{"id":31629,"date":"2019-10-31T21:42:14","date_gmt":"2019-10-31T18:42:14","guid":{"rendered":"https:\/\/prohoster.info\/blog\/8-check-point-getting-started-r80-20-nat\/"},"modified":"2019-10-31T21:42:14","modified_gmt":"2019-10-31T18:42:14","slug":"8-check-point-getting-started-r80-20-nat","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/administrirovanie\/8-check-point-getting-started-r80-20-nat","title":{"rendered":"8. Check Point Kezd\u0151 \u00fatmutat\u00f3 R80.20. NAT","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><img decoding=\"async\" alt=\"8. Check Point Kezd\u0151 \u00fatmutat\u00f3 R80.20. NAT\" src=\"\/wp-content\/uploads\/2019\/04\/685e0796b7dc1aaacdacbd9fb27be938.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\n\u00dcdv\u00f6z\u00f6lj\u00fck a 8. leck\u00e9n! Ez a lecke nagyon fontos, mert a befejez\u00e9s\u00e9vel m\u00e1r be tudja \u00e1ll\u00edtani az internetkapcsolatot a felhaszn\u00e1l\u00f3i sz\u00e1m\u00e1ra! Be kell vallanom, hogy sokan itt befejezik a be\u00e1ll\u00edt\u00e1st \ud83d\ude42 De mi nem tartozunk k\u00f6z\u00e9j\u00fck! M\u00e9g sok \u00e9rdekes dolog v\u00e1r r\u00e1nk. Most pedig t\u00e9rj\u00fcnk a lecke t\u00e9m\u00e1j\u00e1hoz.<\/p>\n<p>Ahogy val\u00f3sz\u00edn\u0171leg m\u00e1r kital\u00e1lt\u00e1k, ma a NAT-r\u00f3l fogunk besz\u00e9lni. Biztos vagyok benne, hogy mindenki, aki ezt a leck\u00e9t n\u00e9zi, tudja, mi az a NAT. Ez\u00e9rt nem fogunk r\u00e9szletesen kit\u00e9rni arra, hogyan m\u0171k\u00f6dik. Csak ism\u00e9t megjegyzem, hogy a NAT a c\u00edmek ford\u00edt\u00e1sa, amelyet a \u201efeh\u00e9r\u201d, azaz nyilv\u00e1nos IP-c\u00edmek (azok a c\u00edmek, amelyek az Interneten routerezve vannak) megtakar\u00edt\u00e1sa c\u00e9lj\u00e1b\u00f3l tal\u00e1ltak ki. <\/p>\n<p>Az el\u0151z\u0151 leck\u00e9ben val\u00f3sz\u00edn\u0171leg m\u00e1r \u00e9szrevette, hogy a NAT r\u00e9sze az Access Control politik\u00e1nak. Ez nagyon logikus. A SmartConsole-ban a NAT be\u00e1ll\u00edt\u00e1sai k\u00fcl\u00f6n f\u00fclre ker\u00fcltek. Ma mindenk\u00e9ppen ben\u00e9z\u00fcnk oda. \u00d6sszess\u00e9g\u00e9ben ebben a leck\u00e9ben a NAT t\u00edpusait fogjuk megbesz\u00e9lni, be\u00e1ll\u00edtjuk az internetkapcsolatot, \u00e9s megvizsg\u00e1lunk egy klasszikus p\u00e9ld\u00e1t a port forwardinggal kapcsolatban. Azaz, azt a funkci\u00f3t, amelyet a v\u00e1llalatok leggyakrabban haszn\u00e1lnak. Kezdj\u00fck el.