本文介绍了域名解析服务（DNS）的基本原理及其在网络中的作用。DNS通过将易于记忆的域名转换为对应的IP地址，使得互联网上的资源定位更加便捷。此外，文章还讨论了DNS作为互联网关键组件所面临的潜在安全威胁。
Domain Name Service
The domain name service (DNS) is an Internet service that translates domain names into IP addresses. Since domain names are alphabetic, the corresponding IP addresses are determined by a DNS lookup. The DNS is a network of servers that maps Internet domain names to their numeric IP addresses. Information from all the domain name servers across the Internet are gathered together and housed at the central DNS registry that is then distributed on the Internet.
Figure 1 shows a query of the DNS in the process of a consumer accessing a provider. The consumer initially references the provider by their domain address name, which is resolved to the resource's IP address.
Figure 1 - An example of a domain name service.
The Internet’s DNS is a security single point of failure if an attacker is able to compromise the DNS.
Related Patterns:
- Cloud Denial-of-Service Protection
- Secure On-Premise Internet Access
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