広島大学におけるキャンパス無線LANシステム～キャリアWi-Fiとの共同利用と可搬型アクセスポイントの導入～

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(1)Vol.2014-IOT-26 No.7 2014/6/28. ৘ใॲཧֶձ‫ڀݚ‬ใࠂ IPSJ SIG Technical Report. ޿ౡେֶʹ͓͚ΔΩϟϯύεແઢ LAN γεςϜ ʙΩϟϦΞ Wi-Fi ͱͷ‫ڞ‬ಉར༻ͱՄൖ‫ܕ‬ΞΫηεϙΠϯτͷಋೖʙ େ౦ ढ़ത1,a). ٢ా ๎඙1. ‫ ాؠ‬ଇ࿨1. ੢ଜ ߒೋ1 ૬‫ྰ ݪ‬ೋ1. ాౡ ߒҰ1. ۙಊ ప1. ‫؛‬৔ ਗ਼‫ޛ‬1. ֓ཁɿຊൃදͰ͸޿ౡେֶʹ͓͚ΔΩϟϯύεແઢ LAN γεςϜʢHINET Wi-Fiʣʹ͍ͭͯ঺հ͢Δɽ ಛʹ࠷ۙαʔϏεΛ։࢝ͨ͠ΩϟϦΞ Wi-Fi ͱͷΞΫηεϙΠϯτ‫ڞ‬ಉར༻͓ΑͼՄൖ‫ܕ‬ΞΫηεϙΠϯ τͷಋೖʹ͍ͭͯಋೖͷ‫ܦ‬Ң΍۩ମతͳ࣮‫ํݱ‬๏ʹ͍ͭͯࣔ͢ɽ. A Campus-wide Wireless LAN System in Hiroshima University — Shared Access Points with Carrier Wi-Fi and Providing Portable Access Points — Toshihiro Ohigashi1,a) Tomohiko Yoshida1 Norikazu Iwata1 Kouji Nishimura1 Koichi Tashima1 Tohru Kondo1 Seigo Kishiba1 Reiji Aibara1. Abstract: This paper presents recent topics of HINET Wi-Fi, which is a campus-wide wireless LAN system in Hiroshima University. The first topic is to share access points for HINET Wi-Fi with several carrier Wi-Fi. The second topic is to provide portable access points for HINET Wi-Fi. We describe the purpose and the detail of implementation for these topics.. 1. ͸͡Ίʹ. ‫ͯ͠ͱ؀‬ɼϊʔτύιίϯͳͲ࣋ͪࠐΈ୺຤ʹରͯ͠ແઢ. LAN ‫ڥ؀‬Λఏ‫͢ڙ‬ΔͨΊʹ։࢝͞ΕͨɽHINET2007 ͷӡ. 2008 ೥౓ΑΓ޿ౡେֶͰ͸ɼओཁ 3 Ωϟϯύεʢ౦޿. ༻͕࢝·Δ·ͰͷؒɼΩϟϯύεແઢ LAN ͷར༻ऀೝূ͸. ౡΩϟϯύεɼբΩϟϯύεɼ౦ઍాΩϟϯύε)ɼෟଐ. จ‫[ ݙ‬4] Λ΋ͱʹ։ൃ͞Εͨ FEREC*1 Λ༻͍ͯఏ‫͞ڙ‬Ε. ֶߍʢਯ஍۠ɼ౦Ӣ஍۠ɼࡾ‫ݪ‬஍۠ɼ෱ࢁ஍۠ʣ͓Αͼখ. ͨɽHINET2007 ͷӡ༻͕։࢝͞ΕͯҎདྷɼར༻ऀೝূͷ. ‫ن‬໛ԕִ෦‫ہ‬ʢ‫ޖ‬ɼ஛‫ݪ‬ɼ౦‫ژ‬ΦϑΟε౳ʣΛ‫ؚ‬ΉΩϟϯ. HINET2007 ೝূεΠον΁ͷมߋʢ2008 ೥ʣɼແઢ LAN. ύεωοτϫʔΫ HINET2007 ͕ӡ༻͞Ε͍ͯΔ [1], [2]ɽ. ίϯτϩʔϥʹΑΔແઢ LAN ΞΫηεϙΠϯτ (AP) ͷ. HINET2007 Ͱ͸ਤ 1 ͷΑ͏ʹશΩϟϯύεʹ߹‫ܭ‬໿ 40 ୆. ؅ཧҰ‫ݩ‬Խʢ2008 ೥ʣ ɼແઢ LAN ηΩϡϦςΟ‫ڧ‬ԽͷͨΊ. ͷ‫ݐ‬෺ू໿εΠον͓Αͼ໿ 500 ୆ͷೝূ‫ػ‬ೳ෇͖ͷϑ. WEP ͔Β WPA2 ΤϯλʔϓϥΠζ (EAP-PEAP) ΁ͷߋ. ϩΞεΠονΛ੔උ͍ͯ͠ΔɽωοτϫʔΫͷར༻ऀ͸‫ݪ‬. ৽ʢ2010 ೥ʣ ɼWeb ೝূͷ SSO Խͱֶೝʢֶज़ೝূϑΣσ. ଇͱͯ͠࠷‫د‬ΓͷϑϩΞεΠονΛೝূϙΠϯτͱͯ͠ɼ. Web ೝূ/MAC ೝূʹΑΔར༻ऀೝূ͕ཁ‫͞ٻ‬ΕΔɽ. Ϩʔγϣϯʣ࿈‫ʹܞ‬ΑΔήετར༻αʔϏεͷ։࢝ [5], [6] ʢ2011 ೥ʣɼࠃࡍແઢ LAN ϩʔϛϯά‫ج‬൫ eduroam[7] ͷ. ޿ౡେֶͷΩϟϯύεແઢ LAN ͷ੔උ͸ɼ2004 ೥͔Β. αʔϏε։࢝ʢ2012 ೥ʣ ɼͷΑ͏ʹ؅ཧ໘΍ηΩϡϦςΟ/. ։࢝͞ΕͨΩϟϯύεɾϢϏΩλεɾϓϩδΣΫτ [3] ͷҰ. རศੑͷվળ͕೥ʑਤΒΕ͓ͯΓɼ‫ࡏݱ‬ɼΩϟϯύεແઢ. 1. a). ޿ౡେֶ৘ใϝσΟΞ‫ڭ‬ҭ‫ڀݚ‬ηϯλʔ ˟ 739–8511 ޿ౡ‫ݝ‬౦ ޿ౡࢢ‫ ࢁڸ‬1–4–2 Information Media Center, Hiroshima University 1–4– 2 Kagamiyama, Higashi-Hiroshima, Hiroshima 739–8511, Japan [email protected]. ⓒ 2014 Information Processing Society of Japan. LAN ͸ HINET Wi-Fi ͱ͍͏໊শͰ HINET2007 ͷҰ෦ͱ ͯ͠ӡ༻͞Ε͍ͯΔɽ ຊߘͰ͸ɼεϚʔτϑΥϯͷී‫ʹͲͳٴ‬ΑΔແઢ LAN *1. http://www.ferec.jp/. 1.

