Network misconfigurations

Azure virtual machine allows direct DNS access from the Internet

Risk Level

Informational (4)

Platform(s)
Compliance Frameworks

Description

The Domain Name System (DNS) is the hierarchical and decentralized naming system used to identify computers reachable through the Internet or other Internet Protocol (IP) networks. The resource records contained in the DNS associate domain names with other forms of information. The DNS port (53) is open on your virtual machine and allows all incoming traffic from the Internet. In order to keep security best practices, you should restrict access to be only from allowed IP addresses.
  • Recommended Mitigation

    Configure networking rule to allow incoming DNS traffic from allowed IP addresses only.