{"id":360,"date":"2023-12-07T03:12:42","date_gmt":"2023-12-07T00:12:42","guid":{"rendered":"https:\/\/sms-txt.net\/?p=360"},"modified":"2024-09-05T12:44:42","modified_gmt":"2024-09-05T09:44:42","slug":"ss7-kone-pealtkuulamine","status":"publish","type":"post","link":"https:\/\/sms-txt.net\/et\/kone-pealtkuulamine\/ss7-kone-pealtkuulamine\/","title":{"rendered":"SS7 k\u00f5ne pealtkuulamine"},"content":{"rendered":"<p>Mobiilsidekeskuse MSC valduses on tavaliselt kr\u00fcpteerimisv\u00f5tmed, mida iga abonent kasutab k\u00f5ne loomiseks. Kui abonent on liikvel, h\u00f5lbustab \u00fcleandmisprotsess abonendi sujuvat \u00fcleminekut erinevate raadioradioelementide vahel, s\u00e4ilitades samal ajal k\u00f5ne kulgemise.<\/p>\n<p>M\u00f5nel juhul liigub abonent \u00fchest rakust teise, mida haldab teine VLR. Sellisel juhul ei ole uuel VLRil algselt autentimisandmeid, mis h\u00f5lbustaksid k\u00f5ne s\u00e4ilitamist, mist\u00f5ttu on vaja MSC-de vahelist \u00fcleandmisprotsessi v\u00f5tmete \u00fcleandmiseks uuele MSC-le.<\/p>\n<p>Seda tehakse MAP-s\u00f5numi sendIdentification kaudu. Uus VLR saadab sendIdentification-teate vanale VLRile, mis omakorda vastab k\u00e4imasoleva k\u00f5ne s\u00e4ilitamiseks vajalike v\u00f5tmetega.  Nende v\u00f5tmete hulgas on ka v\u00f5ti, mida kasutatakse \u00f5hu kaudu toimuva liikluse kr\u00fcpteerimiseks. R\u00fcndestsenaariumis h\u00f5ivab r\u00fcndaja sihtm\u00e4rgi liikluse \u00f5huliidese kaudu (eeldades sihtm\u00e4rgi f\u00fc\u00fcsilist l\u00e4hedust).<\/p>\n<p>Juurdep\u00e4\u00e4suga SS7-le saab ta seej\u00e4rel kasutada sendIdentification-s\u00f5numit, et saada sihtm\u00e4rgi dekr\u00fcpteerimisv\u00f5tmed ja kasutada neid liikluse dekr\u00fcpteerimiseks. sendIdentification on vajalik ainult sisev\u00f5rgu piires, kui<br \/>\n\u00fcleandmine. Seda ei tohiks kasutada \u00f5igusp\u00e4raselt v\u00e4ljastpoolt ja seega tuleks see piiril filtreerida.<\/p>\n<h2>V\u00e4ljaminevate k\u00f5nede pealtkuulamine<\/h2>\n<p>GSM Service Control Function (gsmSCF) on funktsionaalne \u00fcksus, mis sisaldab CAMEL-teenuse loogikat, mis otsustab teatud s\u00fcndmuste puhul kindlalt, kas soovitud tegevus v\u00f5ib j\u00e4tkuda muudetud, muutmata v\u00f5i katkestatud kujul. Seda saab kasutada n\u00e4iteks v\u00e4ljaminevate numbrite muutmiseks, et lisada piirkonnakood v\u00f5i rahvusvaheline formaat.<\/p>\n<p>R\u00fcndaja, kellel on juurdep\u00e4\u00e4s SS7-le, v\u00f5ib kasutada insertSubscriberData-teadet, et muuta abonendi gsmSCF-aadressi enda kontrolli all olevaks aadressiks. R\u00fcndaja saab seej\u00e4rel \u00fcmber kirjutada v\u00e4ljaminevaid numbreid tema kontrolli all olevaks numbriks. Sellisel juhul v\u00f5tab r\u00fcndaja vastu v\u00e4ljamineva k\u00f5ne, salvestab k\u00f5ne enne selle edastamist l\u00f5ppsihtkohta.<\/p>\n<h2>Pealtkuulamine - sissetulev liiklus - K\u00f5ne edastamine<\/h2>\n<p>S\u00f5numit registerSS kasutatakse abonendile lisateenuste registreerimiseks. \u00dcks neist teenustest on k\u00f5ne edastamise teenus. R\u00fcndaja v\u00f5ib kasutada registerSS-teadet, et v\u00f5imaldada k\u00f5ne edastamist tema kontrolli all olevale numbrile. K\u00f5ne vastuv\u00f5tmisel kasutab r\u00fcndaja seej\u00e4rel s\u00f5numit eraseSS, et eemaldada k\u00f5ne suunamine ja suunata k\u00f5ne tagasi tellijale. Sel viisil saab r\u00fcndaja k\u00f5ne pealtkuulata ja salvestada.<\/p>","protected":false},"excerpt":{"rendered":"<p>Mobiilsidekeskuse MSC valduses on tavaliselt kr\u00fcpteerimisv\u00f5tmed, mida iga abonent kasutab k\u00f5ne loomiseks. Kui abonent on liikvel, h\u00f5lbustab \u00fcleandmisprotsess abonendi sujuvat \u00fcleminekut erinevate raadioradioelementide vahel, s\u00e4ilitades samal ajal k\u00f5ne kulgemise. M\u00f5nel juhul liigub tellija...<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[68],"tags":[],"class_list":["post-360","post","type-post","status-publish","format-standard","hentry","category-call-interception"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.7 (Yoast SEO v26.7) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>SS7 Call Interception<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/sms-txt.net\/et\/kone-pealtkuulamine\/ss7-kone-pealtkuulamine\/\" \/>\n<meta property=\"og:locale\" content=\"et_EE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"SS7 Call Interception\" \/>\n<meta property=\"og:description\" content=\"The mobile switching center MSC normally holds the encryption keys used by each subscriber to be able to establish the call. 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