{"id":884,"date":"2025-03-30T08:00:39","date_gmt":"2025-03-30T08:00:39","guid":{"rendered":"https:\/\/dnscompetition.in\/articles\/implementing-dns-based-data-exfiltration-prevention\/"},"modified":"2025-03-30T08:00:39","modified_gmt":"2025-03-30T08:00:39","slug":"implementing-dns-based-data-exfiltration-prevention","status":"publish","type":"post","link":"https:\/\/dnscompetition.in\/hi\/articles\/implementing-dns-based-data-exfiltration-prevention\/","title":{"rendered":"DNS-\u0906\u0927\u093e\u0930\u093f\u0924 \u0921\u0947\u091f\u093e \u090f\u0915\u094d\u0938\u092b\u093c\u093f\u0932\u091f\u094d\u0930\u0947\u0936\u0928 \u0930\u094b\u0915\u0925\u093e\u092e \u0915\u094b \u0932\u093e\u0917\u0942 \u0915\u0930\u0928\u093e"},"content":{"rendered":"<p>\u091c\u092c \u0907\u0902\u091f\u0930\u0928\u0947\u091f \u092a\u094d\u0930\u094b\u091f\u094b\u0915\u0949\u0932 \u0915\u0947 \u091c\u091f\u093f\u0932 \u091c\u093e\u0932 \u0915\u0940 \u092c\u093e\u0924 \u0906\u0924\u0940 \u0939\u0948, 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\u091c\u093e\u0928\u0915\u093e\u0930\u0940 \u0915\u093e \u092a\u0947\u0932\u094b\u0921 \u0932\u0947 \u091c\u093e \u0930\u0939\u0940 \u0925\u0940\u0902\u0964 \u0907\u0938 \u0905\u0928\u0941\u092d\u0935 \u0928\u0947 \u092e\u091c\u092c\u0942\u0924 DNS \u090f\u0915\u094d\u0938\u092b\u093c\u093f\u0932\u091f\u094d\u0930\u0947\u0936\u0928 \u0930\u094b\u0915\u0925\u093e\u092e \u0930\u0923\u0928\u0940\u0924\u093f\u092f\u094b\u0902 \u0915\u0940 \u092e\u0939\u0924\u094d\u0935\u092a\u0942\u0930\u094d\u0923 \u0906\u0935\u0936\u094d\u092f\u0915\u0924\u093e \u0915\u094b \u0930\u0947\u0916\u093e\u0902\u0915\u093f\u0924 \u0915\u093f\u092f\u093e\u0964<\/p>\n<h2>\u0930\u094b\u0915\u0925\u093e\u092e \u0930\u0923\u0928\u0940\u0924\u093f\u092f\u093e\u0901: \u090f\u0915 \u092c\u0939\u0941\u0938\u094d\u0924\u0930\u0940\u092f \u0926\u0943\u0937\u094d\u091f\u093f\u0915\u094b\u0923<\/h2>\n<p>\u092a\u094d\u0930\u092d\u093e\u0935\u0940 DNS-\u0906\u0927\u093e\u0930\u093f\u0924 \u0921\u0947\u091f\u093e \u090f\u0915\u094d\u0938\u092b\u093c\u093f\u0932\u091f\u094d\u0930\u0947\u0936\u0928 \u0930\u094b\u0915\u0925\u093e\u092e \u0915\u0947 \u0932\u093f\u090f \u092c\u0939\u0941-\u0938\u094d\u0924\u0930\u0940\u092f \u0926\u0943\u0937\u094d\u091f\u093f\u0915\u094b\u0923 \u0915\u0940 \u0906\u0935\u0936\u094d\u092f\u0915\u0924\u093e \u0939\u094b\u0924\u0940 \u0939\u0948, \u091c\u093f\u0938\u092e\u0947\u0902 \u0924\u0915\u0928\u0940\u0915\u0940 \u0938\u092e\u093e\u0927\u093e\u0928\u094b\u0902 \u0915\u094b \u0938\u0924\u0930\u094d\u0915 \u0928\u093f\u0917\u0930\u093e\u0928\u0940 \u0915\u0947 \u0938\u093e\u0925 \u091c\u094b\u0921\u093c\u093e \u091c\u093e\u0924\u093e \u0939\u0948\u0964 \u092f\u0939\u093e\u0901 \u092e\u0941\u0916\u094d\u092f \u0930\u0923\u0928\u0940\u0924\u093f\u092f\u094b\u0902 \u0915\u093e \u0935\u093f\u0935\u0930\u0923 \u0926\u093f\u092f\u093e \u0917\u092f\u093e \u0939\u0948:<\/p>\n<h3>1. DNS \u091f\u094d\u0930\u0948\u092b\u093c\u093f\u0915 \u0935\u093f\u0936\u094d\u0932\u0947\u0937\u0923<\/h3>\n<p>\u091c\u093f\u0938 \u0924\u0930\u0939 \u090f\u0915 \u091c\u093e\u0938\u0942\u0938 \u0939\u0930 \u0938\u0941\u0930\u093e\u0917 \u0915\u0940 \u091c\u093e\u0902\u091a \u0915\u0930\u0924\u093e \u0939\u0948, \u0909\u0938\u0940 \u0924\u0930\u0939 DNS \u091f\u094d\u0930\u0948\u092b\u093c\u093f\u0915 \u0915\u093e \u0935\u093f\u0936\u094d\u0932\u0947\u0937\u0923 \u0915\u0930\u0928\u093e \u092d\u0940 \u092c\u0939\u0941\u0924 \u091c\u093c\u0930\u0942\u0930\u0940 \u0939\u0948\u0964 DNS \u0932\u0949\u0917 \u0915\u0940 \u091c\u093e\u0902\u091a \u0915\u0930\u0915\u0947 \u0914\u0930 \u0905\u0938\u093e\u092e\u093e\u0928\u094d\u092f \u092a\u0948\u091f\u0930\u094d\u0928 \u0915\u0940 \u092a\u0939\u091a\u093e\u0928 \u0915\u0930\u0915\u0947, \u0938\u0902\u0917\u0920\u0928 \u0938\u0902\u092d\u093e\u0935\u093f\u0924 \u090f\u0915\u094d\u0938\u092b\u093c\u093f\u0932\u091f\u094d\u0930\u0947\u0936\u0928 \u092a\u094d\u0930\u092f\u093e\u0938\u094b\u0902 \u0915\u093e \u092a\u0924\u093e \u0932\u0917\u093e \u0938\u0915\u0924\u0947 \u0939\u0948\u0902\u0964 \u0935\u093f\u0938\u0902\u0917\u0924\u093f \u092a\u0939\u091a\u093e\u0928 \u090f\u0932\u094d\u0917\u094b\u0930\u093f\u0926\u092e \u0915\u094b \u0932\u093e\u0917\u0942 \u0915\u0930\u0928\u0947 \u0938\u0947 \u0907\u0938 \u092a\u094d\u0930\u0915\u094d\u0930\u093f\u092f\u093e \u0915\u094b \u0914\u0930 \u092c\u0947\u0939\u0924\u0930 \u092c\u0928\u093e\u092f\u093e \u091c\u093e \u0938\u0915\u0924\u093e \u0939\u0948\u0964<\/p>\n<h4>\u0924\u093e\u0932\u093f\u0915\u093e 1: DNS \u090f\u0915\u094d\u0938\u092b\u093c\u093f\u0932\u091f\u094d\u0930\u0947\u0936\u0928 \u0915\u0947 \u0938\u0902\u0915\u0947\u0924\u0915<\/h4>\n<table>\n<thead>\n<tr>\n<th>\u0938\u0942\u091a\u0915<\/th>\n<th>\u0935\u093f\u0935\u0930\u0923<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u0905\u0938\u093e\u092e\u093e\u0928\u094d\u092f \u0915\u094d\u0935\u0947\u0930\u0940 \u0935\u0949\u0932\u094d\u092f\u0942\u092e<\/td>\n<td>\u0935\u093f\u0936\u093f\u0937\u094d\u091f \u0921\u094b\u092e\u0947\u0928 \u0915\u0947 \u0932\u093f\u090f DNS \u0915\u094d\u0935\u0947\u0930\u0940\u091c\u093c \u092e\u0947\u0902 \u0905\u091a\u093e\u0928\u0915 \u0935\u0943\u0926\u094d\u0927\u093f\u0964<\/td>\n<\/tr>\n<tr>\n<td>\u0917\u0948\u0930-\u092e\u093e\u0928\u0915 \u0915\u094d\u0935\u0947\u0930\u0940 \u092a\u094d\u0930\u0915\u093e\u0930<\/td>\n<td>\u0905\u0938\u093e\u092e\u093e\u0928\u094d\u092f \u0915\u094d\u0935\u0947\u0930\u0940 \u092a\u094d\u0930\u0915\u093e\u0930\u094b\u0902 \u092f\u093e \u0930\u093f\u0915\u0949\u0930\u094d\u0921 \u0905\u0928\u0941\u0930\u094b\u0927\u094b\u0902 \u0915\u093e \u0909\u092a\u092f\u094b\u0917.<\/td>\n<\/tr>\n<tr>\n<td>\u0921\u094b\u092e\u0947\u0928 \u0928\u093e\u092e\u094b\u0902 \u092e\u0947\u0902 \u0909\u091a\u094d\u091a \u090f\u0928\u094d\u091f\u094d\u0930\u0949\u092a\u0940<\/td>\n<td>\u092f\u093e\u0926\u0943\u091a\u094d\u091b\u093f\u0915 \u092f\u093e \u0917\u0948\u0930-\u092e\u093e\u0928\u0935-\u092a\u0920\u0928\u0940\u092f \u0928\u093e\u092e \u0935\u093e\u0932\u0947 \u0921\u094b\u092e\u0947\u0928\u0964<\/td>\n<\/tr>\n<tr>\n<td>\u0905\u0928\u0938\u0941\u0932\u091d\u0947 \u0921\u094b\u092e\u0947\u0928 \u092a\u0930 \u092c\u093e\u0930-\u092c\u093e\u0930 \u0915\u094d\u0935\u0947\u0930\u0940\u091c\u093c<\/td>\n<td>\u0917\u0948\u0930-\u092e\u094c\u091c\u0942\u0926 \u0921\u094b\u092e\u0947\u0928 \u0915\u094b \u0939\u0932 \u0915\u0930\u0928\u0947 \u0915\u0947 \u0932\u093f\u090f \u0932\u0917\u093e\u0924\u093e\u0930 \u092a\u094d\u0930\u092f\u093e\u0938\u0964<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>2. DNS \u092b\u093c\u093e\u092f\u0930\u0935\u0949\u0932 \u0915\u094b \u0932\u093e\u0917\u0942 \u0915\u0930\u0928\u093e<\/h3>\n<p>\u0938\u0941\u0930\u0915\u094d\u0937\u093e \u091c\u093e\u0902\u091a \u092c\u093f\u0902\u0926\u0941 \u0915\u0940 \u0924\u0930\u0939 \u0939\u0940, DNS \u092b\u093c\u093e\u092f\u0930\u0935\u0949\u0932 \u0938\u0902\u0926\u093f\u0917\u094d\u0927 DNS \u091f\u094d\u0930\u0948\u092b\u093c\u093f\u0915 \u0915\u094b \u092c\u094d\u0932\u0949\u0915 \u092f\u093e \u092a\u0941\u0928\u0930\u094d\u0928\u093f\u0930\u094d\u0926\u0947\u0936\u093f\u0924 \u0915\u0930 \u0938\u0915\u0924\u093e \u0939\u0948\u0964 \u092a\u0942\u0930\u094d\u0935\u0928\u093f\u0930\u094d\u0927\u093e\u0930\u093f\u0924 \u0928\u093f\u092f\u092e \u0938\u0947\u091f \u0915\u0930\u0915\u0947, \u0938\u0902\u0917\u0920\u0928 \u0905\u0928\u0927\u093f\u0915\u0943\u0924 \u0921\u0947\u091f\u093e \u091f\u094d\u0930\u093e\u0902\u0938\u092b\u093c\u0930 \u092a\u094d\u0930\u092f\u093e\u0938\u094b\u0902 \u0915\u094b \u0930\u094b\u0915 \u0938\u0915\u0924\u0947 \u0939\u0948\u0902\u0964<\/p>\n<h4>\u0915\u094b\u0921 \u0938\u094d\u0928\u093f\u092a\u0947\u091f: DNS \u092b\u093c\u093e\u092f\u0930\u0935\u0949\u0932 \u0928\u093f\u092f\u092e \u0915\u093e \u0909\u0926\u093e\u0939\u0930\u0923<\/h4>\n<pre><code class=\"language-bash\" data-no-translation=\"\"># Example of a DNS firewall rule using BIND\nacl &quot;trusted&quot; {\n    192.168.0.0\/16;  # Trusted IP range\n};\n\nview &quot;default&quot; {\n    match-clients { &quot;trusted&quot;; };\n    zone &quot;.&quot; IN {\n        type hint;\n        file &quot;named.ca&quot;;\n    };\n    \/\/ Block suspicious domain\n    zone &quot;suspicious-domain.com&quot; {\n        type master;\n        file &quot;null.zone.file&quot;;\n    };\n};\n<\/code><\/pre>\n<h3>3. DNS \u0938\u0941\u0930\u0915\u094d\u0937\u093e \u090f\u0915\u094d\u0938\u091f\u0947\u0902\u0936\u0928 (DNSSEC)<\/h3>\n<p>DNSSEC DNS \u092a\u094d\u0930\u0924\u093f\u0915\u094d\u0930\u093f\u092f\u093e\u0913\u0902 \u0915\u094b \u092a\u094d\u0930\u093e\u092e\u093e\u0923\u093f\u0915\u0924\u093e \u0915\u0947 \u0932\u093f\u090f \u0938\u0924\u094d\u092f\u093e\u092a\u093f\u0924 \u0915\u0930\u0928\u0947 \u092e\u0947\u0902 \u0938\u0915\u094d\u0937\u092e \u092c\u0928\u093e\u0915\u0930 \u0938\u0941\u0930\u0915\u094d\u0937\u093e \u0915\u0940 \u090f\u0915 \u092a\u0930\u0924 \u091c\u094b\u0921\u093c\u0924\u093e \u0939\u0948\u0964 \u091c\u092c\u0915\u093f DNSSEC \u0938\u0940\u0927\u0947 \u0921\u0947\u091f\u093e \u090f\u0915\u094d\u0938\u092b\u093c\u093f\u0932\u091f\u094d\u0930\u0947\u0936\u0928 \u0915\u094b \u0928\u0939\u0940\u0902 \u0930\u094b\u0915\u0924\u093e \u0939\u0948, \u092f\u0939 \u0938\u0941\u0928\u093f\u0936\u094d\u091a\u093f\u0924 \u0915\u0930\u0924\u093e \u0939\u0948 \u0915\u093f \u092a\u094d\u0930\u093e\u092a\u094d\u0924 \u0915\u093f\u092f\u093e \u091c\u093e \u0930\u0939\u093e DNS \u0921\u0947\u091f\u093e \u0935\u093e\u0938\u094d\u0924\u0935\u093f\u0915 \u0914\u0930 \u0905\u092a\u0930\u093f\u0935\u0930\u094d\u0924\u093f\u0924 \u0939\u0948\u0964<\/p>\n<h3>4. \u0928\u093f\u092f\u092e\u093f\u0924 \u0911\u0921\u093f\u091f \u0914\u0930 \u092a\u094d\u0930\u0936\u093f\u0915\u094d\u0937\u0923<\/h3>\n<p>\u0905\u0915\u0947\u0932\u0947 \u0924\u0915\u0928\u0940\u0915\u0940 \u0938\u092e\u093e\u0927\u093e\u0928 \u0930\u093e\u092e\u092c\u093e\u0923 \u0928\u0939\u0940\u0902 \u0939\u0948\u0902\u0964 DNS \u0915\u0949\u0928\u094d\u092b\u093c\u093f\u0917\u0930\u0947\u0936\u0928 \u0915\u0940 \u0928\u093f\u092f\u092e\u093f\u0924 \u0911\u0921\u093f\u091f \u0914\u0930 \u0906\u0908\u091f\u0940 \u0915\u0930\u094d\u092e\u091a\u093e\u0930\u093f\u092f\u094b\u0902 \u0915\u0947 \u0932\u093f\u090f \u0935\u094d\u092f\u093e\u092a\u0915 \u092a\u094d\u0930\u0936\u093f\u0915\u094d\u0937\u0923 \u0938\u0902\u0917\u0920\u0928 \u0915\u0940 \u090f\u0915\u094d\u0938\u092b\u093c\u093f\u0932\u091f\u094d\u0930\u0947\u0936\u0928 \u092a\u094d\u0930\u092f\u093e\u0938\u094b\u0902 \u0915\u094b \u0935\u093f\u092b\u0932 \u0915\u0930\u0928\u0947 \u0915\u0940 \u0915\u094d\u0937\u092e\u0924\u093e \u0915\u094b \u092e\u0939\u0924\u094d\u0935\u092a\u0942\u0930\u094d\u0923 \u0930\u0942\u092a \u0938\u0947 \u092c\u0922\u093c\u093e \u0938\u0915\u0924\u093e \u0939\u0948\u0964<\/p>\n<h2>\u0928\u093f\u0937\u094d\u0915\u0930\u094d\u0937<\/h2>\n<p>\u0938\u093e\u0907\u092c\u0930 \u0938\u0941\u0930\u0915\u094d\u0937\u093e \u0915\u0947 \u0928\u093f\u0930\u0902\u0924\u0930 \u0935\u093f\u0915\u0938\u093f\u0924 \u0939\u094b\u0924\u0947 \u092a\u0930\u093f\u0926\u0943\u0936\u094d\u092f \u092e\u0947\u0902, DNS-\u0906\u0927\u093e\u0930\u093f\u0924 \u0921\u0947\u091f\u093e \u090f\u0915\u094d\u0938\u092b\u093c\u093f\u0932\u094d\u091f\u0930\u0947\u0936\u0928 \u0930\u094b\u0915\u0925\u093e\u092e \u092e\u0927\u094d\u092f\u092f\u0941\u0917\u0940\u0928 \u092e\u0939\u0932 \u0915\u0940 \u0926\u0940\u0935\u093e\u0930\u094b\u0902 \u0915\u094b \u092e\u091c\u093c\u092c\u0942\u0924 \u0915\u0930\u0928\u0947 \u0915\u0947 \u0938\u092e\u093e\u0928 \u0939\u0948\u0964 \u0907\u0938\u0915\u0947 \u0932\u093f\u090f \u0938\u0924\u0930\u094d\u0915\u0924\u093e, \u092e\u091c\u093c\u092c\u0942\u0924 \u0938\u0941\u0930\u0915\u094d\u0937\u093e \u0914\u0930 \u0938\u0902\u092d\u093e\u0935\u093f\u0924 \u0915\u092e\u091c\u093c\u094b\u0930\u093f\u092f\u094b\u0902 \u0915\u0940 \u0917\u0939\u0930\u0940 \u0938\u092e\u091d \u0915\u0940 \u0906\u0935\u0936\u094d\u092f\u0915\u0924\u093e \u0939\u094b\u0924\u0940 \u0939\u0948\u0964 \u092c\u0939\u0941-\u0938\u094d\u0924\u0930\u0940\u092f \u0930\u0923\u0928\u0940\u0924\u093f \u0915\u094b \u0932\u093e\u0917\u0942 \u0915\u0930\u0915\u0947, \u0938\u0902\u0917\u0920\u0928 \u0905\u092a\u0928\u0947 \u0938\u0902\u0935\u0947\u0926\u0928\u0936\u0940\u0932 \u0921\u0947\u091f\u093e \u0915\u094b \u0921\u093f\u091c\u093f\u091f\u0932 \u0915\u094d\u0937\u0947\u0924\u094d\u0930 \u0915\u0940 \u091b\u093e\u092f\u093e \u092e\u0947\u0902 \u091b\u093f\u092a\u0947 \u0926\u0941\u0930\u094d\u092d\u093e\u0935\u0928\u093e\u092a\u0942\u0930\u094d\u0923 \u0905\u092d\u093f\u0928\u0947\u0924\u093e\u0913\u0902 \u0938\u0947 \u092c\u091a\u093e \u0938\u0915\u0924\u0947 \u0939\u0948\u0902\u0964<\/p>\n<p>\u091c\u092c \u092e\u0948\u0902 \u0905\u092a\u0928\u0947 \u0936\u0941\u0930\u0941\u0906\u0924\u0940 \u0915\u0930\u093f\u092f\u0930 \u0915\u0947 \u0909\u0938 \u092e\u0939\u0924\u094d\u0935\u092a\u0942\u0930\u094d\u0923 \u092e\u093e\u092e\u0932\u0947 \u092a\u0930 \u0935\u093f\u091a\u093e\u0930 \u0915\u0930\u0924\u093e \u0939\u0942\u0901, \u0924\u094b \u092e\u0941\u091d\u0947 \u0938\u093e\u0907\u092c\u0930 \u0935\u093f\u0930\u094b\u0927\u093f\u092f\u094b\u0902 \u0938\u0947 \u090f\u0915 \u0915\u0926\u092e \u0906\u0917\u0947 \u0930\u0939\u0928\u0947 \u0915\u0947 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\u0930\u0939\u0947\u0964<\/p>","protected":false},"excerpt":{"rendered":"<p>When it comes to the intricate web of internet protocols, the Domain Name System (DNS) is often likened to the phonebook of the internet. It translates domain names into IP addresses, directing traffic to the correct online destination. However, just as a phonebook can be misused, DNS can also be leveraged for nefarious purposes, such [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":885,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[4],"tags":[174,22,470,92,112,29,469,681,91,116],"class_list":["post-884","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-articles","tag-cyber-defense","tag-cybersecurity","tag-data-exfiltration","tag-data-protection","tag-dns-filtering","tag-dns-security","tag-dns-tunneling","tag-information-security","tag-network-security","tag-threat-prevention"],"acf":[],"_links":{"self":[{"href":"https:\/\/dnscompetition.in\/hi\/wp-json\/wp\/v2\/posts\/884","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dnscompetition.in\/hi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dnscompetition.in\/hi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dnscompetition.in\/hi\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/dnscompetition.in\/hi\/wp-json\/wp\/v2\/comments?post=884"}],"version-history":[{"count":0,"href":"https:\/\/dnscompetition.in\/hi\/wp-json\/wp\/v2\/posts\/884\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/dnscompetition.in\/hi\/wp-json\/wp\/v2\/media\/885"}],"wp:attachment":[{"href":"https:\/\/dnscompetition.in\/hi\/wp-json\/wp\/v2\/media?parent=884"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dnscompetition.in\/hi\/wp-json\/wp\/v2\/categories?post=884"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dnscompetition.in\/hi\/wp-json\/wp\/v2\/tags?post=884"}],"curies":[{"name":"\u0921\u092c\u094d\u0932\u094d\u092f\u0942\u092a\u0940","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}