{"id":56964,"date":"2025-02-10T11:10:11","date_gmt":"2025-02-10T03:10:11","guid":{"rendered":"https:\/\/www.crazydomains.com\/learn\/?p=56964"},"modified":"2025-02-07T20:13:29","modified_gmt":"2025-02-07T12:13:29","slug":"what-is-dns-filtering","status":"publish","type":"post","link":"https:\/\/www.crazydomains.com.au\/learn\/what-is-dns-filtering\/","title":{"rendered":"Understanding The Importance Of DNS Filtering For Enhanced Online Security"},"content":{"rendered":"<table>\n<tbody>\n<tr>\n<td>DNS filtering blocks access to malicious or unauthorised websites by checking DNS requests against a list of allowed or blocked domains, enhancing cybersecurity and preventing threats like malware and phishing.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>W<span class=\"Editor_t__not_edited__WuRP8\">ith incidents of\u00a0<\/span><span class=\"Editor_t__not_edited_long__JuNNx\">malware, phishing attacks, and ransomware on the rise,\u00a0<span class=\"Editor_t__added__LtuNJ\">safeguarding<\/span><span class=\"Editor_t__not_edited__WuRP8\">\u00a0sensitive information and\u00a0<\/span><span class=\"Editor_t__added__LtuNJ\">providing<\/span>\u00a0a safe browsing experience\u00a0<span class=\"Editor_t__added__LtuNJ\">are<\/span>\u00a0<span class=\"Editor_t__added__LtuNJ\">crucial<\/span>\u00a0<span class=\"Editor_t__added__LtuNJ\">now\u00a0<\/span><span class=\"Editor_t__not_edited__WuRP8\">more\u00a0<\/span>than ever.<\/span><\/p>\n<p><span class=\"Editor_t__not_edited_long__JuNNx\"><span class=\"Editor_t__not_edited__WuRP8\">DNS<\/span>\u00a0filtering is a simple yet powerful solution to prevent such attacks.\u00a0But\u00a0what is DNS filtering, and why is it essential\u00a0<\/span>for online security<span class=\"Editor_t__not_edited__WuRP8\">?<\/span>\u00a0This article lists\u00a0how\u00a0DNS filtering can protect us from evolving cyber risks.<\/p>\n<h2>What is DNS Filtering?<\/h2>\n<p>Domain Name System (DNS)\u00a0<span class=\"Editor_t__not_edited_long__JuNNx\">filtering is a security technique prohibiting\u00a0<\/span><span class=\"Editor_t__not_edited__WuRP8\">users from accessing\u00a0malicious and unauthorised\u00a0<\/span><span class=\"Editor_t__added__LtuNJ\">websites.<\/span><\/p>\n<h3>Domain Name System<\/h3>\n<p><span id=\"input-sentence~3\">Every\u00a0website has\u00a0an\u00a0IP address\u00a0by\u00a0which\u00a0other computers can\u00a0locate it. However, we cannot remember the numbers for all the websites we visit.<\/span><span id=\"input-sentence~4\">\u00a0So, the DNS changes the domain name into an IP address that a web server recognises.\u00a0<\/span><\/p>\n<ul>\n<li aria-level=\"1\">DNS attacks cause\u00a0<a href=\"https:\/\/learn.g2.com\/dns-security-statistics\" target=\"_blank\" rel=\"noopener\">application outages in<\/a>\u00a0<a href=\"https:\/\/learn.g2.com\/dns-security-statistics\" target=\"_blank\" rel=\"noopener\">82%\u00a0<\/a>of businesses\u00a0and\u00a0<a href=\"https:\/\/learn.g2.com\/dns-security-statistics\" target=\"_blank\" rel=\"noopener\">data theft in 29%<\/a>\u00a0of businesses.<\/li>\n<li aria-level=\"1\">A DNS attack can cost around\u00a0<a href=\"https:\/\/learn.g2.com\/dns-security-statistics\" target=\"_blank\" rel=\"noopener\">$1.1 million<\/a>\u00a0for the business to recover from it.<\/li>\n<li aria-level=\"1\">Around\u00a0<a href=\"https:\/\/efficientip.com\/blog\/how-to-secure-anywhere-networking-with-dns-2022-threat-report-highlights\/\" target=\"_blank\" rel=\"noopener\">88% of organisations\u00a0<\/a>across the globe suffer from multiple DNS attacks every year.<\/li>\n<\/ul>\n<p>These numbers demonstrate that a DNS check is important to prevent such attacks. DNS management<a href=\"https:\/\/www.crazydomains.com\/help\/article\/crazy-domains-dns-management\" target=\"_blank\" rel=\"noopener\">\u00a0<\/a>is a system that prevents unauthorised access to, management, and modification of DNS records.