{"id":8234630,"date":"2026-10-24T17:28:56","date_gmt":"2026-10-24T17:28:56","guid":{"rendered":"https:\/\/scn.eu\/?post_type=scn_guide&#038;p=8234630"},"modified":"2026-10-24T17:32:47","modified_gmt":"2026-10-24T17:32:47","slug":"iec-62443-nis2","status":"publish","type":"scn_guide","link":"https:\/\/scn.eu\/et\/juhendid\/iec-62443-nis2\/","title":{"rendered":"IEC 62443 ja NIS2 \u2013 t\u00f6\u00f6stusv\u00f5rkude k\u00fcberturvalisus"},"content":{"rendered":"<div class=\"scn-guide\">\n<h1>IEC 62443 ja NIS2 \u2013 t\u00f6\u00f6stusv\u00f5rkude k\u00fcberturvalisus<\/h1>\n<p class=\"g-lead\">Juhts\u00fcsteemid ja t\u00f6\u00f6stusv\u00f5rgud on t\u00e4nap\u00e4eval r\u00fcnnakute sihtm\u00e4rk ning NIS2 on muutnud k\u00fcberturvalisuse paljude organisatsioonide jaoks seadusest tulenevaks n\u00f5udeks. Selgitame, mis on IEC 62443, mida t\u00e4hendab NIS2 ja millised esimesed sammud on OT-v\u00f5rgus k\u00f5ige olulisemad.<\/p>\n<div class=\"g-short\"><b class=\"t\">L\u00fchidalt<\/b><\/p>\n<ul>\n<li><b>IEC 62443<\/b> \u2013 t\u00f6\u00f6stuslike juhts\u00fcsteemide (OT) k\u00fcberturvalisuse standardisari, mis esitab n\u00f5uded omanikele, integraatoritele ja tootetarnijatele.<\/li>\n<li><b>Tsoonid ja kanalid<\/b> \u2013 jaga v\u00f5rk riski j\u00e4rgi tsoonideks ja kontrolli kogu nendevahelist liiklust.<\/li>\n<li><b>SL 1\u20134<\/b> \u2013 turvatasemed n\u00e4itavad, millise r\u00fcndaja vastu kaitse peab pidama.<\/li>\n<li><b>NIS2<\/b> \u2013 ELi direktiiv, mis n\u00f5uab m\u00e4\u00e4ratud sektorite keskmistelt ja suurtelt organisatsioonidelt riskijuhtimist ja intsidentidest teatamist. See kehtib iga ELi riigi siseriikliku \u00f5iguse kaudu.<\/li>\n<li><b>Alusta<\/b> \u2013 inventuurist, segmenteerimisest, turvalisest kaugjuurdep\u00e4\u00e4sust ja uuendamiskavast.<\/li>\n<\/ul>\n<\/div>\n<h2>Miks OT-turvalisus erineb IT-turvalisusest<\/h2>\n<p>Kontori-IT-s on sageli esikohal konfidentsiaalsus. Juhts\u00fcsteemis on k\u00f5ige t\u00e4htsamad k\u00e4ideldavus ja ohutus: protsess ei tohi seiskuda ja vale inimene ei tohi klappi avada. Seadmed on sageli kasutuses 15\u201330 aastat, uuendused n\u00f5uavad planeeritud seisakuid ning vanematel protokollidel, n\u00e4iteks Modbusil, puudub autentimine. Samal ajal \u00fchendatakse kaughoolduse jaoks v\u00f5rku \u00fcha rohkem masinaid.<\/p>\n<div class=\"g-short\">\n<p style=\"margin:0\">See juhend on tehniline \u00fclevaade, mitte \u00f5igusn\u00f5uanne. Sinu organisatsiooni n\u00f5uded m\u00e4\u00e4ravad siseriiklik seadus ja j\u00e4relevalveasutus.<\/p>\n<\/div>\n<h2>Mis on IEC 62443?<\/h2>\n<p>IEC 62443 on rahvusvaheliste standardite sari, mis k\u00e4sitleb t\u00f6\u00f6stusautomaatika ja juhts\u00fcsteemide k\u00fcberturvalisust. See p\u00f5hineb USA organisatsiooni ISA t\u00f6\u00f6l, mist\u00f5ttu kohtab m\u00f5nikord ka nimetust ISA\/IEC 62443.