(2) Vol.2014-IOT-26 No.7 2014/6/28. ৘ใॲཧֶձ‫ڀݚ‬ใࠂ IPSJ SIG Technical Report. ᅜ❧᝟ሗᏛ◊✲ᡤ IdP. ᣢ䛱㎸䜏 ➃ᮎ. HINET-SP (ᵓᡂဨ⏝). HINET-SP (䝀䝇䝖⏝). 䕿䕿኱Ꮫ IdP. ᅜ❧᝟ሗᏛ◊✲ᡤ. ᗈᓥ኱Ꮫ. 䕿䕿኱Ꮫ. IdP. SINET4䛺䛹. ᮾᗈᓥ䜻䝱䞁䝟䝇. 䝣䝻䜰䝇䜲䝑䝏䠄᭱ᐤ䛾PSෆ䛺䛹䠅. 100Mbps䡚1Gbps. ᘓ≀㞟⣙䝇䜲䝑䝏䠄୺せᘓ≀ෆ䠅䠎㔜໬䛻䜘䜚 ྍ⏝ᛶྥୖ. ᶵ⬟. VLANᶵ⬟ VLAN. 㒊ᒁᩚഛ䞉㒊ᒁ⟶⌮. 10Gbps. ᑐእ᥋⥆ 䝹䞊䝍. ඲䜻䝱䞁䝟䝇ྜ ィ⣙઎. 䝕䞊䝍䝉䞁䝍䞊 ෆ䛻タ⨨ 䜻䝱䞁䝟䝇㞟⣙ 䝇䜲䝑䝏. 㟘䜻䝱䞁䝟䝇. ィ⏬೵㟁ᑐ⟇ 10Gbps. ඲䜻䝱䞁䝟䝇ྜ ィ⣙઎ 䜻䝱䞁䝟䝇ෆ ᇶᖿග䝣䜯䜲䝞. ฼⏝⪅ㄆド ᶵ⬟. ㄆド⏝LDAP (ᵓᡂဨ䠈䝀䝇䝖ే⏝). 䜻䝱䞁䝟䝇㛫 ග䝣䜯䜲䝞䝁䜰䝛䝑䝖䝽䞊䜽⿦⨨ 䠄䝯䝕䜱䜰䝉䞁䝍䞊ෆ䠅. 䜻䝱䞁䝟䝇㞟⣙ 䝇䜲䝑䝏 ᮾ༓⏣䜻䝱䞁䝟䝇. ඲Ꮫᩚഛ䞉඲Ꮫ⟶⌮ ਤ 1. 㒊ᒁᩚഛ䞉㒊ᒁ⟶⌮. HINET2007 ͷ֓ཁ. ͷར༻ऀ਺૿Ճ΁ͷରԠΛ໨తͱ࣮ͯ͠ࢪͨ͠ɼHINET. 䝁䜰䝛䝑䝖䝽䞊䜽⿦⨨ 䠄䝯䝕䜱䜰䝉䞁䝍䞊ෆ䠅. Wi-Fi ͷΞΫηεϙΠϯτͱΩϟϦΞ Wi-Fi ͷ‫ڞ‬ಉར༻ WLC-1. ʢ2012 ೥ʣ͓ΑͼՄൖ‫ܕ‬ΞΫηεϙΠϯτͷಋೖʢ2014 ೥ʣ. WLC-2. HINET Wi-Fi. ㄆド䝇䜲䝑䝏. PI. ʹ͍ͭͯಋೖͷ‫ܦ‬Ң΍࣮‫ݱ‬ͷํ๏ʹ͍ͭͯ঺հ͢Δɽ. 2. HINET Wi-Fi 2.1 ߏ੒. ⟶⌮⏝. VLAN (CAPWAP Tunnel). HINET Wi-Fi. 㞟⣙䝇䜲䝑䝏 ᮾᗈᓥ䜻䝱䞁䝟䝇㞟⣙䝇䜲䝑䝏䝣䝻䜰䝇䜲䝑䝏. HINET Wi-Fi Ͱ͸ແઢ LAN ίϯτϩʔϥʹΑͬͯ؅ཧ ͞ΕͨΞΫηεϙΠϯτ‫ʹ܈‬ΑͬͯαʔϏε͕ఏ‫͞ڙ‬Εͯ ͓Γɼ‫ࡏݱ‬໿ 400 ୆ͷΞΫηεϙΠϯτ͕ਤॻ‫ؗ‬ɾ৯ಊɾ. 䝴䞊䝄⏝VLAN (SSIDẖ). Internet. 䜻䝱䝸䜰Wi-Fi⏝ 䝇䜲䝑䝏. AP. ॓ധࢪઃɾֶੜϗʔϧ౳ͷ‫༻ڞ‬εϖʔε΍େ‫ܕ‬ͷߨٛࣨɾ ձٞࣨ౳ʹઃஔ͞Ε͍ͯΔɽ. ਤ 2. HINET Wi-Fi ͷωοτϫʔΫߏ੒ͷ֓ཁ. ਤ 2 ʹ HINET Wi-Fi ͷωοτϫʔΫߏ੒ɼද 1 ʹ HINET. Wi-Fi ༻ͷ‫ثػ‬ͷ࢓༷ͱ୆਺Λࣔ͢ɽ௨ৗɼHINET2007 Ͱ͸઀ଓ‫ثػ‬͸࠷‫د‬ΓͷϑϩΞεΠονΛೝূϙΠϯτ ͱͯ͠ར༻ऀೝূΛཁ‫͢ٻ‬Δɽ͔͠͠ɼHINET Wi-Fi Ͱ ͸ແઢ LAN ίϯτϩʔϥͰҰ‫ݩ‬؅ཧ͢ΔͨΊʹΞΫηε ϙΠϯτͱແઢ LAN ίϯτϩʔϥؒ͸ೝূ͕ෆཁͳઃఆ Λͨ͠؅ཧ༻ VLAN ʹΑΓ઀ଓ͢Δ͜ͱͱ͠ɼϢʔβೝ ূ͸ແઢ LAN ίϯτϩʔϥΛ௨ͯ͠ΞΫηε͢ΔϢʔβ ༻ VLAN ͷ‫ڥ‬քͰߦ͏ߏ੒ͱͳ͍ͬͯΔɽແઢ LAN ؅ཧ γεςϜ͸ແઢ LAN ίϯτϩʔϥ΁ͷઃఆͷ౤ೖ΍ແઢ. LAN ΞΫηεϙΠϯτͷઃஔҐஔͷ؅ཧɼϩάͷऩूͳ ͲͷิॿతͳॲཧΛߦ͍ͬͯΔɽ ΞΫηεϙΠϯτͱແઢ LAN ίϯτϩʔϥؒͷ௨৴͸ ୯Ұͷ؅ཧ༻ VLAN ্Ͱ CAPWAPʢControl And Provi-. sioning of Wireless Access PointsʣϓϩτίϧʹΑͬͯτ ϯωϦϯά͞Εɼແઢ LAN ίϯτϩʔϥͰ SSID ຖʹແ ઢ LAN ͷೝূʢEAP-PEAP ͳͲʣΛߦ্ͬͨͰରԠ͢Δ Ϣʔβ༻ VLAN ΁ΫϥΠΞϯτ୺຤Λ઀ଓͤ͞ΔɽSSID ʹରԠ͢ΔϢʔβ༻ VLAN ʹԠͯ͡ Web ೝূͷ༗ແ΍઀ ଓઌωοτϫʔΫΛઃఆ͢Δ͜ͱͰॊೈͳωοτϫʔΫ αʔϏεͷఏ‫ڙ‬Λ࣮‫͍ͯ͠ݱ‬Δɽ. 2.2 ఏ‫ڙ‬αʔϏε HINET Wi-Fi Ͱ͸Ϛϧν SSID ‫ػ‬ೳΛ༻͍ͯෳ਺ͷαʔ ϏεΛҰͭͷΞΫηεϙΠϯτ্Ͱఏ‫͍ͯ͠ڙ‬ΔɽHINET. ⓒ 2014 Information Processing Society of Japan. 2.

