Intranet domain name

Intranet domain names are a series of dot-separated names used for accessing destination servers in the cloud VPC network. They consist of the record set of the domains or subdomains you manage. By using an intranet domain name, you can quickly and securely communicate and access your network within the cloud.

Intranet domain names can be used to identify and locate various resources within a cloud environment, including Elastic Cloud Servers, physical servers, and Elastic Load Balancers. By binding intranet domain names to their corresponding record set, you can achieve network access based on domain names within the cloud environment.

Intranet Domain Resolution

Intranet domain names record the mapping relationship between domain names and addresses, allowing domain resolution to be performed within one or multiple VPCs. After registering a domain name, you acquire the right to use it. However, you cannot directly access your website or use it as an email suffix for sending and receiving emails. This is because domain names are a dedicated address translation system created for the convenience of memory. To access a server on the internet, you must use its IP address. Domain resolution is the process of mapping a domain name to an IP address.

VPC Association

Intranet DNS services associate intranet domain names with private IP addresses, providing domain resolution service within the VPC for eSurfing Cloud services. You can associate private domains with one or more VPCs that require access. When it is determined that specific VPCs no longer need to access particular intranet domain names, these VPCs can be disassociated and replaced with other VPCs that need association. VPCs that are disassociated will no longer be able to resolve resource records within private domains via Intranet DNS.

Reverse Resolution

Reverse resolution refers to the mapping from an IP address to a domain name. By querying a PTR record, you can obtain the domain name associated with a specific IP address. In Intranet DNS, unlike the standard A record (which maps a domain name to an IP address), PTR records are used to achieve the mapping from IP addresses to domain names. When performing reverse resolution, querying the PTR record for a specific IP address allows you to retrieve the corresponding domain name for that IP address. This type of record allows for the lookup of the associated domain name based on an IP address, rather than the usual process in reverse.

Record Set

A record set is a collection of resource records of the same type and with the same domain name that defines the type and value of resolution supported by a domain name. After you have created an intranet domain name and need to extend it at the domain level or record detailed information for the domain, such as creating corresponding A records or CNAME records, you can do so by creating a record set. Intranet DNS supports various record set types, including A, CNAME, MX, AAAA, TXT, SRV, and PTR.

Record Set Type	Application Scenarios	Description
A	Host record, can also be used for low-cost load balancing solutions.	Specifies the IPv4 address corresponding to a domain name, used to resolve the domain name to an IPv4 address.
CNAME	Alias record, can be used to hide the main domain.	Specifies an alias for the domain name, used to resolve the domain name to another domain name or map multiple domain names to the same domain.
MX	Mail exchange record, used for mail servers.	Specifies the mail server corresponding to the domain name, used to set up email servers for the mail domain.
AAAA	IPv6 host record, scenario equivalent to A.	Specifies the IPv6 address corresponding to a domain name, used to resolve the domain name to an IPv6 address.
TXT	Records DKIM public keys, used to prevent email fraud. Also used to record domain owner identity information for domain retrieval.	Used to identify and describe domain names, and can contain any information.
SRV	Applications can be sorted based on priority and weight, setting access rules.	Records specific services provided by a particular computer for external access, available for user queries. Besides the server address, SRV also records service port information and can set the priority and weight for each service address.
PTR	Reverse address resolution.	Specifies the reverse resolution record for an IP address, used to perform reverse lookup of the corresponding cloud server through the private IP address.

Intranet DNS

Features