{"id":38707,"date":"2019-10-31T22:25:26","date_gmt":"2019-10-31T19:25:26","guid":{"rendered":"https:\/\/prohoster.info\/blog\/varianty-ispolzovaniya-reshenij-dlya-vidimosti-seti-network-visibility\/"},"modified":"2019-10-31T22:25:26","modified_gmt":"2019-10-31T19:25:26","slug":"varianty-ispolzovaniya-reshenij-dlya-vidimosti-seti-network-visibility","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/administrirovanie\/varianty-ispolzovaniya-reshenij-dlya-vidimosti-seti-network-visibility","title":{"rendered":"V\u00f5imalused v\u00f5rgu n\u00e4htavuse lahenduste kasutamiseks","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<h3>V\u00f5rgun\u00e4gemise lahenduste kasutusv\u00f5imalused<\/h3>\n<p><\/p>\n<h4>Mis on v\u00f5rgun\u00e4gemine?<\/h4>\n<p>\nV\u00f5rgun\u00e4gemine m\u00e4\u00e4ratletakse Websteri s\u00f5naraamatu j\u00e4rgi kui \"v\u00f5ime olla kergesti m\u00e4rgatud\" v\u00f5i \"selguse aste\". V\u00f5rgun\u00e4gemise v\u00f5i rakenduse all m\u00f5istetakse pimedate punktide k\u00f5rvaldamist, mis varjavad v\u00f5imalust h\u00f5lpsasti n\u00e4ha (v\u00f5i kvantitatiivselt m\u00e4\u00e4rata), mis toimub veebis ja\/v\u00f5i rakendustes. See n\u00e4htavus v\u00f5imaldab IT-meeskondadel kiiresti eristada turvaohtusid ja lahendada j\u00f5udlusprobleeme, mis tagab parima v\u00f5imaliku l\u00f5ppkasutajakogemuse.<\/p>\n<p>Teine arusaam on see, et see v\u00f5imaldab IT-meeskondadel kontrollida ja optimeerida v\u00f5rku koos rakenduste ja IT-teenustega. Seet\u00f5ttu on v\u00f5rgun\u00e4gemine, rakenduste ja turvalisuse j\u00e4lgimine h\u00e4davajalik igasuguste IT-organisatsioonide jaoks. <\/p>\n<p>K\u00f5ige lihtsam viis v\u00f5rgu n\u00e4htavuse saavutamiseks on rakendada n\u00e4htavuse arhitektuuri, mis on terviklik end-to-end infrastruktuur, tagades samal ajal f\u00fc\u00fcsilise ja virtuaalse v\u00f5rgu, rakenduste ja turvalisuse n\u00e4htavuse.<\/p>\n<h4>V\u00f5rgu n\u00e4htavuse aluse ladumine<\/h4>\n<p>\nKui n\u00e4htavuse arhitektuur on loodud, on saadaval mitmeid kasutusv\u00f5imalusi. Nagu allpool n\u00e4ha, esindab n\u00e4htavuse arhitektuur kolme peamist n\u00e4htavuse taset: juurdep\u00e4\u00e4su tase, haldustase ja j\u00e4lgimistase.<\/p>\n<p><img decoding=\"async\" alt=\"V\u00f5imalused v\u00f5rgu n\u00e4htavuse lahenduste kasutamiseks\" src=\"\/wp-content\/uploads\/2019\/10\/688f7f241258a3654ffefcd01980c8c0.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><br \/>\nKasutades n\u00e4idatud elemente, saavad IT-spetsialistid lahendada erinevaid v\u00f5rgu ja rakenduste probleeme. Olemas on kaks kasutusv\u00f5imaluste kategooriat:<\/p>\n<ul>\n<li>P\u00f5hilised n\u00e4htavuse lahendused<\/li>\n<li>T\u00e4ielik v\u00f5rgu n\u00e4htavus<\/li>\n<\/ul>\n<p>\nP\u00f5hilised n\u00e4htavuse lahendused on suunatud v\u00f5rgu turvalisusele, kulude s\u00e4\u00e4stmisele ja t\u00f5rgete k\u00f5rvaldamisele. Need kolm kriteeriumi m\u00f5jutavad IT-d iga kuu, kui mitte iga p\u00e4ev. T\u00e4ielik v\u00f5rgu n\u00e4htavus on m\u00f5eldud, et tagada s\u00fcgavam arusaam pimedate tsoonide, j\u00f5udluse ja regulatiivsete n\u00f5uete valdkondadest.