<br \/>\n<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><\/p>\n<h3>K\u00e9t NAT be\u00e1ll\u00edt\u00e1si m\u00f3d<\/h3>\n<p>\nA Check Point k\u00e9t NAT be\u00e1ll\u00edt\u00e1si m\u00f3dot t\u00e1mogat: <b>Automatikus NAT<\/b> \u00e9s <b>Manu\u00e1lis NAT<\/b>. Mindk\u00e9t m\u00f3dszerhez k\u00e9tf\u00e9le ford\u00edt\u00e1s tartozik: <b>Rejtett NAT<\/b> \u00e9s <b>Statikus NAT<\/b>. \u00c1ltal\u00e1nos form\u00e1ban ez az al\u00e1bbi k\u00e9p szerint n\u00e9z ki:<\/p>\n<p><img decoding=\"async\" alt=\"8. Check Point Kezd\u0151 \u00fatmutat\u00f3 R80.20. NAT\" src=\"\/wp-content\/uploads\/2019\/04\/8ac626e12eb07dd5900fb42a516ca706.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\n\u00c9rtem, hogy most val\u00f3sz\u00edn\u0171leg minden el\u00e9g bonyolultnak t\u0171nik, ez\u00e9rt n\u00e9zz\u00fck meg mindegyik t\u00edpust kicsit r\u00e9szletesebben.<\/p>\n<h3>Automatikus NAT<\/h3>\n<p>\nEz a leggyorsabb \u00e9s legegyszer\u0171bb m\u00f3d. A NAT be\u00e1ll\u00edt\u00e1sa sz\u00f3 szerint k\u00e9t kattint\u00e1ssal elv\u00e9gezhet\u0151. Csak annyit kell tennie, hogy megnyitja a megfelel\u0151 objektum (legyen az \u00e1tj\u00e1r\u00f3, h\u00e1l\u00f3zat, hoszt stb.) tulajdons\u00e1gait, \u00e1tkattint a NAT f\u00fclre, \u00e9s bepip\u00e1lja a \u201c<b>Automatikus c\u00edmford\u00edt\u00f3 szab\u00e1lyok hozz\u00e1ad\u00e1sa<\/b>\u201d opci\u00f3t. Itt tal\u00e1lja az \u00e1tviteli m\u00f3d mez\u0151t is. Mint m\u00e1r eml\u00edtett\u00fck, kett\u0151 van bel\u0151le.<\/p>\n<p><img decoding=\"async\" alt=\"8. Check Point Kezd\u0151 \u00fatmutat\u00f3 R80.20. NAT\" src=\"\/wp-content\/uploads\/2019\/04\/c25b8cdbd0644c4a554faab230d7a53e.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<h4>1. Automatikus Rejtett NAT<\/h4>\n<p>\nAlap\u00e9rtelmez\u00e9s szerint ez a Rejtett. Azaz ebben az esetben a h\u00e1l\u00f3zatunk \u201eelrejt\u0151zik\u201d egy bizonyos nyilv\u00e1nos IP-c\u00edm m\u00f6g\u00f6tt. Az IP-c\u00edm az \u00e1tj\u00e1r\u00f3 k\u00fcls\u0151 interf\u00e9sz\u00e9r\u0151l is sz\u00e1rmazhat, vagy meg lehet adni egy m\u00e1sikat. Ezt a NAT t\u00edpust gyakran dinamikusnak is nevezik, vagy <b>sok-az-egyhez<\/b>, mivel t\u00f6bb bels\u0151 c\u00edm egy k\u00fcls\u0151 c\u00edmre van \u00e1tkonfigur\u00e1lva. Term\u00e9szetesen ez lehets\u00e9ges k\u00fcl\u00f6nb\u00f6z\u0151 portok haszn\u00e1lat\u00e1val az \u00e1tkonfigur\u00e1l\u00e1s sor\u00e1n. A Hide NAT csak egy ir\u00e1nyban m\u0171k\u00f6dik (bentr\u0151l kifel\u00e9), \u00e9s t\u00f6k\u00e9letesen alkalmas helyi h\u00e1l\u00f3zatokhoz, amikor egyszer\u0171en csak internetkapcsolatot kell biztos\u00edtani. Ha a forgalmat a k\u00fcls\u0151 h\u00e1l\u00f3zat kezdem\u00e9nyezi, a NAT term\u00e9szetesen nem fog m\u0171k\u00f6dni. Teh\u00e1t ez egyfajta extra v\u00e9delmet ny\u00fajt a bels\u0151 h\u00e1l\u00f3zatok sz\u00e1m\u00e1ra.