(3) Vol.2014-IOT-26 No.7 2014/6/28. ৘ใॲཧֶձ‫ڀݚ‬ใࠂ IPSJ SIG Technical Report ද 1. HINET Wi-Fi ༻ͷ‫ثػ‬. ‫໊ثػ‬শ. ࢓༷. ୆਺. ແઢ LAN ίϯτϩʔϥ. Cisco 5500 Series Wireless Controller (ਤதͰ͸ WLC-1, WLC-2 ͱද‫)ه‬. 2. ແઢ LAN ؅ཧγεςϜ. Cisco Prime Infrastructure version 1.3 (ਤதͰ͸ PI ͱද‫)ه‬. 1. ແઢ LAN ΞΫηεϙΠϯτ. Cisco AIR-LAP1042N-P-K9/AIR-LAP1131AG-P-K9/AIR-CAP1602I-Q-K9. HINET Wi-Fi ू໿εΠον. Alaxala AX2430S. 1. HINET Wi-Fi ೝূεΠον. Alaxala AX2530S. 5. ද 2 αʔϏε໊. SSID. ֶ಺ऀ༻઀ଓ. HU-CUPXX*2. ໿ 400. HINET Wi-Fi Ͱఏ‫͍ͯ͠ڙ‬ΔαʔϏε. ೝূ. ઀ଓωοτϫʔΫ. ແઢ LAN: EAP-PEAP(޿େ. ID*3. ͱύεϫʔυͰೝূ). ֶ಺ऀ༻ωοτϫʔΫ. ར༻ऀೝূ: Web ೝূ (޿େ ID ͱύεϫʔυͰೝূ) ֶ֎ऀ༻઀ଓ. HU-Guest. ແઢ LAN: EAP-PEAP(‫ڞ‬௨ͷ ID ͱύεϫʔυͰೝূ). ήετ༻ωοτϫʔΫ. ར༻ऀೝূ: Web ೝূ (ήετΞΧ΢ϯτ or ֶೝ IdP ͷΞΧ΢ϯτ) ͱύεϫʔυͰೝূ). eduroam. eduroam. ແઢ LAN: EAP-PEAP(eduroam ༻ΞΧ΢ϯτͱύεϫʔυͰೝূ). ήετ༻ωοτϫʔΫ. ར༻ऀೝূ: ͳ͠ (ແઢ LAN ͷೝূͷΈ) ΩϟϦΞ Wi-Fi. ֤ΩϟϦΞͷ SSID. ֤ΩϟϦΞͷೝূํࣜ. Wi-Fi Ͱఏ‫͍ͯ͠ڙ‬ΔαʔϏεΛද 2 ʹࣔ͢ɽ. ֶ֎ωοτϫʔΫ. HINET Wi-Fi ೝূεΠονͰͷ Web ೝূͱֶೝͷ࿈‫ܞ‬. ֶ಺ͷओཁͳαʔϏεͱֶͯ͠಺ऀ༻઀ଓαʔϏεͱ. ΋ֶ಺ऀ༻઀ଓαʔϏεͱಉ༷ͷํ๏ʹΑ࣮ͬͯ‫͍ͯ͠ݱ‬. ֶ֎ऀ༻ʢήετ༻ʣ઀ଓαʔϏε͕͋ΔɽͲͪΒͷαʔ. Δɽֶೝͱͷ࿈‫ܞ‬Λ༰қʹ͢ΔͨΊʹ EAP-PEAP ͷೝূ. Ϗε΋ EAP-PEAP ʹΑͬͯແઢ LAN ͱͯ͠ͷೝূΛߦ. ʹ‫ڞ‬௨ͷ ID ͱύεϫʔυΛ༻͍͓ͯΓɼID ͱύεϫʔυ. ͍ɼͦͷ‫ޙ‬ɼHINET Wi-Fi ೝূεΠονͷ Web ೝূʹ. ͸ֶ಺ʹ‫͍ͯࣔ͠ܝ‬Δ HINET Wi-Fi ͷϙελʔʹ‫͢ࡌه‬. Αͬͯར༻ऀೝূΛߦ͏ɽਤ 2 ͷΑ͏ʹ HINET Wi-Fi ू. Δ͜ͱͰར༻ऀʹ఻͑ΒΕΔɽEAP-PEAP ͸ύεϫʔυ. ໿εΠον͔ΒίΞωοτϫʔΫ૷ஔʹંΓฦ్͢தʹ. ʹΑΔΞΫηε੍‫ͱޚ‬ϥϯμϜͳ҉߸Խ‫ݤ‬ͷ҆શͳ഑෍ͷ. HINET Wi-Fi ೝূεΠον (ֶ಺ऀ༻͸ 4 ୆Ͱෛՙ෼ࢄɼ. ‫ػ‬ೳΛ͍࣋ͬͯΔ͕ɼ্‫ه‬ͷӡ༻ʹΑͬͯΞΫηε੍‫͕ޚ‬. ֶ֎ऀ༻͸ 1 ୆) Λઃஔ͢Δ͜ͱͰ͜ΕΒͷαʔϏεͷ࢖. ࣦΘΕΔɽ͔͠͠ͳ͕Βɼແઢ LAN ઀ଓ‫ ʹޙ‬Web ೝূʹ. ༻࣌ʹ Web ೝূ͕ཁ‫͞ٻ‬ΕΔΑ͏ʹ͍ͯ͠Δɽͳ͓ɼϢʔ. ΑͬͯωοτϫʔΫ΁ͷΞΫηε੍‫͞ݱ࣮͕ޚ‬Εɼϥϯμ. β༻ VLAN ʹ઀ଓ͢Δͷ͸ແઢ LAN ͷೝূʹ੒ޭͨ͠‫ޙ‬. Ϝͳ҉߸Խ‫ݤ‬͸Ϣʔβຖʹಠཱʹੜ੒͞ΕΔͨΊɼPEAP. Ͱ͋Γɼͦͷࡍʹ͸ DHCP ʹΑͬͯ޿ౡେֶͷ IP ΞυϨ. ͷΈͰ઀ଓͤ͞Δ৔߹ͱಉ౳ͷ҆શੑ͸୲อ͞Ε͍ͯΔ͜. ε (άϩʔόϧΞυϨε) ͕෷͍ग़͞ΕΔɽ. ͱʹ஫ҙ͞Ε͍ͨɽ. ֶ಺ऀ༻઀ଓαʔϏεͰ͸ EAP-PEAP ͷೝূͱ Web. HINET Wi-Fi Ͱ͸ࠃࡍແઢ LAN ϩʔϛϯά‫ج‬൫Ͱ͋Δ. ೝূͷͲͪΒ΋޿ౡେֶͷ‫ݸ‬ਓ ID Ͱ͋Δ޿େ ID ͱύε. eduroam ΋αϙʔτ͍ͯ͠Δɽeduroam Ͱ͸ EAP-PEAP. ϫʔυʹΑͬͯߦ͍ɼֶ಺‫ݶ‬ఆͷωοτϫʔΫΛ‫ؚ‬Ή޿ౡ. ʹΑͬͯࣗ਎ͷॴଐ૊৫ͷ radius αʔόͰೝূ͢Δ͜ͱʹ. େֶ಺֎ͷωοτϫʔΫ (ֶ಺ऀ༻ωοτϫʔΫ) ΁ͷ઀ଓ. ΑͬͯωοτϫʔΫΛ࢖༻ͤ͞Δ࢓૊ΈͰ͋ΔͨΊɼWeb. ͕‫ڐ‬Մ͞ΕΔɽHINET Wi-Fi ೝূεΠονʹΑΔ Web ೝ. ೝূʹΑΔ 2 ࣍తͳར༻ऀೝূ͸ཁ‫͍ͳ͠ٻ‬ɽeduroam ͷ. ূ͸จ‫[ ݙ‬5], [6] ͰఏҊ͍ͯ͠Δख๏ʹΑͬͯ Shibboleth. ཁ݅Λຬͨͨ͢Ίʹɼֶ֎ऀ༻઀ଓαʔϏε༻ͷ HINET. ͷγϯάϧαΠϯΦϯ (SSO) ʹରԠ͍ͤͯ͞Δɽ. Wi-Fi ೝূεΠονʹೝূΛཁ‫͍ͳ͠ٻ‬ϙʔτΛ࡞੒͠ɼ. ֶ֎ऀ༻઀ଓαʔϏεͰ͸ɼEAP-PEAP ͷೝূ͸‫ڞ‬௨ ͷ ID ͱύεϫʔυʹΑͬͯߦ͍ɼͦͷ‫ޙ‬ͷ Web ೝূ͸ή. ͦ͜Λ௨ͯ͠ίΞωοτϫʔΫ૷ஔʹ઀ଓ͢ΔΑ͏ʹઃ‫ܭ‬ Λͨ͠ɽ. ετΞΧ΢ϯτ (ຊֶͰൃߦ) ·ͨ͸ֶೝʹࢀՃ͢Δ֤૊. ଞʹ HINET Wi-Fi ͷΞΫηεϙΠϯτͰ͸ΩϟϦΞ. ৫͕ઃஔ͢Δ IdP ͷΞΧ΢ϯτͱύεϫʔυʹΑͬͯߦ. Wi-Fi ͷ SSID ΋αϙʔτ͍ͯ͠Δ͕ɼೝূ͸ΩϟϦΞຖ. ͏ɽWeb ೝূ‫ޙ‬ɼֶ಺‫ݶ‬ఆωοτϫʔΫ΁ͷ઀ଓ੍͕‫͞ݶ‬. ʹࢦఆ͍ͯ͠ΔೝূํࣜͰߦ͍ɼωοτϫʔΫ͸ίΞωο. Εͨήετ༻ωοτϫʔΫ΁ͷ઀ଓ͕‫ڐ‬Մ͞ΕΔɽͳ͓ɼ. τϫʔΫ૷ஔΛ‫ܦ‬༝ͤͣʹֶ֎ωοτϫʔΫʹ઀ଓ͢ΔΑ ͏ʹ͍ͯ͠ΔɽΩϟϦΞ Wi-Fi ͷৄࡉ͸࣍ষͰઆ໌͢Δɽ. *2. *3. ৔ॴຖʹ XX ͷ਺ࣈΛม͑ͯ؅ཧ͓ͯ͠ΓɼHU-CUP10(౦޿ౡ ๺஍۠)ɼHU-CUP11(ཧֶ෦)ɼHU-CUP20(౦޿ౡ౦஍۠)ɼHUCUP30(౦޿ౡ੢஍۠)ɼHU-CUP40(բ஍۠)ɼHU-CUP50(౦ ઍా஍۠ɼͦͷଞ) ͱ͍ͯ͠Δɽ ޿େ ID ͸޿ౡେֶͷશֶ ID ‫ج‬൫ʹొ࿥͞Ε͍ͯΔ‫ݸ‬ਓ ID Ͱ ͋Δɽ. ⓒ 2014 Information Processing Society of Japan. 3. ΩϟϦΞ Wi-Fi ͱͷ‫ڞ‬ಉར༻ 3.1 ಋೖͷ‫ܦ‬Ң ௨৴ࣄ‫ऀۀ‬͸ϞόΠϧ௨৴໢ͷτϥϑΟοΫΛܰ‫͢ݮ‬Δ. 3.