<\/p>\n<h4>Mida saab t\u00f5eliselt teha v\u00f5rgu n\u00e4htavusega?<\/h4>\n<p>\nOn kuus erinevat v\u00f5rgu n\u00e4htavuse kasutusjuhtu, mis n\u00e4itavad selgelt selle v\u00e4\u00e4rtust. Need on:<\/p>\n<p> \u2014 V\u00f5rgu turvalisuse parendamine<br \/>\n \u2014 V\u00f5imaluste pakkumine piiramiseks ja kulude v\u00e4hendamiseks<br \/>\n \u2014 T\u00f5rgete kiire lahendamine ja v\u00f5rgu usaldusv\u00e4\u00e4rsuse t\u00f5stmine<br \/>\n \u2014 V\u00f5rgu pimealade k\u00f5rvaldamine<br \/>\n \u2014 V\u00f5rgu ja rakenduste j\u00f5udluse optimeerimine<br \/>\n \u2014 Vastavuse tugevdamine regulatiivsetele n\u00f5uetele<\/p>\n<p>Allpool on m\u00f5ned konkreetsed kasutusn\u00e4ited.<\/p>\n<p><b>N\u00e4ide nr 1 \u2013 andmete filtreerimine turvelahendustele, mis asuvad v\u00f5rgu vahepeal (in-line), t\u00f5stab nende lahenduste efektiivsust.<\/b><\/p>\n<p>Selle variandi eesm\u00e4rk on kasutada v\u00f5rgu paketibrokereid (NPB \u2013 Network Packet Broker) madala riskiga andmete filtreerimiseks (nt video ja h\u00e4\u00e4l), et need v\u00e4listada turvameetmete kontrollist (sissetungi ennetamise s\u00fcsteemist (IPS), andmete kadumise ennetamisest (DLP), veebi rakenduste tulem\u00fc\u00fcrist (WAF) jne). Seda \"mittehuvitavat\" liiklust saab tuvastada ja suunata tagasi \u00fcmberminekuelementi (by-pass switch) ning edastada edasi v\u00f5rku. Selle lahenduse eeliseks on, et WAF v\u00f5i IPS ei pea kulutama protsessoriv\u00f5imet (CPU) tarbetute andmete anal\u00fc\u00fcsimiseks. Kui teie v\u00f5rgu liiklus sisaldab m\u00e4rkimisv\u00e4\u00e4rses mahus sellist t\u00fc\u00fcpi andmeid, v\u00f5ite selle funktsiooni rakendada ning v\u00e4hendada koormust oma turvavahenditele.<\/p>\n<p><img decoding=\"async\" alt=\"V\u00f5imalused v\u00f5rgu n\u00e4htavuse lahenduste kasutamiseks\" src=\"\/wp-content\/uploads\/2019\/10\/6679183b3a96f85ed70301ed431a05fe.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nEttev\u00f5tetel on juhtumeid, kus kuni 35% madala riskitasemega v\u00f5rguliiklusest on IPS-i kontrolletusest v\u00e4lja j\u00e4etud. See suurendab automaatselt IPS-i t\u00f5husat ribalaiust 35% ja t\u00e4hendab, et saate edasi l\u00fckata t\u00e4iendavate IPS-ide ostmise v\u00f5i uuendamise. Me k\u00f5ik teame, et v\u00f5rguliiklus kasvab, seega tuleb mingil hetkel teil vajada tootlikumat IPS-i. K\u00fcsimus on t\u00f5eliselt selles, kas soovite kulusid minimeerida v\u00f5i mitte.