<\/p>\n<table style=\"border-collapse: collapse; width: 100%;\">\n<tbody>\n<tr>\n<td style=\"width: 100%;\"><span class=\"Editor_t__not_edited__WuRP8\"><span style=\"color: #008080;\"><strong>Also Read:<\/strong><\/span>\u00a0<a href=\"https:\/\/www.crazydomains.com.au\/learn\/how-to-do-dns-check\/\" target=\"_blank\" rel=\"noopener\">Why DNS Check Is Important and How to Do It<\/a><\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>How Does DNS Filtering Work?<\/h3>\n<p>DNS filtering sends our\u00a0<span class=\"Editor_t__not_edited__WuRP8\">DNS requests through a<\/span><span class=\"Editor_t__added__LtuNJ\">\u00a0<\/span><span class=\"Editor_t__not_edited__WuRP8\">filtering system\u00a0<\/span><span class=\"Editor_t__added__LtuNJ\">that<\/span>\u00a0compares the\u00a0<span class=\"Editor_t__not_edited_long__JuNNx\">requested domain with a blocked or allowed list of domains.\u00a0<\/span><\/p>\n<ul>\n<li>If the requested domain is on the allowed list, the DNS filtering system resolves the domain and provides the corresponding IP address.<\/li>\n<li>If the domain is not found on the list or is present in the blocked list of websites, the DNS filtering solution blocks access to the website.<\/li>\n<\/ul>\n<table style=\"border-collapse: collapse; width: 100%;\">\n<tbody>\n<tr>\n<td style=\"width: 100%;\"><span style=\"color: #008080;\"><strong>Also Read:<\/strong><\/span>\u00a0<a href=\"https:\/\/www.crazydomains.com.au\/help\/article\/how-to-manage-dns-for-hosting-account\" target=\"_blank\" rel=\"noopener\">How to Manage DNS for Hosting Account<\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>The Importance Of DNS Filtering For Enhanced Online Security<\/h2>\n<p>DNS filtering enhances cybersecurity and creates safer online environments. Here is how they do it.<\/p>\n<h3>Blocking Malicious Websites<\/h3>\n<p><span class=\"Editor_t__not_edited__WuRP8\">A website\u00a0with\u00a0<\/span><span class=\"Editor_t__not_edited__WuRP8\"><a href=\"https:\/\/www.dnsfilter.com\/blog\/how-to-prevent-malware-attacks\" target=\"_blank\" rel=\"noopener\">malware<\/a>\u00a0<\/span><span class=\"Editor_t__added__LtuNJ\">will<\/span><span class=\"Editor_t__not_edited__WuRP8\">\u00a0either attempt to\u00a0<\/span><span class=\"Editor_t__added__LtuNJ\">deceive<\/span><span class=\"Editor_t__not_edited__WuRP8\">\u00a0users into downloading\u00a0it or automatically download the malicious software when the web page loads.\u00a0<\/span><\/p>\n<p>When businesses implement DNS filtering, it acts as a frontline defense against malware and prevents these\u00a0attacks by blocking users from accessing malicious domains. The DNS filtering reduces the\u00a0<span class=\"Editor_t__added__LtuNJ\">chances<\/span><span class=\"Editor_t__not_edited__WuRP8\">\u00a0of malware\u00a0<\/span><span class=\"Editor_t__added__LtuNJ\">infection,<\/span><span class=\"Editor_t__not_edited__WuRP8\">\u00a0compromising the\u00a0<\/span><span class=\"Editor_t__added__LtuNJ\">system&#8217;s<\/span>\u00a0<span class=\"Editor_t__added__LtuNJ\">security<\/span><span class=\"Editor_t__not_edited__WuRP8\">.<\/span><\/p>\n<h3>Blocking Phishing Websites<\/h3>\n<p><span class=\"Editor_t__not_edited_long__JuNNx\">A phishing website mimics\u00a0<\/span><span class=\"Editor_t__not_edited__WuRP8\">legitimate\u00a0<\/span><span class=\"Editor_t__added__LtuNJ\">domains<\/span><span class=\"Editor_t__not_edited__WuRP8\">\u00a0and\u00a0<\/span><span class=\"Editor_t__added__LtuNJ\">deceives<\/span><span class=\"Editor_t__not_edited_long__JuNNx\">\u00a0most users to reveal sensitive information such as login credentials and personal data to the\u00a0<\/span><span class=\"Editor_t__added__LtuNJ\">attacker.\u00a0<\/span><span class=\"Editor_t__not_edited_long__JuNNx\">DNS filtering identifies and blocks<\/span><span class=\"Editor_t__added__LtuNJ\">\u00a0<\/span><span class=\"Editor_t__not_edited_long__JuNNx\">access to known phishing domains, thus protecting users\u00a0<\/span><span class=\"Editor_t__not_edited__WuRP8\">from falling\u00a0<\/span><span class=\"Editor_t__added__LtuNJ\">into<\/span>\u00a0<span class=\"Editor_t__not_edited_long__JuNNx\">fraudulent schemes and other cyber threats.