DNS interrogation involves querying DNS servers to gather information about domain names like IP addresses, MX, or TXT records.
This process aids in network communication and resource discovery.
On the other hand, a zone transfer is process to collect all information related to a specific DNS server.
Techniques like using the dig command or nslookup with settings to query authoritative servers and request specific record types
dig @[DNS_server_IP] [target_domain] –t AXFRnslookup> server [authoritative_server_IP_or_name]> set type=any> ls –d [target_domain]
To defend against DNS interrogation, administrators can configure settings to prevent zone transfers and limit the information exposed.
By configuring DNS servers to reject zone transfers and implementing access controls, administrators can safeguard sensitive DNS information.
These defense techniques help prevent unauthorized access to DNS data and enhance the overall security of the network infrastructure.
Summary
- DNS interrogation involves querying DNS servers for domain information
- Admins defend against these by configuring servers to reject zone transfers and implementing access controls.