<\/p>\n<div class=\"g-tbl\">\n<table>\n<thead>\n<tr>\n<th>Osa<\/th>\n<th>Sisu<\/th>\n<th>Kellele<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td class=\"n\">62443-2-1<\/td>\n<td>Turvaprogramm k\u00e4ituseks ja hoolduseks<\/td>\n<td>Omanikud<\/td>\n<\/tr>\n<tr>\n<td class=\"n\">62443-2-4<\/td>\n<td>Turvan\u00f5uded integraatoritele ja teenusepakkujatele<\/td>\n<td>Integraatorid<\/td>\n<\/tr>\n<tr>\n<td class=\"n\">62443-3-2<\/td>\n<td>Riskihindamine, tsoonid ja kanalid<\/td>\n<td>Omanikud ja integraatorid<\/td>\n<\/tr>\n<tr>\n<td class=\"n\">62443-3-3<\/td>\n<td>S\u00fcsteemi turvan\u00f5uded ja turvatasemed<\/td>\n<td>Integraatorid<\/td>\n<\/tr>\n<tr>\n<td class=\"n\">62443-4-1<\/td>\n<td>Turvaline tootearenduse eluts\u00fckkel<\/td>\n<td>Tootetarnijad<\/td>\n<\/tr>\n<tr>\n<td class=\"n\">62443-4-2<\/td>\n<td>Komponentide tehnilised turvan\u00f5uded<\/td>\n<td>Tootetarnijad<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h3>Kolm rolli<\/h3>\n<p>Omanik (asset owner) omab ja k\u00e4itab rajatist ning vastutab riskide eest. Integraator projekteerib, ehitab ja hooldab s\u00fcsteemi. Tootetarnija arendab komponente, n\u00e4iteks kommutaatoreid, ruutereid, PLC-sid ja tarkvara.<\/p>\n<h3>Turvatasemed SL 1\u20134<\/h3>\n<ul>\n<li><b>SL 1<\/b> \u2013 kaitse tahtmatute vigade ja juhuslike rikkumiste eest.<\/li>\n<li><b>SL 2<\/b> \u2013 kaitse tahtlike r\u00fcnnakute eest, mis kasutavad lihtsaid vahendeid ja \u00fcldisi oskusi.<\/li>\n<li><b>SL 3<\/b> \u2013 kaitse keerukate r\u00fcnnakute eest, millel on m\u00f5\u00f5dukad ressursid ja juhts\u00fcsteemide tundmine.<\/li>\n<li><b>SL 4<\/b> \u2013 kaitse keerukate r\u00fcnnakute eest, millel on ulatuslikud ressursid ja k\u00f5rge motivatsioon.<\/li>\n<\/ul>\n<h3>Tsoonid ja kanalid<\/h3>\n<p>Tsoon on samade turvan\u00f5uetega seadmete r\u00fchm, n\u00e4iteks tootmisliin v\u00f5i alajaam. Kanal (conduit) on tsoonide vaheline kontrollitud sidetee, tavaliselt tulem\u00fc\u00fcri v\u00f5i turvaruuteri kaudu. M\u00f5te on selles, et \u00fchte tsooni tunginud r\u00fcndaja ei p\u00e4\u00e4seks vabalt \u00fclej\u00e4\u00e4nud rajatisse.<\/p>\n<figure><img loading=\"lazy\" src=\"https:\/\/scn.eu\/wp-content\/uploads\/2026\/10\/scn-guide-iec62443-f1-et.webp\" alt=\"Tsoonideks jagatud t\u00f6\u00f6stusv\u00f5rk: ettev\u00f5tte v\u00f5rk, DMZ ja kahe liiniga tootmisv\u00f5rk. Tulem\u00fc\u00fcrid toimivad tsoonidevaheliste kanalitena ning tarnija kaugjuurdep\u00e4\u00e4s kulgeb VPN-ruuteri kaudu DMZ-i\" width=\"1520\" height=\"650\" loading=\"lazy\" decoding=\"async\"><figcaption>Tsoonid ja kanalid: iga tsooni kaitseb kontrollitud sissep\u00e4\u00e4s ja kaugjuurdep\u00e4\u00e4s kulgeb ainult DMZ-i kaudu.<\/figcaption><\/figure>\n<h2>Mida NIS2 n\u00f5uab \u2013 ja kellele see kehtib?