ WAN(wide area network) LANͱLANΛͭͳ͍͍ͩൣғͷωοτϫʔΫ
౦ژຊࣾ େࡕࢧళ ໊ݹࢧళ ϦϏϯά ৸ࣨ ࢠڙ෦ LAN WAN
LANͱWANͷݟ͚ํ ެڞͷࢪઃΛհ͢Δ͔Ͳ͏͔ NTTɺ౦ిͳͲ ਓӴ ւఈέʔϒϧ WANʮLANͱLANΛͭͳ͙ެऺʯͷҙຯͰΘΕΔ͜ͱ ͕ଟ͍
WEBͱʁ ʮΠϯλʔωοτʯΛ׆༻ͯ͠ɺจষը૾ɺಈըͳͲΛ Ӿཡͨ͠Γ৴ͨ͠ΓͰ͖Δʢڞ༗Ͱ͖ΔʣαʔϏεͷ͜ ͱ
αʔόʔͱ ̎छྨ͋Δ ϋʔυΣΞΛࢦ͢߹ ιϑτΣΞΛΠϯετʔϧ͢Δίϯϐϡʔλʔͷ͜ͱ ιϑτΣΞΛࢦ͢߹ Webαʔόʔɺϝʔϧαʔόʔ
ωοτϫʔΫͷྲྀΕ σʔλ͍͔ʹͯ͠ӡΕΔͷ͔ʁ
͔͜͜ΒਤղͰղઆ͍͖ͯ͠·͢ ϗϫΠτϘʔυͰྲྀΕΛղઆ͍͖ͯ͠·͢ ॱ൪ʹΈͳ͞Μϊʔτʹॻ͍͍ͯͬͯҰॹʹྲྀΕΛͬ ͍͖ͯ·͠ΐ͏ ࢿྉΛ͝ཡʹͳΒΕ͍ͯΔํɺಈըΛݟͳ͕ΒਐΊ͍ͯͬ ͍ͯͩ͘͞
ͦͷଞͷ͓͖͍ͬͯͨ༻ޠ ϞσϜɺONUͷҧ͍ʁ ϧʔλʔͬͯԿʁϞσϜͱҧ͏ͷʁ ΞΫηεϙΠϯτͬͯԿʁ ϓϩόΠμʢOCN, So-net, Biglobe, auޫͳͲʣͬͯԿʁ ΫϥυͬͯԿʁ VPNͬͯԿʁ