When DNSWatch receives a DNS request for a denied domain, it resolves the domain to the IP address of the Blackhole Server. For more information, see About DNSWatch DNS Servers. WatchGuard hosts DNSWatch DNS servers in multiple regions. The DNSWatch DNS resolvers resolve DNS queries from protected networks. For more information, see About DNSWatch Domain Feeds. To help improve DNSWatch for all users, you can share the domains you manually add to the block list with WatchGuard. DNSWatch polls a variety of commercial threat intelligence feeds daily to identify new malicious domains and update the domain feeds. To protect your network, DNSWatch uses a complex set of heuristics to identify requests to malicious domains or domains with suspicious certificates. For more information, see Customize DNSWatch Block Pages. When DNSWatch denies a DNS request, it generates an alert with the collected information for administrators. DNSWatch also attempts to gather more information about the source of the blocked DNS request and the type of threat. When DNSWatch determines that a requested domain is malicious or filtered, the block page appears instead of the requested content. For more information about policies, see Manage User Access to Content. You can also apply different client policies to different client groups. You can have one policy for off-network and a different policy for each protected network or Firebox. When a user tries to access a filtered web site, DNSWatch replaces the requested content with the block page. With DNSWatch, you can create a content filter policy to block domains in specific categories, such as gambling, alcohol, or adult content. Sometimes you want to filter content that users can access both on and off your network.
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