<\/p>\n<p><b>N\u00e4ide nr 2 \u2013 koormuse tasakaalustamine pikendab 1-10Gbit\/s seadmete eluiga 40Gbit\/s v\u00f5rgus<\/b><\/p>\n<p>Teine n\u00e4ide kasutusest h\u00f5lmab v\u00f5rgu infrastruktuuri omamise kulude v\u00e4hendamist. See saavutatakse paketivenitajate (NPB) abil, et suunata liiklust turbe- ja j\u00e4lgimist\u00f6\u00f6riistadele. Kuidas koormuse tasakaalustamine v\u00f5ib enamikule ettev\u00f5tetele kasulik olla? Esiteks on v\u00f5rgu liikluse suurenemine v\u00e4ga levinud n\u00e4htus. Aga kuidas j\u00e4lgida suure l\u00e4bilaskev\u00f5ime kasvu m\u00f5ju? N\u00e4iteks, kui uuendate oma v\u00f5rgu tuuma 1 Gbit\/s-lt 10 Gbit\/s-le, siis vajate t\u00f6\u00f6riistu 10 Gbit\/s-i jaoks, et \u00f5iget j\u00e4lgimist teha. Kui suurendate kiirust 40 Gbit\/s v\u00f5i 100 Gbit\/s-ni, on selliste kiirusetega j\u00e4lgimist\u00f6\u00f6riistade valik palju v\u00e4iksem ja nende maksumus v\u00e4ga k\u00f5rge.<\/p>\n<p>Pakettide maaklerid pakuvad vajalikke aggregeerimise ja koormuse tasakaalustamise v\u00f5imalusi. N\u00e4iteks 40 Gbit\/s liikluse tasakaalustamine v\u00f5imaldab j\u00e4lgimisliiklust jagada mitme 10 Gbit\/s seadme vahel. P\u00e4rast seda suudate pikendada 10 Gbit\/s seadmete eluiga, kuni leiate piisavalt vahendeid kallimate seadmete ostmiseks, mis suudavad hallata k\u00f5rgemaid andmeedastuskiirusid. <\/p>\n<p><img decoding=\"async\" alt=\"V\u00f5imalused v\u00f5rgu n\u00e4htavuse lahenduste kasutamiseks\" src=\"\/wp-content\/uploads\/2019\/10\/015c648a6ce54407ca1f8373d0be8c93.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nTeine n\u00e4ide on t\u00f6\u00f6riistade \u00fchendamine \u00fchte kohta ning nendele vajalike andmete edastamine pakettide maaklerilt. M\u00f5nikord kasutatakse eraldiseisvaid lahendusi, mis on jaotatud \u00fcle v\u00f5rgu. Ettev\u00f5tte juhtimise assotsiatsiooni (EMA) l\u00e4biviidud uuringud n\u00e4itavad, et 32% ettev\u00f5tte lahendustest ei ole piisavalt koormatud, st v\u00e4hem kui 50%. T\u00f6\u00f6riistade kesksetamine ja koormuse tasakaalustamine v\u00f5imaldavad teil ressursse \u00fchendades suurendada kasutamist, kasutades v\u00e4hem seadmeid. Saate sageli edasi l\u00fckata t\u00e4iendavate seadmete ostmise, kuni kasutuse m\u00e4\u00e4r on piisavalt k\u00f5rge. <\/p>\n<p><b>N\u00e4ide nr 3 \u2013 t\u00f5rkeotsing \u00f5iguste v\u00e4hendamiseks\/muutmiseks (Change Board permissions)<\/b><\/p>\n<p>Kui v\u00f5rgus on seadmed, mis tagavad n\u00e4htavuse (jaoturid (TAP), NPB...), peate harva v\u00f5rku muutma. See v\u00f5imaldab optimeerida m\u00f5ningaid t\u00f5rkeotsinguprotsesse, et suurendada efektiivsust.<\/p>\n<p>N\u00e4iteks p\u00e4rast TAP-i installeerimist (\u201epaigaldatud ja unustatud\u201d) edastab see passiivselt kogu liikluse koopia NPB-le. See on tohutu eelis, kuna see k\u00f5rvaldab suure osa b\u00fcrokraatlikest n\u00fcanssidest \u2013 v\u00f5rgumuudatuste kinnitamise vajadusest. Kui installite ka pakettide maakleri, on praktiliselt k\u00f5ik andmed, mis on vajalikud t\u00f5rkeotsinguks, kohe k\u00e4ttesaadavad.<\/p>\n<p><img decoding=\"async\" alt=\"V\u00f5imalused v\u00f5rgu n\u00e4htavuse lahenduste kasutamiseks\" src=\"\/wp-content\/uploads\/2019\/10\/4fa52b82cd3bc9ff52ab9c5f3be7fd41.