DNS (domain Name System) domain name resolution settings

DNS (domain Name System, domainname),

A distributed database that maps the domain name and IP address on the Internet makes it easier for users to access the Internet without remembering the number of IP strings that can be read directly by the machine. The process of obtaining the IP address of the host name through the hostname is called Domain name resolution (or hostname resolution). The DNS protocol runs on top of the UDP protocol, using the port number 53. RFC 2181 has a canonical description of DNS in RFC 2136, a description of dynamic updates to DNS, and RFC 2308 describes the reverse caching of DNS queries.

Description: When you visit through the website. is to access your corresponding host through the domain name, then the resolution of your domain will be directed to your host.

Analysis of the record in detail: Today in the domain name resolution found to resolve the domain name of their own stumbled, so do an explanation.

A record:

To point a domain name to an IPV4 address (for example: 10.10.10.10), you need to add a record

CNAME record:

If you point a domain name to a domain name and achieve the same access effect as the domain name, you need to add the CNAME record

MX Record:

Setting up an email service that will point to the mail server address and need to set up MX records

NS Records:

Domain name resolution server records, if you want to specify a subdomain name server to resolve, you need to set the NS record

TXT record:

can be filled in (empty), usually used as an SPF record (anti-spam)

AAAA record:

To point the hostname (or domain name) to a IPV6 address (for example: FF03:0:0:0:0:0:0:C1), you need to add AAAA records

SRV record:

Records which computer provides which service. The format is: the name of the service. Type of protocol (ex: _EXAMPLE-SERVER._TCP)

Explicit URL:

Point the domain name to an HTTP (s) protocol address, and when you access the domain name, Automatically jumps to the destination address (for example: After www.net.cn dominance is forwarded to www.hichina.com, when you access www.net.cn, the address bar displays the address: www.hichina.com).

Hidden URL:

similar to a dominant URL, but implicit forwarding hides the actual destination address (for example, when www.net.cn is forwarded to www.hichina.com, the address bar displays the address: www.net.cn) When the www.net.cn is accessed.

DNS (domain Name System) domain name resolution settings