(4) Vol.2014-IOT-26 No.7 2014/6/28. ৘ใॲཧֶձ‫ڀݚ‬ใࠂ IPSJ SIG Technical Report. ͨΊʹɼτϥϑΟοΫΛແઢ LANʢΩϟϦΞ Wi-Fiʣʹಀ ͕͢ Wi-Fi ΦϑϩʔυΛਐΊ͍ͯΔɽΩϟϦΞ Wi-Fi ͷ ઃஔઌͷ֦େͷҰ෦ͱͯ͠ɼෳ਺ͷ௨৴ࣄ‫͔ऀۀ‬Βຊֶ΁ ֶ಺΁ͷઃஔͷཁ๬͕͋ͬͨɽ͔͠͠ͳ͕Βɼ֤ΩϟϦΞ ͕ಠࣗʹΞΫηεϙΠϯτΛઃஔͨ͠৔߹ɼి೾ͷ‫ׯ‬বʹ ΑΓֶ಺Ͱఏ‫͍ͨͯ͠ڙ‬ແઢ LAN αʔϏεͷੑೳ௿Լʹ ͭͳ͕ͬͯ͠·͏ɽ·ͨɼ૯຿লແઢ LAN Ϗδωε‫ڀݚ‬ ձͷୈ 7 ճձ߹഑෍ࢿྉ [8] Ͱ͸ɼແઢ LAN ʹ܎Δి೾ͷ ‫ׯ‬বɾ᫔᫓ʢࠞࡶʣͷ؇࿨ʹ޲͚ͨରԠͱͯ͠ʮ·ͨɺύ ϒϦοΫεϖʔε౳ʹ͓͍ͯ͸ɺ‫ܕ༻ڞ‬ΞΫηεϙΠϯτ ʹ͍ͭͯ΋ɺ༗ޮͳి೾ͷ᫔᫓ରࡦͷखஈͱͳΓ͏Δͱߟ. ਤ 3. ౦޿ౡ౦஍۠Ͱ઀ଓͰ͖Δ SSID ͷྫ. ͑ΒΕΔɻ ʯͱ໌‫͞ه‬Ε͍ͯΔɽͦ͜Ͱɼ޿ౡେֶͰ͸֤௨ ৴ࣄ‫ྗڠʹऀۀ‬Λཁ੥͠ɼHINET Wi-Fi ͷΞΫηεϙΠ ϯτΛΩϟϦΞ Wi-Fi ͱ‫͢༻ڞ‬Δ͜ͱͰ‫ׯ‬ব΍᫔᫓ͷ໰୊ ʹରͯ͠ରԠ͢Δ͜ͱʹͨ͠ɽ ҰํɼHINET Wi-Fi ଆͰ΋εϚʔτϑΥϯͷී‫ʹٴ‬Α Δແઢ LAN ͷར༻ऀ਺૿Ճ΁ରԠ͢ΔͨΊʹΩϟϦΞ. Wi-Fi ͷֶ಺΁ͷઃஔ͸‫ܴ͞׻‬ΕͨɽΩϟϯύεɾϢϏΩ λεɾϓϩδΣΫτͱͯ͠੔උ͞Εͨࠒ͸ɼֶੜ͕ೖֶ࣌ ʹߪೖͨ͠ϊʔτύιίϯʢେֶਪ঑ύιίϯʣͷ઀ଓΛ ओ໨తͱͯ͠੔උ͞Ε͓ͯΓɼར༻ऀ਺͸ͳͩΒ͔ʹ૿Ճ ͢Δఔ౓Ͱ͋ͬͨɽ͔͠͠ͳ͕ΒɼεϚʔτϑΥϯ͕ී‫ٴ‬ ͨ͜͠ͱʹΑΓɼ֤ར༻ऀ͕ෳ਺ͷ IP ΞυϨεΛ࢖͏͜ͱ. ਤ 4. HINET Wi-Fi ϙελʔ. ʹͳͬͨ͜ͱɼϊʔτύιίϯͱҟͳΓεϚʔτϑΥϯ͸ ৗ࣌ి‫͕ݯ‬ೖ͓ͬͯΓΞΫηεϙΠϯτͷۙ͘ʹཱͪ‫ͬد‬. ౦஍۠Ͱ઀ଓͰ͖Δ SSID ͷϦετΛਤ 3 Ͱྫࣔ͢Δɽ. ͨ৔߹ʹࣗಈͰແઢ LAN ʹ઀ଓ͠ IP ΞυϨεΛ࢖͏৔. ར༻ՄೳͳΩϟϦΞ Wi-Fi ͷछྨͷֶ಺ߏ੒һ΁ͷप. ߹͕ଟ͍͜ͱɼͳͲ͔Β DHCP Ͱ෷͍ग़͞ΕΔ IP ΞυϨ. ஌͸ɼHINET Wi-Fi ͷϙελʔͷσβΠϯΛमਖ਼͠ɼϙ. ε਺͸೥ʑ૿Ճ͍ͯͬͨ͠ɽಛʹ‫ڞ‬༗εϖʔε͕ଟ͍౦޿. ελʔԼ෦ʹ֤ΩϟϦΞͷϩΰΛ‫ؚ‬ΊΔ͜ͱʹΑͬͯߦͬ. ౡ๺஍۠ʢSSID: HU-CUP10ʣͷ஍ҬͰ͸ɼDHCP Ͱ /24. ͍ͯΔʢਤ 4ʣ ɽϙελʔ͸ֶ֎ऀ༻઀ଓαʔϏεͷ EAP-. Ͱ IP ΞυϨεΛ෷͍ग़͍ͯͨ͠ͷʹର͠ɼDHCP ͷ෷͍. PEAP ༻ʹඞཁͳ‫ڞ‬༗ͷ ID ͓ΑͼύεϫʔυΛ‫ؚ‬Ί͓ͯ. ग़͠਺ͷϐʔΫ͕࿈೔ 200 Λ௒͑ΔͳͲɼԿΒ͔ͷରࡦ͕. ΓɼΞΫηεϙΠϯτΛઃஔ͍ͯ͠Δपลʹ͸ඞͣషΔ͜. ඞཁͳঢ়‫͍ͨͯͬͳʹگ‬ɽDHCP αʔόͷ IP ΞυϨεͷ. ͱʹ͍ͯ͠ΔͨΊɼͦͷप஌ͷޮՌ͸େ͖͍ͱߟ͑ΒΕΔɽ. Ϧʔε࣌ؒͷ୹ॖɼ෷͍ग़͢ IP ΞυϨεۭؒͷ֦ுʢ/24. ͳ͓ɼΩϟϦΞ Wi-Fi ͷ઀ଓํ๏ͷαϙʔτͳͲ͸ຊֶͷ. → /22ʣͳͲͰରࡦΛਐΊ͍͕ͯͨɼεϚʔτϑΥϯʹΑ. ૭‫Ͱޱ‬͸ड͚෇͚ͣɼͦΕͧΕͷࣄ‫ऀۀ‬ͷ૭‫ʹޱ‬໰͍߹Θ. ΔӨ‫ڹ‬Λܰ‫͖Ͱݮ‬ΔΩϟϦΞ Wi-Fi ͷઃஔʹ͍ͭͯ͸Ұͭ. ͤͯ΋Β͏ӡ༻ʹ͍ͯ͠Δɽ. ͷରࡦͱͯ͠‫ظ‬଴Λ࣋ͬͯड͚ೖΕΒΕͨɽ. 3.3 ಋೖ‫ޙ‬ͷঢ়‫گ‬ 3.2 ࣮‫ํݱ‬๏ ΩϟϦΞ Wi-Fi ͱͯ͠ͷ઀ଓ͸ɼਤ 2 ͷΑ͏ʹແઢ LAN. ΩϟϦΞ Wi-Fi ಋೖʹΑͬͯεϚʔτϑΥϯͷӨ‫͕ڹ‬ ܰ‫͞ݮ‬Ε͍ͯΔ͜ͱΛ֬ೝ͢ΔͨΊʹɼDHCP αʔό͔. ίϯτϩʔϥ͔Β HINET Wi-Fi ू໿εΠονʹંΓฦ. Βͷ IP ΞυϨεͷ෷͍ग़͠਺Λௐ΂ͨɽௐࠪ‫ؒظ‬͸ 2012. ͨ͠ࡍʹΩϟϦΞ Wi-Fi ༻ͷωοτϫʔΫ (DHCP αʔ. ೥ 4 ݄ 4 ೔͔Β 2013 ೥ 9 ݄ 30 ೔Ͱ 1 ࣌ؒຖʹ DHCP Ͱ. ό΍ radius αʔόΛ‫ؚ‬Ή) ͱ઀ଓͰ͖Δ VLAN ΛׂΓ౰. ͷ෷͍ग़͠ΞυϨε਺Λऔಘ͍ͯ͠Δɽਤ 5 ͸ར༻ऀ਺͕. ͯΔ͜ͱͰ࣮‫͍ͯ͠ݱ‬Δɽ2014 ೥ 6 ݄ 1 ೔‫ࡏݱ‬ɼΩϟϦ. ࠷΋ଟ͍౦޿ౡ๺஍۠ (HU-CUP10) ʹ͓͚Δ DHCP ͷ෷. Ξ Wi-Fi ͷ SSID ͸ au Wi-Fiʢ2012 ೥ 8 ݄ 10 ೔։௨ʣɼ. ͍ग़͠ΞυϨε਺Λ͍ࣔͯ͠ΔɽΩϟϦΞ Wi-Fi ಋೖલͷ. Wi2premium clubʢ2012 ೥ 8 ݄ 10 ೔։௨ʣɼ0001softbank. 2012 ೥લ‫( ظ‬4 ݄ʙ7 ݄) ͸ΞυϨε਺͕࿈೔ 200 Λ௒͑Δ. ʢ2012 ೥ 9 ݄ 28 ೔։௨ʣɼdocomoʢ2013 ೥ 2 ݄ 18 ೔։. Α͏ͳঢ়‫͕گ‬ଓ͍͍͕ͯͨɼՆ‫ٳق‬Ջதʢ8 ݄ɼ9 ݄ʣʹେ. ௨ʣ ɼNTT-SPOTʢ2013 ೥ 2 ݄ 25 ೔։௨ʣͷ 5 ͭͷ SSID. ൒ͷΩϟϦΞ Wi-Fi ͕ར༻Մೳʹͳͬͨ‫ޙ‬ɼ2012 ೥‫ظޙ‬. ΛϚϧν SSID ‫ػ‬ೳΛ༻͍ͯ‫Ͱ༻ڞ‬ఏ‫͍ͯ͠ڙ‬Δɽ౦޿ౡ. (10 ݄ʙ) ͷ෷͍ग़͠ΞυϨε਺͸ 50 ఔ౓‫ݮ‬গ͓ͯ͠Γɼ. ⓒ 2014 Information Processing Society of Japan. 4.