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nKui muudatuste tegemine ei ole vajalik, v\u00f5ib j\u00e4ta vahele muudatuste koosk\u00f5lastamise etapid ja minna otse t\u00f5rkeotsingu juurde. See uus protsess m\u00f5jutab oluliselt keskmise taastamisaja (MTTR \u2013 Mean Time to Repair) v\u00e4henemist. Uuringud n\u00e4itavad, et MTTR-i on v\u00f5imalik v\u00e4hendada kuni 80%.<\/p>\n<p><b>N\u00e4ide #4 \u2013 Rakenduste Intelligentsus, rakenduste filtreerimise ja andmete maskeerimise rakendamine turvalisuse t\u00f5hustamiseks<\/b><\/p>\n<p>Mis on rakenduste intelligentsus (Application Intelligence)? See tehnoloogia on saadaval pakettide vahendajates (NPB) IXIA. See on t\u00e4iustatud funktsionaalsus, mis v\u00f5imaldab liikuda v\u00e4lja pakettide filtreerimisest tasemel 2\u20134 (OSI mudel) ja t\u00e4ielikult \u00fcle minna tasemele 7 (rakendustase). Eeliseks on see, et kasutajate ja rakenduste k\u00e4itumise ja asukoha andmeid saab genereerida ja eksportida igas vajalikus formaadis \u2014 toored paketid, filtreeritud paketid v\u00f5i NetFlow (IxFlow) teave. IT-osakonnad saavad avastada varjatud v\u00f5rgu rakendusi, v\u00e4hendada v\u00f5rgu turbeohte ja v\u00e4hendada v\u00f5rgu seisakuid ja\/v\u00f5i suurendada v\u00f5rgu j\u00f5udlust. Tuntud ja tundmatute rakenduste eristavad omadused saavad tuvastatud, salvestatud ja edastatud spetsialiseeritud j\u00e4lgimise ja turvalisuse t\u00f6\u00f6riistadele.<\/p>\n<p><img decoding=\"async\" alt=\"V\u00f5imalused v\u00f5rgu n\u00e4htavuse lahenduste kasutamiseks\" src=\"\/wp-content\/uploads\/2019\/10\/b1b59be3134f644326876ff64fc92d5e.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<ul>\n<li>kahtlaste\/tundmatute rakenduste tuvastamine<\/li>\n<li>geolokatsiooni p\u00f5hjal kahtlase tegevuse tuvastamine, n\u00e4iteks kui P\u00f5hja-Korea kasutaja \u00fchendub teie FTP-ga <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/et\/server\/dts-shicago\/\"   title=\"serverile\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"2856\">serverile<\/a> ja edastab andmeid<\/li>\n<li>de\u0161ifreerimine <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/et\/ssl-sertifikat\/\"   title=\"SSL\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"2263\">SSL<\/a> potentsiaalsete ohtude kontrollimiseks ja anal\u00fc\u00fcsimiseks<\/li>\n<li>rakenduste eba\u00f5ige toimimise anal\u00fc\u00fcs<\/li>\n<li>liiklusmahu ja kasvutrendide anal\u00fc\u00fcs aktiivseks ressursside haldamiseks ja laienemise prognoosimiseks<\/li>\n<li>privaatsusandmete (krediitkaardid, kasutajatunnused jne) varjamine enne saatmist <\/li>\n<\/ul>\n<p>\nVisibility Intelligence funktsionaalsus on saadaval nii f\u00fc\u00fcsilistes kui virtuaalsetes (Cloud Lens Private) IXIA paketibrokerites (NPB) ning avalikes 'pilvedes' \u2014 Cloud Lens Public:<\/p>\n<p><img decoding=\"async\" alt=\"V\u00f5imalused v\u00f5rgu n\u00e4htavuse lahenduste kasutamiseks\" src=\"\/wp-content\/uploads\/2019\/10\/8c53733fafe1d101d0401a79a48d8538.