<\/h2>\n<p>NIS2 ehk direktiiv (EL) 2022\/2555 asendas esimese NIS-direktiivi ja liikmesriigid pidid selle \u00fcle v\u00f5tma 2024. aasta oktoobriks. N\u00e4iteks Rootsis kehtib k\u00fcberturvalisuse seadus (2025:1506) alates 15. jaanuarist 2026 ja selle alla kuuluvad organisatsioonid peavad end registreerima Rootsi tsiviilkaitseametis (MCF). Teised riigid on eri etappides ja \u00dchendkuningriigil on oma reeglid. Eestis tasub n\u00f5udeid kontrollida k\u00fcberturvalisuse seadusest ja Riigi Infos\u00fcsteemi Ameti (RIA) juhistest.<\/p>\n<p>Direktiiv kehtib \u00fcldjuhul m\u00e4\u00e4ratud sektorite keskmistele ja suurtele organisatsioonidele, alates 50 t\u00f6\u00f6tajast v\u00f5i 10 miljoni euro suurusest aastak\u00e4ibest. Nende hulka kuuluvad energeetika, transport, tervishoid, vesi ja digitaristu, aga ka meditsiiniseadmete, elektroonika, masinate ja s\u00f5idukite ning toiduainete ja kemikaalide tootmine. M\u00f5ned organisatsioonid kuuluvad direktiivi alla suurusest s\u00f5ltumata.<\/p>\n<ul>\n<li><b>Riskijuhtimine<\/b> \u2013 meetmed muu hulgas intsidentide k\u00e4sitlemiseks, talitluspidevuseks, tarneahela turvalisuseks, juurdep\u00e4\u00e4su kontrolliks ja kr\u00fcpteerimiseks.<\/li>\n<li><b>Juhtkonna vastutus<\/b> \u2013 juhtkond peab olema turvameetmete alal koolitatud ja vastutab nende rakendamise eest.<\/li>\n<li><b>Intsidentidest teatamine<\/b> \u2013 varajane hoiatus 24 tunni jooksul, intsidenditeade 72 tunni jooksul ja l\u00f5pparuanne \u00fche kuu jooksul.<\/li>\n<li><b>Sanktsioonid<\/b> \u2013 oluliste \u00fcksuste puhul trahvid kuni 10 miljonit eurot v\u00f5i 2 % \u00fclemaailmsest aastak\u00e4ibest.<\/li>\n<\/ul>\n<p>Direktiivi kohaldamisalast v\u00e4lja j\u00e4\u00e4vaid ettev\u00f5tteid puudutab see siiski, sest selle alla kuuluvad kliendid peavad esitama n\u00f5udeid oma tarnijatele. Digitaalsete elementidega toodete tootjatele kehtib lisaks ELi k\u00fcberkerksuse m\u00e4\u00e4rus (CRA), m\u00e4\u00e4rus (EL) 2024\/2847, mida kohaldatakse t\u00e4ies ulatuses alates 2027. aasta detsembrist.<\/p>\n<h2>Praktilised esimesed sammud<\/h2>\n<ol>\n<li><b>Tee inventuur.<\/b> Pane kirja seadmed, p\u00fcsivara versioonid ja \u00fchendused. Sa ei saa kaitsta seda, millest sa ei tea.<\/li>\n<li><b>Segmenteeri.<\/b> Jaga v\u00f5rk tsoonideks hallatavate kommutaatorite VLAN-idega ja paigalda nende vahele tulem\u00fc\u00fcrid. Eralda kontoriv\u00f5rk OT-v\u00f5rgust DMZ-iga.<\/li>\n<li><b>Kontrolli liiklust.<\/b> Pakettide s\u00fcvakontrolliga (DPI) t\u00f6\u00f6stuslikud tulem\u00fc\u00fcrid ja turvaruuterid m\u00f5istavad selliseid protokolle nagu Modbus ja suudavad volitamata k\u00e4sud blokeerida.<\/li>\n<li><b>Turva kaugjuurdep\u00e4\u00e4s.<\/b> Internetti avatud porte ei tohi olla. Tarnijad \u00fchenduvad VPN-iga kontrollitud punkti kaudu, isiklike kontode ja kaheastmelise sisselogimisega.<\/li>\n<li><b>Uuenda ja karasta.