{"id":2433,"date":"2021-09-28T13:43:39","date_gmt":"2021-09-28T13:43:39","guid":{"rendered":"https:\/\/ownwebservers.com\/kb\/?p=2433"},"modified":"2021-09-28T13:43:39","modified_gmt":"2021-09-28T13:43:39","slug":"securing-ntp-linux-only","status":"publish","type":"post","link":"https:\/\/ownwebservers.com\/kb\/securing-ntp-linux-only\/","title":{"rendered":"Securing NTP (Linux Only)"},"content":{"rendered":"

NTP is used for ensuring the time on your dedicated server is accurate Some configuration of this software cause it to be vulnerable to being absued to conduct DDoS attacks. To no longer it get abused we suggest for fixing the server’s configuration.<\/p>\n

to prevent abuse:<\/p>\n

1. Open your ntp.conf file (generally in\/etc\/ntp.conf).
\n2. Remove any existing lines that being with ‘restrict’
\n3. Add the following four lines to the beginning of the file.
\n5. restrict -6 default kod limited nomodify notrapp nopeer noquery
\n6. restrict 127.0.0.1
\n7. restrict -6 ::1
\n8. Restart your NTP server with ‘service ntpd rrestart ‘ or ‘service ntp restart’<\/p>\n","protected":false},"excerpt":{"rendered":"

NTP is used for ensuring the time on your dedicated server is accurate Some configuration of this software cause it to be vulnerable to being absued to conduct DDoS attacks. To no longer it get abused we suggest for fixing the server’s configuration. to prevent abuse: 1. Open your ntp.conf file (generally in\/etc\/ntp.conf). 2. Remove […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16,23],"tags":[],"class_list":["post-2433","post","type-post","status-publish","format-standard","hentry","category-dedicated-server","category-tutorials"],"yoast_head":"\nSecuring NTP (Linux Only) - OWS KB<\/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:\/\/ownwebservers.com\/kb\/securing-ntp-linux-only\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Securing NTP (Linux Only) - OWS KB\" \/>\n<meta property=\"og:description\" content=\"NTP is used for ensuring the time on your dedicated server is accurate Some configuration of this software cause it to be vulnerable to being absued to conduct DDoS attacks. To no longer it get abused we suggest for fixing the server’s configuration. to prevent abuse: 1. Open your ntp.conf file (generally in\/etc\/ntp.conf). 2. Remove […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/ownwebservers.com\/kb\/securing-ntp-linux-only\/\" \/>\n<meta property=\"og:site_name\" content=\"OWS KB\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/OWN-WEB-SERVERS-107052961577434\" \/>\n<meta property=\"article:published_time\" content=\"2021-09-28T13:43:39+00:00\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@OwnWebservers\" \/>\n<meta name=\"twitter:site\" content=\"@OwnWebservers\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/ownwebservers.com\\\/kb\\\/securing-ntp-linux-only\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/ownwebservers.com\\\/kb\\\/securing-ntp-linux-only\\\/\"},\"author\":{\"name\":\"admin\",\"@id\":\"https:\\\/\\\/ownwebservers.com\\\/kb\\\/#\\\/schema\\\/person\\\/4a40fe3fe17a08ddd1d7c113668e75f2\"},\"headline\":\"Securing NTP (Linux Only)\",\"datePublished\":\"2021-09-28T13:43:39+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/ownwebservers.com\\\/kb\\\/securing-ntp-linux-only\\\/\"},\"wordCount\":104,\"publisher\":{\"@id\":\"https:\\\/\\\/ownwebservers.com\\\/kb\\\/#organization\"},\"articleSection\":[\"Dedicated Server\",\"Tutorials\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/ownwebservers.com\\\/kb\\\/securing-ntp-linux-only\\\/\",\"url\":\"https:\\\/\\\/ownwebservers.com\\\/kb\\\/securing-ntp-linux-only\\\/\",\"name\":\"Securing NTP (Linux Only) - OWS KB\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/ownwebservers.com\\\/kb\\\/#website\"},\"datePublished\":\"2021-09-28T13:43:39+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/ownwebservers.com\\\/kb\\\/securing-ntp-linux-only\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/ownwebservers.com\\\/kb\\\/securing-ntp-linux-only\\\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/ownwebservers.com\\\/kb\\\/securing-ntp-linux-only\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/ownwebservers.com\\\/kb\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Securing NTP (Linux Only)\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/ownwebservers.com\\\/kb\\\/#website\",\"url\":\"https:\\\/\\\/ownwebservers.com\\\/kb\\\/\",\"name\":\"OWS KB\",\"description\":\"\",\"publisher\":{\"@id\":\"https:\\\/\\\/ownwebservers.com\\\/kb\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/ownwebservers.com\\\/kb\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/ownwebservers.com\\\/kb\\\/#organization\",\"name\":\"Own Web Servers\",\"url\":\"https:\\\/\\\/ownwebservers.com\\\/kb\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/ownwebservers.com\\\/kb\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/ownwebservers.com\\\/kb\\\/wp-content\\\/uploads\\\/2026\\\/07\\\/OWS-Logo-with-punchline-front-scaled.png\",\"contentUrl\":\"https:\\\/\\\/ownwebservers.com\\\/kb\\\/wp-content\\\/uploads\\\/2026\\\/07\\\/OWS-Logo-with-punchline-front-scaled.png\",\"width\":2560,\"height\":994,\"caption\":\"Own Web Servers\"},\"image\":{\"@id\":\"https:\\\/\\\/ownwebservers.com\\\/kb\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.facebook.com\\\/OWN-WEB-SERVERS-107052961577434\",\"https:\\\/\\\/x.com\\\/OwnWebservers\"]},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/ownwebservers.com\\\/kb\\\/#\\\/schema\\\/person\\\/4a40fe3fe17a08ddd1d7c113668e75f2\",\"name\":\"admin\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/ba5db5841d48bd7517bb2583e13983e6d2fa56a4099a0b3c61ad2daefc321303?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/ba5db5841d48bd7517bb2583e13983e6d2fa56a4099a0b3c61ad2daefc321303?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/ba5db5841d48bd7517bb2583e13983e6d2fa56a4099a0b3c61ad2daefc321303?s=96&d=mm&r=g\",\"caption\":\"admin\"},\"sameAs\":[\"https:\\\/\\\/ownwebservers.com\\\/kb\"]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Securing NTP (Linux Only) - OWS KB","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/ownwebservers.com\/kb\/securing-ntp-linux-only\/","og_locale":"en_US","og_type":"article","og_title":"Securing NTP (Linux Only) - OWS KB","og_description":"NTP is used for ensuring the time on your dedicated server is accurate Some configuration of this software cause it to be vulnerable to being absued to conduct DDoS attacks. To no longer it get abused we suggest for fixing the server’s configuration. to prevent abuse: 1. Open your ntp.conf file (generally in\/etc\/ntp.conf). 2. Remove […]","og_url":"https:\/\/ownwebservers.com\/kb\/securing-ntp-linux-only\/","og_site_name":"OWS KB","article_publisher":"https:\/\/www.facebook.com\/OWN-WEB-SERVERS-107052961577434","article_published_time":"2021-09-28T13:43:39+00:00","author":"admin","twitter_card":"summary_large_image","twitter_creator":"@OwnWebservers","twitter_site":"@OwnWebservers","twitter_misc":{"Written by":"admin","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/ownwebservers.com\/kb\/securing-ntp-linux-only\/#article","isPartOf":{"@id":"https:\/\/ownwebservers.com\/kb\/securing-ntp-linux-only\/"},"author":{"name":"admin","@id":"https:\/\/ownwebservers.com\/kb\/#\/schema\/person\/4a40fe3fe17a08ddd1d7c113668e75f2"},"headline":"Securing