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nLisaks NetStacki, PacketStacki ja AppStacki standardsetele funktsioonidele:<\/p>\n<p><img decoding=\"async\" alt=\"V\u00f5imalused v\u00f5rgu n\u00e4htavuse lahenduste kasutamiseks\" src=\"\/wp-content\/uploads\/2019\/10\/08631db239c0fad099d61f459d5d4636.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nViimase aja jooksul on lisandunud ka SecureStacki turvafunktsioon (privaatsusandmete t\u00f6\u00f6tlemise optimeerimiseks), MobileStack (mobiilsideoperaatoritele) ja TradeStack (finantsturgude andmete j\u00e4lgimiseks ja filtreerimiseks):<\/p>\n<p><img decoding=\"async\" alt=\"V\u00f5imalused v\u00f5rgu n\u00e4htavuse lahenduste kasutamiseks\" src=\"\/wp-content\/uploads\/2019\/10\/8a4b91da9d092b3eba8441df1e837154.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\n<img decoding=\"async\" alt=\"V\u00f5imalused v\u00f5rgu n\u00e4htavuse lahenduste kasutamiseks\" src=\"\/wp-content\/uploads\/2019\/10\/0fcdc54b7045b83e8c257c1249cf9e1f.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\n<img decoding=\"async\" alt=\"V\u00f5imalused v\u00f5rgu n\u00e4htavuse lahenduste kasutamiseks\" src=\"\/wp-content\/uploads\/2019\/10\/23f7266d2d275ae83810116522de29b8.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n <\/p>\n<h4>J\u00e4reldused<\/h4>\n<p>\nV\u00f5rgun\u00e4gemise lahendused on v\u00f5imas t\u00f6\u00f6riist, mis suudab optimeerida v\u00f5rgu j\u00e4lgimise ja turvalisuse arhitektuuri ning luua aluse vajalike andmete kogumiseks ja jagamiseks.<\/p>\n<p>Kasutusviisid v\u00f5imaldavad:<\/p>\n<ul>\n<li>anda vajalikud spetsiifilised andmed diagnoosimiseks ja t\u00f5rkeotsinguks vastavalt vajadusele<\/li>\n<li>lisada\/ eemaldada turbe- ja j\u00e4lgimislahendusi nii in-line kui ka out-of-band<\/li>\n<li>v\u00e4hendada MTTR-i<\/li>\n<li>tagada kiire reageerimine probleemidele<\/li>\n<li>l\u00e4biviia ulatuslik ohtude anal\u00fc\u00fcs<\/li>\n<li>kaotada enamik b\u00fcrokraatlikke koosk\u00f5lastusi<\/li>\n<li>v\u00e4hendada h\u00e4kkimise rahalisi tagaj\u00e4rgi, \u00fchendades vajalikud lahendused kiiresti v\u00f5rku ja v\u00e4hendades MTTR-i<\/li>\n<li>v\u00e4hendada SPAN-porti seadistamise kulusid ja t\u00f6\u00f6j\u00f5ukulusid<\/li>\n<\/ul>\n<p>Allikas: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/437344\/\">habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412\u0430\u0440\u0438\u0430\u043d\u0442\u044b \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044f \u0440\u0435\u0448\u0435\u043d\u0438\u0439 \u0434\u043b\u044f \u0432\u0438\u0434\u0438\u043c\u043e\u0441\u0442\u0438 \u0441\u0435\u0442\u0438 (visibility) \u0427\u0442\u043e \u0442\u0430\u043a\u043e\u0435 \u0432\u0438\u0434\u0438\u043c\u043e\u0441\u0442\u044c \u0441\u0435\u0442\u0438 (Network Visibility)? \u0412\u0438\u0434\u0438\u043c\u043e\u0441\u0442\u044c (Visibility) \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u044f\u0435\u0442\u0441\u044f \u0441\u043b\u043e\u0432\u0430\u0440\u0435\u043c \u0412\u0435\u0431\u0441\u0442\u0435\u0440\u0430 \u043a\u0430\u043a \u00ab\u0441\u043f\u043e\u0441\u043e\u0431\u043d\u043e\u0441\u0442\u044c \u0431\u044b\u0442\u044c \u043b\u0435\u0433\u043a\u043e \u0437\u0430\u043c\u0435\u0447\u0435\u043d\u043d\u044b\u043c\u00bb \u0438\u043b\u0438 \u00ab\u0441\u0442\u0435\u043f\u0435\u043d\u044c \u044f\u0441\u043d\u043e\u0441\u0442\u0438\u00bb. \u041f\u043e\u0434 \u0432\u0438\u0434\u0438\u043c\u043e\u0441\u0442\u044c\u044e \u0441\u0435\u0442\u0438 \u0438\u043b\u0438 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f \u043f\u043e\u0434\u0440\u0430\u0437\u0443\u043c\u0435\u0432\u0430\u0435\u0442\u0441\u044f \u0443\u0434\u0430\u043b\u0435\u043d\u0438\u0435 \u0441\u043b\u0435\u043f\u044b\u0445 \u0437\u043e\u043d, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u0441\u043a\u0440\u044b\u0432\u0430\u044e\u0442 \u0441\u043f\u043e\u0441\u043e\u0431\u043d\u043e\u0441\u0442\u044c \u043b\u0435\u0433\u043a\u043e \u0432\u0438\u0434\u0435\u0442\u044c (\u0438\u043b\u0438 \u043a\u043e\u043b\u0438\u0447\u0435\u0441\u0442\u0432\u0435\u043d\u043d\u043e \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u044f\u0442\u044c), \u0447\u0442\u043e \u043f\u0440\u043e\u0438\u0441\u0445\u043e\u0434\u0438\u0442 \u0432 \u0441\u0435\u0442\u0438 \u0438\/\u0438\u043b\u0438 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f\u0445 \u0432 \u0441\u0435\u0442\u0438. \u042d\u0442\u0430 \u0432\u0438\u0434\u0438\u043c\u043e\u0441\u0442\u044c \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u0418\u0422-\u043a\u043e\u043c\u0430\u043d\u0434\u0430\u043c [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":29037,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-38707","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-administrirovanie"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0412\u0430\u0440\u0438\u0430\u043d\u0442\u044b \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044f \u0440\u0435\u0448\u0435\u043d\u0438\u0439 \u0434\u043b\u044f \u0432\u0438\u0434\u0438\u043c\u043e\u0441\u0442\u0438 \u0441\u0435\u0442\u0438 (visibility) \u0427\u0442\u043e \u0442\u0430\u043a\u043e\u0435 \u0432\u0438\u0434\u0438\u043c\u043e\u0441\u0442\u044c \u0441\u0435\u0442\u0438 (Network Visibility)? 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N\u00e4htavus (Visibility) on m\u00e4\u00e4ratletud Websteri s\u00f5naraamatus kui \u201ev\u00f5ime olla kergesti m\u00e4rgatav\u201d v\u00f5i \u201eselguse aste\u201d. V\u00f5rgu v\u00f5i rakenduse n\u00e4htavuse all m\u00f5istetakse pimeda ala k\u00f5rvaldamist, mis varjab v\u00f5imet kergesti n\u00e4ha (v\u00f5i kvantitatiivselt m\u00e4\u00e4ratleda), mis toimub v\u00f5rgus ja\/v\u00f5i rakendustes v\u00f5rgus. 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