<\/b> Planeeri p\u00fcsivara uuendused, muuda vaikeparoolid ja l\u00fclita v\u00e4lja kasutamata teenused ja pordid.<\/li>\n<li><b>Logi ja j\u00e4lgi.<\/b> Kogu logid kesksesse kohta ja anna k\u00f5rvalekallete korral h\u00e4ire, et intsidendid avastataks \u00f5igel ajal.<\/li>\n<li><b>Planeeri taastamine.<\/b> Varunda konfiguratsioonid ja programmid ning kontrolli, et taastamine ka tegelikult t\u00f6\u00f6tab.<\/li>\n<\/ol>\n<h3>N\u00e4ited eri valdkondadest<\/h3>\n<ul>\n<li><b>Energeetika<\/b> \u2013 turvaruuterid alajaamade ja juhtimiskeskuse vahel ning tulem\u00fc\u00fcrid, mis m\u00f5istavad IEC 61850 protokolle.<\/li>\n<li><b>Vesi ja kanalisatsioon<\/b> \u2013 pumbajaamad, millega \u00fchendutakse avatud portide asemel mobiilsidev\u00f5rgu ja VPN-i kaudu.<\/li>\n<li><b>Tehased ja masinaehitajad<\/b> \u2013 NAT-seadmed, mis eraldavad masina v\u00f5rgu kliendi v\u00f5rgust, ja VPN-ruuterid kaughoolduseks.<\/li>\n<li><b>Raudtee<\/b> \u2013 turvaruuterid ja tulem\u00fc\u00fcriga l\u00fc\u00fcsid, mis eraldavad rongisiseseid alams\u00fcsteeme.<\/li>\n<li><b>Haiglad ja kaitsevaldkond<\/b> \u2013 meditsiiniseadmed eraldi tsoonides ning range eraldatus eri salastatusastmega v\u00f5rkude vahel.<\/li>\n<\/ul>\n<h2>Mida tarnijatelt n\u00f5uda?<\/h2>\n<ul>\n<li>Standardi <b>IEC 62443-4-2<\/b> j\u00e4rgi sertifitseeritud tooted koos m\u00e4rgitud turvatasemega, n\u00e4iteks SL 2.<\/li>\n<li>Arendus standardi <b>IEC 62443-4-1<\/b> j\u00e4rgi, sealhulgas haavatavuste k\u00e4sitlemine.<\/li>\n<li>Selge teave selle kohta, kui kaua turvauuendusi pakutakse.<\/li>\n<li>Turvalised vaikeseaded: \u00fchiseid vaikeparoole pole, p\u00fcsivara on allkirjastatud ja kasutusel on turvaline alglaadimine. Soovitatavalt ka tarkvara koostisosade loend (SBOM).<\/li>\n<li>Integraatoritelt ja teenusepakkujatelt: t\u00f6\u00f6meetodid standardi <b>IEC 62443-2-4<\/b> j\u00e4rgi.<\/li>\n<\/ul>\n<h2>Levinud vead<\/h2>\n<ol class=\"g-pit\">\n<li><b>Lame v\u00f5rk.<\/b> \u00dches lames v\u00f5rgus v\u00f5ib hoolduss\u00fclearvutis olev pahavara j\u00f5uda iga PLC-ni. Segmenteerimine on sageli k\u00f5ige t\u00f5husam meede.<\/li>\n<li><b>\u00d5huvahe, mida tegelikult pole.<\/b> USB-m\u00e4lupulgad, hoolduss\u00fclearvutid ja kellegi lisatud 4G-modemid rikuvad isolatsiooni. Kaardista k\u00f5ik sissep\u00e4\u00e4suteed.<\/li>\n<li><b>Kaugjuurdep\u00e4\u00e4s k\u00f5rvalt.<\/b> Kiirlahendusena tehtud pordisuunamised ja kaugjuhtimist\u00f6\u00f6riistad j\u00e4\u00e4vad sageli alles. Koonda kogu kaugjuurdep\u00e4\u00e4s \u00fchte kontrollitud lahendusse.<\/li>\n<li><b>Sertifikaat muutub alibiks.<\/b> IEC 62443-4-2 j\u00e4rgi sertifitseeritud komponent ei muuda s\u00fcsteemi turvaliseks. See s\u00f5ltub sellest, kuidas tsoonid, kanalid ja protseduurid on \u00fcles ehitatud.