<\/p>\n<h4>2. Automatikus Statikus NAT<\/h4>\n<p>\nA Hide NAT mind szempontb\u00f3l j\u00f3, de lehet, hogy hozz\u00e1f\u00e9r\u00e9st kell biztos\u00edtani a k\u00fcls\u0151 h\u00e1l\u00f3zatb\u00f3l valamilyen bels\u0151 szerverhez. P\u00e9ld\u00e1ul egy DMZ-szerverhez, ahogyan a p\u00e9ld\u00e1nkban is. Ebben az esetben a Statikus NAT seg\u00edthet. Ez is meglehet\u0151sen k\u00f6nnyen be\u00e1ll\u00edthat\u00f3. El\u00e9g, ha az objektum tulajdons\u00e1gaiban megv\u00e1ltoztatja az \u00e1tkonfigur\u00e1l\u00e1s m\u00f3dj\u00e1t Statikusra, \u00e9s megadja a nyilv\u00e1nos IP-c\u00edmet, amelyet a NAT haszn\u00e1lni fog (l\u00e1sd a fenti k\u00e9pet). Teh\u00e1t, ha valaki a k\u00fcls\u0151 h\u00e1l\u00f3zatb\u00f3l erre a c\u00edmre l\u00e9p (b\u00e1rmely porton!), akkor a k\u00e9r\u00e9s \u00e1tir\u00e1ny\u00edt\u00e1sra ker\u00fcl a m\u00e1r bels\u0151 IP-c\u00edmmel rendelkez\u0151 szerverre. Ezenk\u00edv\u00fcl, ha maga a szerver internetre l\u00e9p, akkor az IP-c\u00edme is megv\u00e1ltozik arra a c\u00edmre, amelyet megadtunk. Ez teh\u00e1t NAT mindk\u00e9t ir\u00e1nyban. Ezt m\u00e9g \u00fagy is nevezik, <b>egy az egyben<\/b> \u00e9s n\u00e9ha nyilv\u00e1nos szerverekhez haszn\u00e1lj\u00e1k. Mi\u00e9rt \u201en\u00e9ha\u201d? Mert van egy nagy h\u00e1tr\u00e1nya \u2014 a nyilv\u00e1nos IP-c\u00edm teljesen elfoglalt (minden port). Nem lehet egy nyilv\u00e1nos c\u00edmet t\u00f6bb k\u00fcl\u00f6nb\u00f6z\u0151 bels\u0151 szerverhez (k\u00fcl\u00f6nb\u00f6z\u0151 portokkal) haszn\u00e1lni. P\u00e9ld\u00e1ul HTTP, FTP, SSH, SMTP stb. E probl\u00e9m\u00e1t a K\u00e9zi NAT megoldhatja.<\/p>\n<h3>Manu\u00e1lis NAT<\/h3>\n<p>\nA K\u00e9zi NAT saj\u00e1toss\u00e1ga, hogy \u00f6n\u00e1ll\u00f3an kell l\u00e9trehozni az \u00e1tkonfigur\u00e1l\u00e1s szab\u00e1lyait. Ugyanabban a NAT f\u00fcl alatt az Access Control Policy men\u00fcben. A K\u00e9zi NAT lehet\u0151v\u00e9 teszi, hogy bonyolultabb \u00e1tkonfigur\u00e1l\u00e1si szab\u00e1lyokat hozzon l\u00e9tre. Az al\u00e1bbi mez\u0151k \u00e1llnak rendelkez\u00e9sre: Eredeti forr\u00e1s, Eredeti c\u00e9l, Eredeti szolg\u00e1ltat\u00e1sok, \u00c1tj\u00e1r\u00e1s als\u00f3 forr\u00e1s, \u00c1tj\u00e1r\u00e1s alatti c\u00e9l, \u00c1tj\u00e1r\u00e1s alatti szolg\u00e1ltat\u00e1sok. <\/p>\n<p><img decoding=\"async\" alt=\"8. Check Point Kezd\u0151 \u00fatmutat\u00f3 R80.20. NAT\" src=\"\/wp-content\/uploads\/2019\/04\/7ed3a4786dd581312ca2c221e003f290.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nItt szint\u00e9n k\u00e9t t\u00edpus\u00fa NAT lehets\u00e9ges \u2014 Hide \u00e9s Statikus.