TechnitiumSoftware-DnsServer/Apps/BlockPageApp/dnsApp.config

[
  {
    "name": "default",
    "enableWebServer": true,
    "webServerLocalAddresses": [
      "0.0.0.0",
      "::"
    ],
    "webServerUseSelfSignedTlsCertificate": true,
    "webServerTlsCertificateFilePath": null,
    "webServerTlsCertificatePassword": null,
    "webServerRootPath": "wwwroot",
    "serveBlockPageFromWebServerRoot": false,
    "blockPageTitle": "Website Blocked",
    "blockPageHeading": "Website Blocked",
    "blockPageMessage": "This website has been blocked by your network administrator."
  }
]