\u00a0<\/span><\/p>\n<ul>\n<li><span class=\"Editor_t__not_edited__WuRP8\">DNS filtering blocks<\/span><span class=\"Editor_t__not_edited__WuRP8\">\u00a0<\/span><span class=\"Editor_t__not_edited__WuRP8\">inappropriate, non-work-related<\/span><span class=\"Editor_t__added__LtuNJ\">,<\/span><span class=\"Editor_t__not_edited__WuRP8\">\u00a0or harmful websites<\/span><span class=\"Editor_t__not_edited__WuRP8\">\u00a0for\u00a0<\/span><span class=\"Editor_t__added__LtuNJ\">organisations seeking to implement <\/span><span class=\"Editor_t__not_edited__WuRP8\">a safe and productive\u00a0<\/span><span class=\"Editor_t__not_edited__WuRP8\">environment.<\/span><\/li>\n<li><span class=\"Editor_t__added__LtuNJ\">Businesses implement DNS<\/span>\u00a0<span class=\"Editor_t__added__LtuNJ\">filtering<\/span>\u00a0to adhere to\u00a0<span class=\"Editor_t__not_edited__WuRP8\">industry regulations and\u00a0<\/span><span class=\"Editor_t__not_edited__WuRP8\">data protection laws.\u00a0<\/span><\/li>\n<li><span class=\"Editor_t__added__LtuNJ\">DNS<\/span>\u00a0<span class=\"Editor_t__added__LtuNJ\">filtering<\/span><span class=\"Editor_t__not_edited__WuRP8\">\u00a0<\/span><span class=\"Editor_t__not_edited__WuRP8\">complements\u00a0<\/span><span class=\"Editor_t__not_edited__WuRP8\">other\u00a0security\u00a0<\/span><span class=\"Editor_t__not_edited__WuRP8\">measures<\/span><span class=\"Editor_t__added__LtuNJ\">,<\/span>\u00a0<span class=\"Editor_t__added__LtuNJ\">including<\/span>\u00a0<span class=\"Editor_t__not_edited__WuRP8\">firewalls and antivirus\u00a0<\/span><span class=\"Editor_t__added__LtuNJ\">tools, to\u00a0<\/span><span class=\"Editor_t__added__LtuNJ\">secure<\/span><span class=\"Editor_t__not_edited__WuRP8\">\u00a0websites\u00a0against multiple\u00a0<\/span><span class=\"Editor_t__not_edited__WuRP8\">cyber threats.\u00a0<\/span><\/li>\n<\/ul>\n<h2>Types of DNS Filtering<\/h2>\n<p>Here are some types of DNS filtering that businesses can use for a secure online environment.<\/p>\n<h3>Blacklist-based DNS Filtering<\/h3>\n<p>This type of DNS filtering maintains a list of known malicious or inappropriate domains offering\u00a0preemptive protection against recognised threats. Access is denied if the domain is found in the blocked list of websites.<\/p>\n<h3>Whitelist-based DNS Filtering<\/h3>\n<p>Whitelist-based filtering focuses on permitting access only to approved websites and allows organisations to have strict control over what users can access.<\/p>\n<h3>Category based Filtering<\/h3>\n<p>Content is evaluated against predefined categories to see if it\u2019s approved for access.<\/p>\n<h3>Custom Policies<\/h3>\n<p>Businesses can create custom policies to block or allow websites based on their requirements.<\/p>\n<h2>Best Practices for DNS Filtering<\/h2>\n<ol>\n<li>Regularly update Blacklists and Whitelists.<\/li>\n<li>Follow customisable filtering policies that align with the needs of the organisation.<\/li>\n<li>Review filtering policies and logs periodically to adjust rules and understand user behaviour.<\/li>\n<\/ol>\n<table style=\"border-collapse: collapse; width: 100%;\">\n<tbody>\n<tr>\n<td style=\"width: 100%;\"><em><strong>Pro Tip:\u00a0\u00a0<\/strong>There are multiple layers of DNS caching within any network. Flushing internal DNS systems will ensure end users benefit from DNS policy changes better.<\/em><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>DNS Filtering &#8211; Advantages and Disadvantages<\/h2>\n<p>Here are some advantages and disadvantages of DNS filtering.