<\/p>\n<h4>1. K\u00e9zi Elrejtett NAT<\/h4>\n<p>\nA Hide NAT ebben az esetben k\u00fcl\u00f6nb\u00f6z\u0151 helyzetekben haszn\u00e1lhat\u00f3. N\u00e9h\u00e1ny p\u00e9lda:<\/p>\n<ol>\n<li>Amikor egy adott forr\u00e1shoz fordul a helyi h\u00e1l\u00f3zatb\u00f3l, szeretne m\u00e1s c\u00edmet haszn\u00e1lni az \u00e1tkonfigur\u00e1l\u00e1shoz (elt\u00e9r\u0151en att\u00f3l, amelyet minden m\u00e1s esetben haszn\u00e1l).<\/li>\n<li>A helyi h\u00e1l\u00f3zaton hatalmas sz\u00e1m\u00fa sz\u00e1m\u00edt\u00f3g\u00e9p tal\u00e1lhat\u00f3. Az Automatic Hide NAT nem lesz megfelel\u0151, mivel ilyen be\u00e1ll\u00edt\u00e1ssal csak egy nyilv\u00e1nos IP-c\u00edm \u00e1ll\u00edthat\u00f3 be, amely m\u00f6g\u00f6tt a sz\u00e1m\u00edt\u00f3g\u00e9pek \"elb\u00fajhatnak\". A portok a NAT ford\u00edt\u00e1shoz egyszer\u0171en nem elegend\u0151ek. Mint tudjuk, ebb\u0151l kicsit t\u00f6bb mint 65 ezer van. Ezenk\u00edv\u00fcl minden sz\u00e1m\u00edt\u00f3g\u00e9p t\u00f6bb sz\u00e1z munkamenetet gener\u00e1lhat. A Manual Hide NAT lehet\u0151v\u00e9 teszi, hogy a Translated Source mez\u0151ben nyilv\u00e1nos c\u00edmek csoportja \u00e1lljon be. <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/hu\/lir\/ipv4\/\"   title=\"IP-c\u00edmek\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"801\">IP-c\u00edmek<\/a>. Ezzel n\u00f6velve a lehets\u00e9ges NAT-ford\u00edt\u00e1sok sz\u00e1m\u00e1t.<\/li>\n<\/ol>\n<p><\/p>\n<h4>2. Manual Static NAT<\/h4>\n<p>\nA Static NAT sokkal gyakrabban haszn\u00e1latos a ford\u00edt\u00e1si szab\u00e1lyok manu\u00e1lis l\u00e9trehoz\u00e1sakor. Klasszikus p\u00e9lda a porttov\u00e1bb\u00edt\u00e1s. Az eset, amikor a k\u00fcls\u0151 h\u00e1l\u00f3zat egy nyilv\u00e1nos IP-c\u00edmre hivatkozik (amely a \u00e1tj\u00e1r\u00f3hoz tartozhat) egy bizonyos porton, \u00e9s a k\u00e9r\u00e9s \u00e1tir\u00e1ny\u00edt\u00e1sra ker\u00fcl egy bels\u0151 er\u0151forr\u00e1sra. A laborat\u00f3riumi munk\u00e1nk sor\u00e1n az 80 portot a DMZ szerverhez fogjuk tov\u00e1bb\u00edtani.<\/p>\n<h3>Oktat\u00f3vide\u00f3<\/h3>\n<p>\n<center><div class=\"youtube-placeholder\" data-id=\"HXN8VDAM7yY\" onclick=\"loadVideo(this)\">\r\n        <img decoding=\"async\" src=\"https:\/\/img.youtube.com\/vi\/HXN8VDAM7yY\/hqdefault.jpg\" alt=\"Vide\u00f3 lej\u00e1tsz\u00e1sa\" loading=\"lazy\" width=\"480\" height=\"360\" style=\"width:100%;height:auto;\">\r\n        <div class=\"play-button\"><\/div>\r\n    <\/div><\/center><br \/>\nMaradjatok vel\u00fcnk tov\u00e1bbi inform\u00e1ci\u00f3k\u00e9rt, \u00e9s csatlakozzatok a <noindex><a rel=\"nofollow\" href=\"https:\/\/www.youtube.com\/channel\/UCKOESE8nBWQPuQmi994_YMA\">YouTube csatorn\u00e1nkhoz<\/a><\/noindex> A v\u00e9g\u00e9n \u00e9n, egy egyszer\u0171 szellemi munk\u00e1s, v\u00e1ratlanul h\u0151s lettem ennek a men\u0151 csatorn\u00e1nak a t\u00f6rt\u00e9net\u00e9ben!