NTP (Linux Only)","datePublished":"2021-09-28T13:43:39+00:00","mainEntityOfPage":{"@id":"https:\/\/ownwebservers.com\/kb\/securing-ntp-linux-only\/"},"wordCount":104,"publisher":{"@id":"https:\/\/ownwebservers.com\/kb\/#organization"},"articleSection":["Dedicated Server","Tutorials"],"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/ownwebservers.com\/kb\/securing-ntp-linux-only\/","url":"https:\/\/ownwebservers.com\/kb\/securing-ntp-linux-only\/","name":"Securing NTP (Linux Only) - OWS KB","isPartOf":{"@id":"https:\/\/ownwebservers.com\/kb\/#website"},"datePublished":"2021-09-28T13:43:39+00:00","breadcrumb":{"@id":"https:\/\/ownwebservers.com\/kb\/securing-ntp-linux-only\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/ownwebservers.com\/kb\/securing-ntp-linux-only\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/ownwebservers.com\/kb\/securing-ntp-linux-only\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/ownwebservers.com\/kb\/"},{"@type":"ListItem","position":2,"name":"Securing NTP (Linux Only)"}]},{"@type":"WebSite","@id":"https:\/\/ownwebservers.com\/kb\/#website","url":"https:\/\/ownwebservers.com\/kb\/","name":"OWS KB","description":"","publisher":{"@id":"https:\/\/ownwebservers.com\/kb\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/ownwebservers.com\/kb\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/ownwebservers.com\/kb\/#organization","name":"Own Web Servers","url":"https:\/\/ownwebservers.com\/kb\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/ownwebservers.com\/kb\/#\/schema\/logo\/image\/","url":"https:\/\/ownwebservers.com\/kb\/wp-content\/uploads\/2026\/07\/OWS-Logo-with-punchline-front-scaled.png","contentUrl":"https:\/\/ownwebservers.com\/kb\/wp-content\/uploads\/2026\/07\/OWS-Logo-with-punchline-front-scaled.png","width":2560,"height":994,"caption":"Own Web Servers"},"image":{"@id":"https:\/\/ownwebservers.com\/kb\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/OWN-WEB-SERVERS-107052961577434","https:\/\/x.com\/OwnWebservers"]},{"@type":"Person","@id":"https:\/\/ownwebservers.com\/kb\/#\/schema\/person\/4a40fe3fe17a08ddd1d7c113668e75f2","name":"admin","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/secure.gravatar.com\/avatar\/ba5db5841d48bd7517bb2583e13983e6d2fa56a4099a0b3c61ad2daefc321303?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/ba5db5841d48bd7517bb2583e13983e6d2fa56a4099a0b3c61ad2daefc321303?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/ba5db5841d48bd7517bb2583e13983e6d2fa56a4099a0b3c61ad2daefc321303?s=96&d=mm&r=g","caption":"admin"},"sameAs":["https:\/\/ownwebservers.com\/kb"]}]}},"_links":{"self":[{"href":"https:\/\/ownwebservers.com\/kb\/wp-json\/wp\/v2\/posts\/2433","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ownwebservers.com\/kb\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ownwebservers.com\/kb\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ownwebservers.com\/kb\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ownwebservers.com\/kb\/wp-json\/wp\/v2\/comments?post=2433"}],"version-history":[{"count":1,"href":"https:\/\/ownwebservers.com\/kb\/wp-json\/wp\/v2\/posts\/2433\/revisions"}],"predecessor-version":[{"id":2434,"href":"https:\/\/ownwebservers.com\/kb\/wp-json\/wp\/v2\/posts\/2433\/revisions\/2434"}],"wp:attachment":[{"href":"https:\/\/ownwebservers.com\/kb\/wp-json\/wp\/v2\/media?parent=2433"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ownwebservers.com\/kb\/wp-json\/wp\/v2\/categories?post=2433"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ownwebservers.com\/kb\/wp-json\/wp\/v2\/tags?post=2433"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}