<\/p>\n<table>\n<tbody>\n<tr>\n<td><strong>Advantages\u00a0<\/strong><\/td>\n<td><strong>Disadvantages\u00a0\u00a0<\/strong><\/td>\n<\/tr>\n<tr>\n<td>\n<ul>\n<li>Improved online security<\/li>\n<li>Unwanted pages are filtered even before they enter the infrastructure, leading to faster page loads<\/li>\n<li>Implementation of DNS filtration is simple and quick<\/li>\n<\/ul>\n<\/td>\n<td>\n<ul>\n<li>VPNs and alternate DNS services can bypass the DNS filtering<\/li>\n<li>DNS filtering systems can misclassify websites, leading to legitimate content being blocked<\/li>\n<li>Achieving a balance in filtering policies can be a challenge<\/li>\n<\/ul>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Wrapping Up<\/h2>\n<p><span class=\"Editor_t__not_edited__WuRP8\">DNS filtering protects networks and users against online attacks by blocking access to malicious and harmful websites. It allows businesses to tailor their access policies, accelerate browsing speeds, reduce website downtime instances, and ensure their networks fulfill IT compliance requirements.<\/span><\/p>\n<p><span class=\"Editor_t__not_edited__WuRP8\">Want to have a website for your business with a unique domain name for a professional 24\/7 online presence? Launch and operate your online business with a\u00a0<\/span><span class=\"Editor_t__not_edited_long__JuNNx\">fast and reliable web hosting service-\u00a0<\/span><span class=\"Editor_t__not_edited_long__JuNNx\"><a href=\"https:\/\/www.crazydomains.au\/\" target=\"_blank\" rel=\"noopener\">Crazy Domains.<\/a><\/span><\/p>\n<p><span class=\"Editor_t__not_edited__WuRP8\">Crazy Domains g<\/span><span class=\"Editor_t__added__LtuNJ\">ives<\/span>\u00a0<span class=\"Editor_t__added__LtuNJ\">users<\/span>\u00a0multiple\u00a0<span class=\"Editor_t__not_edited_long__JuNNx\">DNS management options to manage DNS records and reduce DNS security threats effortlessly.\u00a0<\/span><span class=\"Editor_t__not_edited__WuRP8\">With\u00a0<\/span><span class=\"Editor_t__added__LtuNJ\">several<\/span>\u00a0<span class=\"Editor_t__added__LtuNJ\">available\u00a0<\/span><span class=\"Editor_t__not_edited__WuRP8\">platforms\u00a0<\/span><span class=\"Editor_t__added__LtuNJ\">like<\/span>\u00a0<span class=\"Editor_t__not_edited_long__JuNNx\">Account Manager, cPanel, Exchange Manager, and Plesk, you can choose the perfect way to manage your domain&#8217;s\u00a0<\/span><span class=\"Editor_t__not_edited__WuRP8\">DNS\u00a0<\/span><span class=\"Editor_t__added__LtuNJ\">setting<\/span><span class=\"Editor_t__not_edited__WuRP8\">.\u00a0<\/span><\/p>\n<p><a href=\"https:\/\/www.crazydomains.com.au\/contact\/\" target=\"_blank\" rel=\"noopener\">Contact us<\/a>\u00a0to learn more about DNS management and how to protect your website from cyber-attacks.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>DNS filtering blocks access to malicious or unauthorised websites by checking DNS requests against a list of allowed or blocked domains, enhancing cybersecurity and preventing threats like malware and phishing. With incidents of\u00a0malware, phishing attacks, and ransomware on the rise,\u00a0safeguarding\u00a0sensitive information and\u00a0providing\u00a0a safe browsing experience\u00a0are\u00a0crucial\u00a0now\u00a0more\u00a0than ever. DNS\u00a0filtering is a simple yet powerful solution to prevent [&hellip;]<\/p>\n","protected":false},"author":1537,"featured_media":56965,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center 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center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[8309],"tags":[],"coauthors":[8037],"class_list":["post-56964","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-domain"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>What is DNS Filtering and Why is it Vital for Online Security?<\/title>\n<meta name=\"description\" content=\"Understand what DNS filtering is and how it blocks malicious sites, prevents unauthorized access, and ensures a safe browsing experience.\" \/>\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.crazydomains.com.au\/learn\/what-is-dns-filtering\/\" 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