(5) Vol.2014-IOT-26 No.7 2014/6/28. ৘ใॲཧֶձ‫ڀݚ‬ใࠂ IPSJ SIG Technical Report. ϯϬϬ ϮϱϬ. ᩘ 䝇䝺ϮϬϬ 䝗䜰䛧ฟϭϱϬ 䛔ᡶ W ϭϬϬ , . ϱϬ Ϭ. ϭ Ϭ ͗ Ϭ Ϭ ͗Ϭ Ϭ Ͳ ϰ Ϭ ͬϰ ͬϬ Ϯ ϭ Ϭ Ϯ. ϭ Ϭ ͗ Ϭ Ϭ ͗ϱ ϭ Ͳ ϰ ϭ ͬϰ ͬϬ Ϯ ϭ Ϭ Ϯ. ϭ Ϭ ͗ Ϭ Ϭ ͗ϲ Ϭ Ͳ ϱ Ϯ ͬϰ ͬϬ Ϯ ϭ Ϭ Ϯ. ϭ Ϭ ͗ Ϭ Ϭ ͗ϭ Ϯ Ͳ ϱ Ϭ ͬϱ ͬϬ Ϯ ϭ Ϭ Ϯ. ϭ Ϭ ͗ Ϭ Ϭ ͗Ϯ ϭ Ͳ ϲ ϭ ͬϱ ͬϬ Ϯ ϭ Ϭ Ϯ. ϭ Ϭ ͗ Ϭ Ϭ ͗ϯ Ϭ Ͳϳ Ϯ ͬϱ ͬϬ Ϯ ϭ Ϭ Ϯ. ϭ Ϭ ͗ Ϭ Ϭ ͗ϴ ϭ Ͳ ϲ Ϭ ͬϲ ͬϬ Ϯ ϭ Ϭ Ϯ. ϭ Ϭ ͗ Ϭ Ϭ ͗ϵ Ϭ Ͳ ϳ ϭ ͬϲ ͬϬ Ϯ ϭ Ϭ Ϯ. ϭ Ϭ ͗ Ϭ Ϭ ͗Ϭ Ϭ Ͳ ϴ Ϯ ͬϲ ͬϬ Ϯ ϭ Ϭ Ϯ. ϭ Ϭ ͗ Ϭ Ϭ ͗ϱ ϭ Ͳ ϴ Ϭ ͬϳ ͬϬ Ϯ ϭ Ϭ Ϯ. ϭ Ϭ ͗ Ϭ Ϭ ͗ϲ Ϭ Ͳ ϵ ϭ ͬϳ ͬϬ Ϯ ϭ Ϭ Ϯ. ϭ Ϭ ͗ Ϭ Ϭ ͗ϭ Ϯ Ͳ ϵ Ϯ ͬϳ ͬϬ Ϯ ϭ Ϭ Ϯ. ϭ Ϭ ͗ Ϭ Ϭ ͗Ϯ ϭ Ͳ ϵ Ϭ ͬϴ ͬϬ Ϯ ϭ Ϭ Ϯ. ϭ Ϭ ͗ Ϭ Ϭ ͗ϯ Ϭ Ͳ Ϭ Ϯ ͬϴ ͬϬ Ϯ ϭ Ϭ Ϯ. ϭ Ϭ ͗ Ϭ Ϭ ͗ϴ ϭ Ͳ Ϭ ϯ ͬϴ ͬϬ Ϯ ϭ Ϭ Ϯ. ϭ Ϭ ͗ Ϭ Ϭ ͗ϵ Ϭ Ͳ Ϭ ϭ ͬϵ ͬϬ Ϯ ϭ Ϭ Ϯ. ϭ Ϭ ͗ Ϭ Ϭ ͗Ϭ Ϭ Ͳ ϭ Ϯ ͬϵ ͬϬ Ϯ ϭ Ϭ Ϯ. ϭ Ϭ ͗ Ϭ Ϭ ͗ϱ ϭ Ͳ ϭ Ϭ ͬϬ ͬϭ Ϯ ϭ Ϭ Ϯ. ϭ Ϭ ͗ Ϭ Ϭ ͗ϲ Ϭ Ͳ Ϯ ϭ ͬϬ ͬϭ Ϯ ϭ Ϭ Ϯ. ϭ Ϭ ͗ Ϭ Ϭ ͗ϭ Ϯ Ͳ Ϯ Ϯ ͬϬ ͬϭ Ϯ ϭ Ϭ Ϯ. ϭ Ϭ ͗ Ϭ Ϭ ͗Ϯ ϭ Ͳ Ϯ Ϭ ͬϭ ͬϭ Ϯ ϭ Ϭ Ϯ. ϭ Ϭ ͗ Ϭ Ϭ ͗ϯ Ϭ Ͳ ϯ ϭ ͬϭ ͬϭ Ϯ ϭ Ϭ Ϯ. ϭ Ϭ ͗ Ϭ Ϭ ͗ϴ ϭ Ͳ ϯ Ϯ ͬϭ ͬϭ Ϯ ϭ Ϭ Ϯ. ϭ Ϭ ͗ Ϭ Ϭ ͗ϵ Ϭ Ͳ ϰ Ϭ ͬϮ ͬϭ Ϯ ϭ Ϭ Ϯ. ϭ Ϭ ͗ Ϭ Ϭ ͗Ϭ Ϭ Ͳ ϱ ϭ ͬϮ ͬϭ Ϯ ϭ Ϭ Ϯ. ϭ Ϭ ͗ Ϭ Ϭ ͗ϱ ϭ Ͳ ϱ Ϯ ͬϮ ͬϭ Ϯ ϭ Ϭ Ϯ. ϭ Ϭ ͗ Ϭ Ϭ ͗ϲ Ϭ Ͳ ϱ Ϭ ͬϭ ͬϬ ϯ ϭ Ϭ Ϯ. ϭ ͗Ϭ Ϭ Ϭ ͗ ϭ Ϯ Ͳ ϱ ϭ ͬϭ ͬϬ ϯ ϭ Ϭ Ϯ. ㄪᰝ᪥᫬. ϭ ͗Ϭ Ϭ Ϭ ͗ ϯ Ϭ Ͳ ϲ Ϭ ͬϮ ͬϬ ϯ ϭ Ϭ Ϯ. ϭ ͗Ϭ Ϭ Ϭ ͗ Ϯ ϭ Ͳ ϲ Ϯ ͬϭ ͬϬ ϯ ϭ Ϭ Ϯ. ϭ ͗Ϭ Ϭ Ϭ ͗ ϴ ϭ Ͳ ϲ ϭ ͬϮ ͬϬ ϯ ϭ Ϭ Ϯ. ϭ ͗Ϭ Ϭ Ϭ ͗ ϵ Ϭ Ͳ ϳ Ϯ ͬϮ ͬϬ ϯ ϭ Ϭ Ϯ. ϭ ͗Ϭ Ϭ Ϭ ͗ Ϭ Ϭ Ͳ Ϭ ϭ ͬϯ ͬϬ ϯ ϭ Ϭ Ϯ. ϭ ͗Ϭ Ϭ Ϭ ͗ ϱ ϭ Ͳ Ϭ Ϯ ͬϯ ͬϬ ϯ ϭ Ϭ Ϯ. ϭ ͗Ϭ Ϭ Ϭ ͗ ϲ Ϭ Ͳ ϭ ϯ ͬϯ ͬϬ ϯ ϭ Ϭ Ϯ. ϭ ͗Ϭ Ϭ Ϭ ͗ ϭ Ϯ Ͳ Ϭ ϭ ͬϰ Ϭ ͬ ϯ ϭ Ϭ Ϯ. ϭ ͗Ϭ Ϭ Ϭ ͗ ϯ Ϭ Ͳ Ϯ Ϭ ͬϱ Ϭ ͬ ϯ ϭ Ϭ Ϯ. ϭ ͗Ϭ Ϭ Ϭ ͗ Ϯ ϭ Ͳ ϭ Ϯ ͬϰ Ϭ ͬ ϯ ϭ Ϭ Ϯ. ϭ ͗Ϭ Ϭ Ϭ ͗ ϴ ϭ Ͳ Ϯ ϭ ͬϱ Ϭ ͬ ϯ ϭ Ϭ Ϯ. ϭ ͗Ϭ Ϭ Ϭ ͗ ϵ Ϭ Ͳ ϯ Ϯ ͬϱ Ϭ ͬ ϯ ϭ Ϭ Ϯ. ϭ ͗Ϭ Ϭ Ϭ ͗ Ϭ Ϭ Ͳ ϯ Ϭ ͬϲ Ϭ ͬ ϯ ϭ Ϭ Ϯ. ϭ ͗Ϭ Ϭ Ϭ ͗ ϱ ϭ Ͳ ϯ ϭ ͬϲ Ϭ ͬ ϯ ϭ Ϭ Ϯ. ϭ ͗Ϭ Ϭ Ϭ ͗ ϲ Ϭ Ͳ ϰ Ϯ ͬϲ Ϭ ͬ ϯ ϭ Ϭ Ϯ. ϭ ͗Ϭ Ϭ Ϭ ͗ ϭ Ϯ Ͳ ϰ Ϭ ͬϳ Ϭ ͬ ϯ ϭ Ϭ Ϯ. ϭ ͗Ϭ Ϭ Ϭ ͗ Ϯ ϭ Ͳ ϱ ϭ ͬϳ Ϭ ͬ ϯ ϭ Ϭ Ϯ. ϭ ͗Ϭ Ϭ Ϭ ͗ ϯ Ϭ Ͳ ϲ Ϯ ͬϳ Ϭ ͬ ϯ ϭ Ϭ Ϯ. ϭ ͗Ϭ Ϭ ͗Ϭ ϴ ϭ Ͳ ϱ Ϭ ͬϴ Ϭ ͬ ϯ ϭ Ϭ Ϯ. ϭ ͗Ϭ Ϭ ͗Ϭ Ϭ Ϭ Ͳ ϳ Ϯ ͬϴ Ϭ ͬ ϯ ϭ Ϭ Ϯ. ϭ ͗Ϭ Ϭ ͗Ϭ ϵ Ϭ Ͳ ϲ ϭ ͬϴ Ϭ ͬ ϯ ϭ Ϭ Ϯ. ϭ ͗Ϭ Ϭ ͗Ϭ ϱ ϭ Ͳ ϲ Ϭ ͬϵ Ϭ ͬ ϯ ϭ Ϭ Ϯ. ϭ ͗Ϭ Ϭ ͗Ϭ ϲ Ϭ Ͳ ϳ ϭ ͬϵ Ϭ ͬ ϯ ϭ Ϭ Ϯ. ϭ ͗Ϭ Ϭ ͗Ϭ ϭ Ϯ Ͳ ϳ Ϯ ͬϵ Ϭ ͬ ϯ ϭ Ϭ Ϯ. ਤ 5 ౦޿ౡ๺஍۠ (HU-CUP10) ʹ͓͚Δ DHCP ͷ෷͍ग़͠ΞυϨε਺. ͦͷ‫ ޙ‬2013 ೥લ‫( ظ‬4 ݄ʙ7 ݄) Ͱ΋ಉఔ౓ͷਫ४ͰਪҠ. WLC-1. WLC-2. PI. ͍ͯ͠Δ͜ͱ͕Θ͔Δɽͳ͓ɼΩϟϦΞ Wi-Fi ͱ‫༻ڞ‬Λ࢝ Ίͨ‫ޙ‬ɼͦͷӨ‫ Ͱڹ‬HINET Wi-Fi ͷैདྷͷαʔϏε͕‫ܨ‬. ⿦⨨ 䠄䜽䝷䜲䜰䞁䝖䠅. L2 VPN. ͕Γʹ͘͘ͳͬͨͳͲͷۤ৘͸ฉ͖͍͑ͯͯ͜ͳ͍ɽ. ㄆド. (1) Web. 4. Մൖ‫ܕ‬ΞΫηεϙΠϯτͷಋೖ 4.1 ಋೖͷ‫ܦ‬Ң. 䝣䝻䜰䝇䜲䝑䝏 ᮾᗈᓥ䜻䝱䞁䝟䝇㞟⣙䝇䜲䝑䝏㞟⣙ 䝇䜲䝑䝏. AP. 2013 ೥౓ʹ HINET Wi-Fi ͸ΞΫηεϙΠϯτͷ୆਺. 䛻䜘䜛䝖䞁䝛䝸䞁䜾䛻䜘䜚⟶⌮⏝VLAN䛻AP䜢᥋⥆. ΛͦΕ·Ͱͷ໿ 200 ୆͔Β໿ 400 ୆΁૿Ճͤ͞Δ௥Ճ੔. (2) L2 VPN. උΛߦͬͨɽ௥Ճ੔උͷର৅͸‫༻ڞ‬εϖʔεͰΧόʔ཰͕ ௿͔ͬͨ‫ݐ‬෺ɼେ‫ن‬໛ͳϖʔύʔϨεձٞ΍ηϛφʔΛ։. ਤ 6. HINET Wi-Fi. 㞟⣙䝇䜲䝑䝏. ⟶⌮⏝VLAN. ⿦⨨ 䠄䝃䞊䝞䠅. L2 VPN. Մൖ‫ ܕ‬HINET Wi-Fi ΞΫηεϙΠϯτͷ઀ଓํ๏. ࠵͢Δ͜ͱ͕‫ظ‬଴Ͱ͖ΔҰ෦ͷձ͓ٞࣨΑͼߨٛࣨͰ͋ͬ ͨɽ͔͠͠ͳ͕Βɼ୆਺ͷ੍‫ʹݶ‬ΑΓશͯͷձٞࣨɾߨٛ. ωοτϫʔΫΛ WiMAX ʹͨ͠Մൖ‫ܕ‬ΞΫηεϙΠϯτ. ࣨΛΧόʔ͢Δ͜ͱ͸ࠔ೉Ͱ͋Γɼґવͱͯ͠੔උͷཁ๬. ͷି͠ग़͠ηοτΛ࡞੒͠ɼ༗ઢ LAN ͷ੔උ͕ࠔ೉ͳ৔. ͕͋Δ෦԰͸࢒͍ͬͯΔɽ. ॴͰͷར༻΋αϙʔτ͍ͯ͠ΔɽຊߘͷՄൖ‫ܕ‬ΞΫηεϙ. ཁ๬͕͋ͬͨΞΫηεϙΠϯτͷઃஔͷ໨తͷҰͭͱ͠. Πϯτ͸্ྲྀͷωοτϫʔΫ͸༗ઢ LAN Λ૝ఆ͍ͯ͠Δ. ͯɼ୹‫Ͱظ‬དྷ๚͍ͯ͠Δֶ֎ऀΛूΊͯηϛφʔ΍࡞‫ۀ‬Λ. ͕ɼͦͷ༗ઢϙʔτ͸ Web ೝূΛཁ‫͞ٻ‬Εɼ͔ͭ HINET. ͢Δ৔߹΍খ‫ن‬໛ͳֶձ΍ߨԋձͳͲͷΠϕϯτ༻ͷແ. Wi-Fi ͷ؅ཧ༻ VLAN Ͱ͸ͳ͍Ϣʔβ͕ීஈ࢖͍ͬͯΔ. ઢ LAN ‫ڥ؀‬ͷఏ‫Ͳͳڙ‬ɼεϙοτͰ࢖͏৔߹͕‫͛ڍ‬ΒΕ. ωοτϫʔΫͰ͋Δ͜ͱΛલఏͱͯ͠ߏங͍ͯ͠Δɽ. Δɽ͜ͷछྨͷར༻ͷधཁ͸ଟ͍ͱ൑அͨͨ͠ΊɼҰ࣌త ʹ HINET Wi-Fi ͱಉ༷ͷ‫ڥ؀‬ͷఏ‫ڙ‬ʢeduroam Λ‫ؚ‬Ήή. 4.2 ࣮‫ํݱ‬๏. ετ༻ͷ SSID ΍ΞΫηε੍‫ޚ‬ͷఏ‫ڙ‬ʣ͕Ͱ͖ΔՄൖ‫ܕ‬Ξ. Մൖ‫ܕ‬ΞΫηεϙΠϯτΛֶ಺ͷ೚ҙͷ৔ॴͰར༻Մೳ. ΫηεϙΠϯτΛ௥Ճ੔උͷҰ෦ͱͯ͠ 10 ηοτಋೖ͠. ʹ͢ΔͨΊʹ͸ɼ1) ར༻ऀೝূ (Web ೝূ) Λ࣮ߦͰ͖Δɼ. ͨɽՄൖ‫ܕ‬ΞΫηεϙΠϯτ͸؅ཧऀଆͷࢹ఺͔Β΋ɼΞ. 2) HINET Wi-Fi ͷ؅ཧ༻ VLAN ʹΞΫηεϙΠϯτΛ. ΫηεϙΠϯτ‫ނ‬ো࣌ͷҰ࣌తͳ෮‫چ‬ͷखஈͱͯ͠ར༻͢. ઀ଓͰ͖Δɼ͜ͱ͕ཁ‫͞ٻ‬ΕΔɽͦ͜Ͱɼզʑ͸ਤ 6 ͷߏ. Δ͜ͱɼ‫ݻ‬ఆ‫ܕ‬ͷΞΫηεϙΠϯτΛઃஔ͢Δࡍʹࣄલʹ. ੒ͰՄൖ‫ܕ‬ΞΫηεϙΠϯτ͕ HINET Wi-Fi ͷҰ෦ͱ͠. ઃஔ৔ॴ΍ઃஔ୆਺Λ‫ݕ‬౼͢Δͱ͖ͷςετͰར༻͢Δ͜. ͯ઀ଓͰ͖ΔΑ͏ʹ͍ͯ͠Δɽද 3 ͸Մൖ‫ܕ‬ΞΫηεϙΠ. ͱͳͲͰ໾ཱͭ͜ͱ͕‫ظ‬଴͞ΕΔɽ. ϯτΛ઀ଓ͢ΔͨΊʹಋೖͨ͠‫͋Ͱثػ‬Δɽ. L2 VPN ૷ஔʢαʔόʣͷ্ྲྀΛ HINET Wi-Fi ͷ؅ཧ. ଞେֶͷՄൖ‫ܕ‬ΞΫηεϙΠϯτͷಋೖࣄྫͱͯ͠੨ ࢁֶӃେֶͷࣄྫ [9] ͕‫͛ڍ‬ΒΕΔɽ͜ͷจ‫Ͱݙ‬͸্ྲྀͷ. ༻ VLAN ʹ͠ɼԼྲྀΛϢʔβ͕ීஈ࢖͍ͬͯΔωοτϫʔ *4. ⓒ 2014 Information Processing Society of Japan. http://www.mrl.co.jp/product/ugg05/index.html. 5.