<br \/>\n<br \/>Forr\u00e1s: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/tssolution\/blog\/448114\/\">habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0414\u043e\u0431\u0440\u043e \u043f\u043e\u0436\u0430\u043b\u043e\u0432\u0430\u0442\u044c \u043d\u0430 8-\u0439 \u0443\u0440\u043e\u043a. \u0423\u0440\u043e\u043a \u043e\u0447\u0435\u043d\u044c \u0432\u0430\u0436\u043d\u044b\u0439, \u0442.\u043a. \u043f\u043e \u0435\u0433\u043e \u0437\u0430\u0432\u0435\u0440\u0448\u0435\u043d\u0438\u044e \u0432\u044b \u0443\u0436\u0435 \u0441\u043c\u043e\u0436\u0435\u0442\u0435 \u043d\u0430\u0441\u0442\u0440\u043e\u0438\u0442\u044c \u0432\u044b\u0445\u043e\u0434 \u0432 \u0438\u043d\u0442\u0435\u0440\u043d\u0435\u0442 \u0434\u043b\u044f \u0432\u0430\u0448\u0438\u0445 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u0439! \u041d\u0430\u0434\u043e \u043f\u0440\u0438\u0437\u043d\u0430\u0442\u044c, \u0447\u0442\u043e \u043c\u043d\u043e\u0433\u0438\u0435 \u043d\u0430 \u044d\u0442\u043e\u043c \u043d\u0430\u0441\u0442\u0440\u043e\u0439\u043a\u0443 \u0438 \u0437\u0430\u043a\u0430\u043d\u0447\u0438\u0432\u0430\u044e\u0442 \ud83d\ude42 \u041d\u043e \u043c\u044b \u043d\u0435 \u0438\u0437 \u0438\u0445 \u0447\u0438\u0441\u043b\u0430! \u0418 \u0443 \u043d\u0430\u0441 \u0435\u0449\u0435 \u043c\u043d\u043e\u0433\u043e \u0438\u043d\u0442\u0435\u0440\u0435\u0441\u043d\u043e\u0433\u043e \u0432\u043f\u0435\u0440\u0435\u0434\u0438. \u0410 \u0442\u0435\u043f\u0435\u0440\u044c \u043a \u0442\u0435\u043c\u0435 \u043d\u0430\u0448\u0435\u0433\u043e \u0443\u0440\u043e\u043a\u0430. \u041a\u0430\u043a \u0432\u044b \u0443\u0436\u0435 \u043d\u0430\u0432\u0435\u0440\u043d\u043e [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":23547,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-31629","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-administrirovanie"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0414\u043e\u0431\u0440\u043e \u043f\u043e\u0436\u0430\u043b\u043e\u0432\u0430\u0442\u044c \u043d\u0430 8-\u0439 \u0443\u0440\u043e\u043a.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Yuri Gagarin\"\/>\n\t<link rel=\"canonical\" href=\"https:\/\/prohoster.info\/hu\/blog\/administrirovanie\/8-check-point-getting-started-r80-20-nat\" \/>\n\t\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 5.0.3\" \/>\n\t\t<meta property=\"og:locale\" content=\"hu_HU\" \/>\n\t\t<meta property=\"og:site_name\" content=\"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"\ud83e\udd478. 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