<\/li>\n<\/ol>\n<h2>Turvalised v\u00f5rgutooted SCN-ilt<\/h2>\n<p>Meie valikus on muu hulgas Moxa, Axiomteki, INSYS icomi, HMS Networksi ja Yaskawa turvaruuterid, t\u00f6\u00f6stuslikud tulem\u00fc\u00fcrid, NAT-seadmed, VPN-ruuterid ja hallatavad kommutaatorid. Osa valiku tooteid on sertifitseeritud standardi IEC 62443-4-2 j\u00e4rgi, n\u00e4iteks Moxa jadaliidese seadmeserver NPort 6600-G2 tasemel SL 2.<\/p>\n<h3>N\u00e4ited meie valikust<\/h3>\n<div class=\"g-prod\"><a class=\"g-pc\" href=\"https:\/\/scn.eu\/et\/toode\/edr-g9010-et\/\"><img loading=\"lazy\" src=\"https:\/\/scn.eu\/wp-content\/uploads\/2026\/10\/moxa-edr-g9010-main.webp\" alt=\"Moxa EDR-G9010 10-pordiline gigabit-turvaruuter\" width=\"800\" height=\"800\" loading=\"lazy\" decoding=\"async\"><span class=\"g-pb\">Moxa<\/span><span class=\"g-pn\">EDR-G9010 10-pordiline gigabit-turvaruuter<\/span><span class=\"g-pw\">Turvaruuter tulem\u00fc\u00fcri, IPS-i ja pakettide s\u00fcvakontrolliga ning kuni 250 IPseci tunneliga.<\/span><\/a><a class=\"g-pc\" href=\"https:\/\/scn.eu\/et\/toode\/ina200-et\/\"><img loading=\"lazy\" src=\"https:\/\/scn.eu\/wp-content\/uploads\/2026\/10\/axiomtek-ina200-main.webp\" alt=\"Axiomtek iNA200 DIN-liistu OT k\u00fcberturbe l\u00fc\u00fcs\" width=\"800\" height=\"800\" loading=\"lazy\" decoding=\"async\"><span class=\"g-pb\">Axiomtek<\/span><span class=\"g-pn\">iNA200 DIN-liistu OT k\u00fcberturbe l\u00fc\u00fcs<\/span><span class=\"g-pw\">DIN-liistule paigaldatav OT k\u00fcberturbe l\u00fc\u00fcs TPM 2.0, LAN-m\u00f6\u00f6daviigu, SFP kiudoptiliste portide ja 5G-pesaga, temperatuurivahemikule \u221240 kuni 70 \u00b0C.<\/span><\/a><a class=\"g-pc\" href=\"https:\/\/scn.eu\/et\/toode\/mrx-et\/\"><img loading=\"lazy\" src=\"https:\/\/scn.eu\/wp-content\/uploads\/2025\/01\/AF_MRX3_LTE_Basic_600x600_RGB_96dpi__1001658325203.jpeg\" alt=\"INSYS icom MRX3 modulaarne t\u00f6\u00f6stusruuter\" width=\"800\" height=\"800\" loading=\"lazy\" decoding=\"async\"><span class=\"g-pb\">INSYS icom<\/span><span class=\"g-pn\">MRX3 modulaarne t\u00f6\u00f6stusruuter<\/span><span class=\"g-pw\">Modulaarne t\u00f6\u00f6stusruuter turvaliseks kaugjuurdep\u00e4\u00e4suks masinatele ja elut\u00e4htsale taristule.<\/span><\/a><\/div>\n<div class=\"g-links\"><a href=\"https:\/\/scn.eu\/et\/tootekategooria\/tooteid\/network-products-et\/secure-routers\/\">Turvaruuterid<\/a><a href=\"https:\/\/scn.eu\/et\/tootekategooria\/tooteid\/network-products-et\/vpn-routers-et\/\">VPN-ruuterid<\/a><a href=\"https:\/\/scn.eu\/et\/tootekategooria\/tooteid\/network-products-et\/ethernet-et\/managed-switches-et\/\">Hallatavad kommutaatorid<\/a><a href=\"https:\/\/scn.eu\/et\/tootekategooria\/tooteid\/network-products-et\/\">V\u00f5rgutooted<\/a><\/div>\n<div class=\"g-cta\">\n<p>Soovid oma v\u00f5rku segmenteerida v\u00f5i kaugjuurdep\u00e4\u00e4su turvata? Kirjelda paigaldust meie inseneridele \u2013 saad vastuse 24 tunni jooksul.<\/p>\n<p><a href=\"https:\/\/scn.eu\/et\/kontakt\/\">K\u00fcsi inseneri k\u00e4est<\/a><\/div>\n<h2>Korduma kippuvad k\u00fcsimused<\/h2>\n<details>\n<summary>Kas IEC 62443 on kohustuslik?<\/summary>\n<p>Standard ise on vabatahtlik, kuid seda kasutatakse sageli NIS2 n\u00f5uete t\u00e4itmise t\u00f5endamiseks ja \u00fcha rohkem kliente n\u00f5uab seda hangetes.<\/p>\n<\/details>\n<details>\n<summary>Mis vahe on standarditel IEC 62443 ja ISO\/IEC 27001?<\/summary>\n<p>ISO\/IEC 27001 kirjeldab kogu organisatsiooni infoturbe juhtimiss\u00fcsteemi. IEC 62443 on kirjutatud t\u00f6\u00f6stuslikele juhts\u00fcsteemidele ning sisaldab tehnilisi n\u00f5udeid s\u00fcsteemidele ja komponentidele. Paljud kasutavad m\u00f5lemat.<\/p>\n<\/details>\n<details>\n<summary>Kas minu ettev\u00f5te kuulub NIS2 alla?<\/summary>\n<p>See s\u00f5ltub sektorist ja suurusest. Kontrolli siseriiklikku seadust ja j\u00e4relevalveasutuse juhiseid. Kohaldamisalast v\u00e4lja j\u00e4\u00e4vad ettev\u00f5tted saavad n\u00f5udeid sageli klientidelt, kes direktiivi alla kuuluvad.<\/p>\n<\/details>\n<details>\n<summary>Mida t\u00e4hendab IEC 62443 puhul SL 2?<\/summary>\n<p>Turvatase 2 t\u00e4hendab kaitset tahtlike r\u00fcnnakute eest, mis kasutavad lihtsaid vahendeid ja \u00fcldisi oskusi. See on sertifitseeritud t\u00f6\u00f6stuslike v\u00f5rgutoodete puhul levinud tase.<\/p>\n<\/details>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Juhts\u00fcsteemid ja t\u00f6\u00f6stusv\u00f5rgud on t\u00e4nap\u00e4eval r\u00fcnnakute sihtm\u00e4rk ning NIS2 on muutnud k\u00fcberturvalisuse paljude organisatsioonide jaoks seadusest tulenevaks n\u00f5udeks. Selgitame, mis on IEC 62443, mida t\u00e4hendab NIS2 ja millised esimesed sammud on OT-v\u00f5rgus k\u00f5ige olulisemad.<\/p>\n","protected":false},"author":11,"featured_media":8234279,"template":"","meta":{"_yoast_wpseo_focuskw":"iec 62443","_yoast_wpseo_metadesc":"IEC 62443 ja NIS2 t\u00f6\u00f6stusv\u00f5rkudes: tsoonid ja kanalid, turvatasemed SL 1\u20134, mida NIS2 n\u00f5uab ja praktilised esimesed sammud OT-turvalisuse tagamiseks.","_kad_post_transparent":"","_kad_post_title":"hide","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"hide","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","_scn_guide_cats":[869,868,871],"_scn_guide_sectors":[10762],"_scn_guide_type":"industry","_scn_guide_order":60,"footnotes":""},"class_list":["post-8234630","scn_guide","type-scn_guide","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>IEC 62443 ja NIS2 \u2013 t\u00f6\u00f6stusv\u00f5rkude k\u00fcberturvalisus | SCN<\/title>\n<meta name=\"description\" content=\"IEC 62443 ja NIS2 t\u00f6\u00f6stusv\u00f5rkudes: tsoonid ja kanalid, turvatasemed SL 1\u20134, mida NIS2 n\u00f5uab ja praktilised esimesed sammud OT-turvalisuse tagamiseks.