(6) Vol.2014-IOT-26 No.7 2014/6/28. ৘ใॲཧֶձ‫ڀݚ‬ใࠂ IPSJ SIG Technical Report ද 3 Մൖ‫ܕ‬ΞΫηεϙΠϯτ༻ͷ‫ثػ‬ ‫໊ثػ‬শ. ࢓༷. ୆਺. 1005*4. L2 VPN ૷ஔʢαʔόʣ. UnifiedGate. L2 VPN ૷ஔʢΫϥΠΞϯτʣ. UnifiedGate 404*4. 1 10. ਤ 8 Մൖ‫ܕ‬ΞΫηεϙΠϯτؔ࿈‫ثػ‬ͷ઀ଓํ๏. Ͱͷି͠ग़͠‫ؒظ‬ͷ্‫ݶ‬͸ 1 ϲ݄ͱͳ͍ͬͯΔɽି͠ग़͠ ৔ॴ͸޿ౡେֶ৘ใϝσΟΞ‫ڭ‬ҭ‫ڀݚ‬ηϯλʔʢҎ‫ޙ‬ɼϝ σΟΞηϯλʔʣͷ֤૭‫ޱ‬ʢຊ‫ؗ‬ɼ੢෼ࣨɼբ෼ࣨʣͰड ਤ 7 Մൖ‫ܕ‬ΞΫηεϙΠϯτି͠ग़͠༻όοά. ͚෇͚͍ͯΔɽͳ͓ɼ֤ L2 VPN ૷ஔʢΫϥΠΞϯτʣʹ ͸ϝσΟΞηϯλʔͰऔಘͨ͠ήετΞΧ΢ϯτͱύε. Ϋ͔ΒΞΫηεͰ͖Δ VLAN (ֶ಺֎͔Β઀ଓՄೳͳ IP. ϫʔυΛઃఆ͠ɼ΋͠Մൖ‫ܕ‬ΞΫηεϙΠϯτҰࣜΛฆࣦ. ΞυϨε) ʹઃఆ͢ΔɽL2 VPN ૷ஔʢΫϥΠΞϯτʣ͸. ͨ͠৔߹͸ήετΞΧ΢ϯτͷύεϫʔυͷมߋ͓Αͼ L2. HINET2007 ͷϑϩΞεΠονʹ Web ೝূΛ࣮ߦ͠ɼͦͷ. VPN ૷ஔؒͷ secret ͷมߋʹΑͬͯෆਖ਼ར༻Λ๷͙ӡ༻. ‫ ޙ‬L2 VPN ૷ஔʢαʔόʣͱͷؒͰ L2 VPN ʹΑΔτϯ. ʹ͍ͯ͠Δɽ. ωϦϯάΛߦ͍ɼ઀ଓ͞ΕͨΞΫηεϙΠϯτΛ HINET. Wi-Fi ͷ؅ཧ༻ VLAN ʹ઀ଓͤ͞Δɽͳ͓ɼL2 VPN ૷. 4.4 ಋೖ‫ޙ‬ͷঢ়‫گ‬. ஔʢΫϥΠΞϯτʣ͕ΩϟϯύεωοτϫʔΫʹ઀ଓ͢Δ. ·ͩे෼ͳ޿ใ͕ग़དྷ͍ͯͳ͍͜ͱ΍αʔϏεΛ։࢝͠. ࡍ Web ೝূΛ‫ٻ‬ΊΒΕΔͨΊɼ૷ஔʹอଘͨ͠ ID ͱύε. ͯؒ΋ͳ͍ͨΊɼ2014 ೥ 6 ݄ 1 ೔‫Ͱࡏݱ‬͸਺݅ఔ౓ͷି͠. ϫʔυʹΑͬͯ઀ଓ࣌ʹࣗಈͰ Web ೝূΛ࣮ߦ͢Δ‫ػ‬ೳ. ग़͠਺ʹཹ·͍ͬͯΔɽར༻ऀ͔Β઀ଓํ๏ʹؔ͢Δ࣭໰. Λ௥Ճͨ͠ɽ. ͳͲ͸ฉ͖͍͑ͯͯ͜ͳ͍ɽ. L2 VPN ૷ஔʢαʔόʣ΁ֶ֎͔ΒͷΞΫηεΛೝΊͯ ͍ΔͨΊɼL2 VPN ૷ஔʢΫϥΠΞϯτʣͷ Web ೝূ‫ػ‬ೳ. 5. ·ͱΊ. ΛΦϑʹ͢Δઃఆʹ্ͨ͠Ͱ֎ग़ઌͳͲͰ HINET Wi-Fi. ຊߘͰ͸ɼ޿ౡେֶͷΩϟϯύεແઢ LAN Ͱ͋Δ HINET. ͷΞΫηεϙΠϯτΛಈ࡞ͤ͞Δ͜ͱ΋ՄೳͰ͋Δɽ͜Ε. Wi-Fi ʹ͍ͭͯ֓આ͠ɼಛʹ࠷ۙ։࢝ͨ͠ΩϟϦΞ Wi-Fi. ͸ɼྫ͑͹ϗςϧͳͲֶ֎ͰֶձΛ։࠵͢Δ৔߹ͳͲʹແ. ͱͷ‫ڞ‬ಉར༻ͱՄൖ‫ܕ‬ΞΫηεϙΠϯτͷಋೖʹ͍ͭͯɼ. ઢ LAN ‫ڥ؀‬Λఏ‫͢ڙ‬Δ৔߹ͳͲʹར༻Ͱ͖Δɽ. ಋೖ‫ܦ‬Ң͓Αͼ࣮‫ํݱ‬๏ɾӡ༻ʹ͍ͭͯ঺հͨ͠ɽ͜ΕΒ ͷຊֶͷࣄྫ͕͜Ε͔Β৽‫ʹن‬ಉ༷ͷແઢ LAN ͷαʔϏ. 4.3 ӡ༻ମ੍. εΛ։࢝͢Δ૊৫ʹରͯ͠‫ݕ‬౼ͷҰॿʹͳΕ͹޾͍Ͱ͋Δɽ. ޿ౡେֶͰ͸ɼ2014 ೥ 5 ݄ 1 ೔ΑΓՄൖ‫ܕ‬ΞΫηεϙΠ. ຊߘͰड़΂ͨՄൖ‫ܕ‬ΞΫηεϙΠϯτͷି͠ग़͠αʔϏ. ϯτͷି͠ग़͠αʔϏεΛ։͍࢝ͯ͠Δ *5 ɽି͠ग़͢όο. ε͸࢝·ͬͨ͹͔ΓͰ͋Γɼ໰୊఺ͷચ͍ग़͠΍վળ఺ͷ. άͷதʹ͸ L2 VPN ૷ஔʢΫϥΠΞϯτʣɼΞΫηεϙΠ. ߟ࡯ʹ͍ͭͯ͸ࠓ‫ޙ‬ͷӡ༻Λ௨ͯ͠ߦ͏͜ͱͱ͢Δɽಛʹ. ϯτɼPoE ‫ిڅ‬ΞμϓλɼLAN έʔϒϧɼ઀ଓ༻આ໌ॻͳ. ି͠ग़͠αʔϏε͕֦େͨ͠৔߹ʹ͸ɼωοτϫʔΫ‫ثػ‬. Ͳ઀ଓʹඞཁͳ΋ͷ͕શͯೖ͍ͬͯΔʢਤ 7ʣ ɽར༻ऀ͸આ. ͷѻ͍ʹෆ‫׳‬Εͳར༻ऀ΁΋ରԠ͢Δ͜ͱ΋ߟ͍͔͑ͯͳ. ໌ॻʹैͬͯਤ 8 ͷΑ͏ʹ഑ઢΛ͠ɼHINET2007 ͷϑϩ. ͚Ε͹ͳΒͳ͍ɽ۩ମతʹ͸ɼି͠ग़͠༻ͷόοάͷதͰ. ΞεΠονͷϙʔτʹ L2 VPN ૷ஔʢΫϥΠΞϯτʣͷ্. ඞཁͳ഑ઢΛશͯͨ͠ঢ়ଶΛ࡞͓͖ͬͯɼར༻ऀ͸όοά. ྲྀଆͷ LAN έʔϒϧΛ઀ଓ͢Δ͜ͱͰ HINET Wi-Fi ͕. Λ޿্͛ͯྲྀͷ LAN ഑ઢͷ઀ଓͱి‫ݯ‬λοϓͷίϯηϯ. ఏ‫ڙ‬ՄೳͱͳΔɽͳ͓ɼ‫Ͱ఺࣌ݱ‬͸ି͠ग़͠͸ֶ಺Ͱͷར. τ΁ͷ઀ଓͷ 2 ͭͷಈ࡞͚ͩͰར༻ՄೳͱͳΔΑ͏ͳखܰ. ༻͚ͩʹ‫ݶ‬ఆ͍ͯ͠Δɽ. ͳߏ੒Λ‫ݕ‬౼͍ͨ͠ɽ. Մൖ‫ܕ‬ΞΫηεϙΠϯτͷି͠ग़͠ʹ͸ࢯ໊΍ར༻৔ॴ. ँࣙ. HINET Wi-Fi ͷߏங͓Αͼӡ༻ʹਚྗ௖͍͍ͯ. Λ‫ͨ͠ࡌه‬ਃ੥ॻͷఏग़͕ඞཁͰ͋Γɼ‫ࡏݱ‬ͷ 1 ճͷਃ੥. Δ޿ౡେֶ৘ใϝσΟΞ‫ڭ‬ҭ‫ڀݚ‬ηϯλʔɼ޿ౡେֶֶज़ɾ. *5. ࣾձ࢈ֶ࿈‫ࣨܞ‬৘ใԽਪਐάϧʔϓͷؔ܎ऀɼ͓Αͼ޿ౡ. http://www.media.hiroshima-u.ac.jp/news/2014042501. ⓒ 2014 Information Processing Society of Japan. 6.

(7) ৘ใॲཧֶձ‫ڀݚ‬ใࠂ IPSJ SIG Technical Report. Vol.2014-IOT-26 No.7 2014/6/28. େֶֶज़ɾࣾձ࢈ֶ࿈‫޿ࣨܞ‬ใάϧʔϓࡾ‫ཬށ‬ඒओࠪʹ‫ײ‬ ँͷҙΛࣔ͢ɽ ࢀߟจ‫ݙ‬ [1]. [2]. [3]. [4]. [5]. [6]. [7] [8]. [9]. ૬‫ྰݪ‬ೋɼ੢ଜߒೋɼ‫؛‬৔ਗ਼‫ޛ‬ɼాౡߒҰɼۙಊపɿ“ ར༻ऀೝূ‫ػ‬ೳΛ࣋ͭେ‫ن‬໛ΩϟϯύεωοτϫʔΫ ͷߏங”, 2008 ೥ిࢠ৘ใ௨৴ֶձ૯߹େձɼBS-8-7ɼ pp.S-116–S-117ɼ2008 ೥ 3 ݄ɽ ૬‫ྰݪ‬ೋɼ੢ଜߒೋɼۙಊపɼ‫؛‬৔ਗ਼‫ޛ‬ɼాౡߒҰɿ“શ‫ڭ‬ һʹ‫ݸ‬ผϑΝΠΞ΢Υʔϧ‫ػ‬ೳΛఏ‫͢ڙ‬ΔΩϟϯύεωο τϫʔΫͷߏங”, ৘ใॲཧֶձ‫ڀݚ‬ใࠂɼIOTɼvol.2008ɼ no.72ɼpp.29–34ɼ2008 ೥ 7 ݄ɽ ޿ౡେֶ: “ΩϟϯύεɾϢϏΩλεɾϓϩδΣΫτͷ‫׆‬ಈใ ࠂʹ͍ͭͯ”ɼ2011 ೥ 11 ݄ɼhttp://www.hiroshima-u. ac.jp/top/intro/jyoho-ka/edu/CUP/ ੢ଜߒೋɼळ੒ल‫ل‬ɼ໺ଜՅ༸ɼ૬‫ྰݪ‬ೋɿ“ԕִ‫ޚ੍ثػ‬ ϓϩτίϧΛ༻͍ͨ༗ઢ/ແઢ LAN ༻৘ใίϯηϯτγ εςϜ”, ৘ใॲཧֶձ࿦จࢽɼvol.43ɼno.2ɼpp.662–670ɼ 2002 ೥ 2 ݄ɽ ౻ଜ‫ڤ‬णɼాౡߒҰɼେ౦ढ़തɼ੢ଜߒೋɼ૬‫ྰݪ‬ೋɿ “େ‫ن‬໛ΩϟϯύεωοτϫʔΫ HINET2007 ΁ͷγϯ άϧαΠϯΦϯ‫ػ‬ೳͷ࣮૷͓ΑͼධՁ”, Πϯλʔωοτ ͱӡ༻ٕज़γϯϙδ΢Ϝ 2010 ࿦จूɼvol.2010ɼno.14ɼ pp.111–118ɼ2010 ೥ 12 ݄ɽ ౻ଜ‫ڤ‬णɼ੢ଜߒೋɼۙಊపɼେ౦ढ़തɼాౡߒҰɼ૬ ‫ྰݪ‬ೋɿ“εΠονϕʔεͷೝূωοτϫʔΫ΁ͷγϯά ϧαΠϯΦϯ‫ػ‬ೳͷ࣮૷ͱධՁ”, ৘ใॲཧֶձ࿦จࢽɼ vol.53ɼno.3ɼpp.958–968ɼ2012 ೥ 3 ݄ɽ eduroam JP, http://www.eduroam.jp/ ແઢ LAN Ϗδωε‫ڀݚ‬ձɿ“ແઢ LAN Ϗδωε‫ڀݚ‬ձใࠂ ॻʢҊʣ”ɼ૯຿লແઢ LAN Ϗδωε‫ڀݚ‬ձୈ 7 ճձ߹഑෍ ࢿྉɼࢿྉ 7-1ɼ2012 ೥ 7 ݄ɼhttp://www.soumu.go.jp/ main_sosiki/kenkyu/lan/02kiban04_03000092.html ࡾౡ࿨޺ɼࡔా఩ਓɼ‫ٶ‬઒༟೭ɿ“ϙʔλϒϧ WiMAX ϧʔ λΛ༻͍ͨՄൖ‫ܕ‬Ϛωʔδυແઢ LAN γεςϜͷߏங”, ৘ใॲཧֶձ‫ڀݚ‬ใࠂɼIOTɼvol.2013ɼno.4ɼpp.1–5ɼ 2013 ೥ 7 ݄ɽ. ⓒ 2014 Information Processing Society of Japan. 7.

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