{"id":2122,"date":"2026-06-17T07:02:02","date_gmt":"2026-06-17T07:02:02","guid":{"rendered":"https:\/\/www.hostx.ro\/kb\/cum-securizez-un-server-open-dns-recursiv\/"},"modified":"2026-07-25T23:42:24","modified_gmt":"2026-07-25T21:42:24","password":"","slug":"cum-securizez-un-server-open-dns-recursiv","status":"publish","type":"docs","link":"https:\/\/www.hostx.ro\/kb\/cum-securizez-un-server-open-dns-recursiv\/","title":{"rendered":"Cum securizez un server DNS deschis (recursiv)?"},"content":{"rendered":"

Un server DNS recursiv deschis poate fi folosit abuziv \u00een atacuri de amplificare DDoS. V\u0103 recomand\u0103m s\u0103 configura\u021bi serverul DNS astfel \u00eenc\u00e2t s\u0103 nu r\u0103spund\u0103 la interog\u0103ri recursive venite din exterior.<\/p>\n

O interogare recursiv\u0103 apare atunci c\u00e2nd serverul DNS este \u00eentrebat despre un domeniu pentru care nu este autoritar (de exemplu, dac\u0103 interoga\u021bi serverul dvs. pentru domeniul yahoo.com).<\/p>\n

1. Pentru serverele Linux<\/strong> care ruleaz\u0103 BIND<\/strong>, edita\u021bi fi\u0219ierul \/etc\/named.conf<\/strong> (face\u021bi o copie de rezerv\u0103 \u00eenainte de modific\u0103ri).<\/p>\n

\u00cen exemplul de mai jos, BIND este configurat s\u0103 permit\u0103 interog\u0103ri recursive doar de la 127.0.0.1<\/code>. Pute\u021bi edita aceste linii pentru a folosi doar subre\u021belele proprii, de \u00eencredere:<\/p>\n

options {\n    recursion yes;\n    allow-recursion { 127.0.0.1\/32; };\n    allow-query-cache { 127.0.0.1\/32; };\n};<\/code><\/pre>\n
Dup\u0103 modific\u0103ri, reporni\u021bi BIND (pe sistemele moderne cu systemd<\/strong>):<\/p>\n
systemctl restart named<\/code><\/pre>\n
2. Pentru servere Windows<\/strong>, recursivitatea trebuie dezactivat\u0103 dintr-o simpl\u0103 bif\u0103 \u00een set\u0103rile de configurare ale serverului DNS (din Server Manager \u2192 DNS \u2192 Properties \u2192 Advanced<\/strong>).<\/p>\n","protected":false},"excerpt":{"rendered":"
Un server DNS recursiv deschis poate fi folosit abuziv \u00een atacuri de amplificare DDoS. V\u0103 recomand\u0103m s\u0103 configura\u021bi serverul DNS astfel \u00eenc\u00e2t s\u0103 nu r\u0103spund\u0103 la interog\u0103ri recursive venite din exterior. O interogare recursiv\u0103 apare atunci c\u00e2nd serverul DNS este \u00eentrebat despre un domeniu pentru care nu este autoritar (de exemplu, dac\u0103 interoga\u021bi serverul dvs. … Cite\u0219te mai mult<\/a><\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"inline_featured_image":false,"whmcs_kb_id":1405,"footnotes":""},"doc_category":[203],"doc_tag":[327,263,278,289,245],"class_list":["post-2122","docs","type-docs","status-publish","hentry","doc_category-securitate-administrare","doc_tag-configurare-server","doc_tag-dns","doc_tag-firewall","doc_tag-linux","doc_tag-securitate"],"year_month":"2026-11","word_count":161,"total_views":"22","reactions":{"happy":"0","normal":"0","sad":"0"},"author_info":{"name":"Adrian Firican","author_nicename":"techeditor1","author_url":"https:\/\/www.hostx.ro\/kb\/author\/techeditor1\/"},"doc_category_info":[{"term_name":"Securitate","term_url":"https:\/\/www.hostx.ro\/kb\/docs-category\/securitate-administrare\/"}],"doc_tag_info":[{"term_name":"configurare server","term_url":"https:\/\/www.hostx.ro\/kb\/docs-tag\/configurare-server\/"},{"term_name":"DNS","term_url":"https:\/\/www.hostx.ro\/kb\/docs-tag\/dns\/"},{"term_name":"firewall","term_url":"https:\/\/www.hostx.ro\/kb\/docs-tag\/firewall\/"},{"term_name":"Linux","term_url":"https:\/\/www.hostx.ro\/kb\/docs-tag\/linux\/"},{"term_name":"securitate","term_url":"https:\/\/www.hostx.ro\/kb\/docs-tag\/securitate\/"}],"yoast_head":"\nSecurizare Server DNS Recursiv - Ghid Complet - Centrul de suport HostX<\/title>\n<meta name=\"description\" content=\"Securizeaz\u0103 serverul DNS recursiv deschis \u0219i previne atacurile DDoS de amplificare. Configurare BIND \u0219i Windows cu recomand\u0103ri practice.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.hostx.ro\/kb\/cum-securizez-un-server-open-dns-recursiv\/\" \/>\n<meta property=\"og:locale\" content=\"ro_RO\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Securizare Server DNS Recursiv - Ghid Complet - Centrul de suport HostX\" \/>\n<meta property=\"og:description\" content=\"Securizeaz\u0103 serverul DNS recursiv deschis \u0219i previne atacurile DDoS de amplificare. 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