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/scn.eu\/et\/juhendid\/iec-62443-nis2\/\" \/>\n<meta property=\"og:locale\" content=\"et_EE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"IEC 62443 ja NIS2 \u2013 t\u00f6\u00f6stusv\u00f5rkude k\u00fcberturvalisus | SCN\" \/>\n<meta property=\"og:description\" content=\"IEC 62443 ja NIS2 t\u00f6\u00f6stusv\u00f5rkudes: tsoonid ja kanalid, turvatasemed SL 1\u20134, mida NIS2 n\u00f5uab ja praktilised esimesed sammud OT-turvalisuse tagamiseks.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/scn.eu\/et\/juhendid\/iec-62443-nis2\/\" \/>\n<meta property=\"og:site_name\" content=\"SCN\" \/>\n<meta property=\"article:modified_time\" content=\"2026-10-24T17:32:47+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/scn.eu\/wp-content\/uploads\/2026\/10\/scn-guide-iec62443-f1-et.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"1520\" \/>\n\t<meta property=\"og:image:height\" content=\"650\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Eeldatav lugemisaeg\" \/>\n\t<meta name=\"twitter:data1\" content=\"6 minutit\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/scn.eu\\\/et\\\/juhendid\\\/iec-62443-nis2\\\/\",\"url\":\"https:\\\/\\\/scn.eu\\\/et\\\/juhendid\\\/iec-62443-nis2\\\/\",\"name\":\"IEC 62443 ja NIS2 \u2013 t\u00f6\u00f6stusv\u00f5rkude k\u00fcberturvalisus | SCN\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/scn.eu\\\/et\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/scn.eu\\\/et\\\/juhendid\\\/iec-62443-nis2\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/scn.eu\\\/et\\\/juhendid\\\/iec-62443-nis2\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/scn.eu\\\/wp-content\\\/uploads\\\/2026\\\/10\\\/scn-guide-iec62443-f1-et.webp\",\"datePublished\":\"2026-10-24T17:28:56+00:00\",\"dateModified\":\"2026-10-24T17:32:47+00:00\",\"description\":\"IEC 62443 ja NIS2 t\u00f6\u00f6stusv\u00f5rkudes: tsoonid ja kanalid, turvatasemed SL 1\u20134, mida NIS2 n\u00f5uab ja praktilised esimesed sammud OT-turvalisuse tagamiseks.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/scn.eu\\\/et\\\/juhendid\\\/iec-62443-nis2\\\/#breadcrumb\"},\"inLanguage\":\"et\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/scn.eu\\\/et\\\/juhendid\\\/iec-62443-nis2\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"et\",\"@id\":\"https:\\\/\\\/scn.eu\\\/et\\\/juhendid\\\/iec-62443-nis2\\\/#primaryimage\",\"url\":\"https:\\\/\\\/scn.eu\\\/wp-content\\\/uploads\\\/2026\\\/10\\\/scn-guide-iec62443-f1-et.webp\",\"contentUrl\":\"https:\\\/\\\/scn.eu\\\/wp-content\\\/uploads\\\/2026\\\/10\\\/scn-guide-iec62443-f1-et.webp\",\"width\":1520,\"height\":650,\"caption\":\"Tsoonideks jagatud t\u00f6\u00f6stusv\u00f5rk: ettev\u00f5tte v\u00f5rk, DMZ ja kahe liiniga tootmisv\u00f5rk. 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