DNS Subdomain Authorization:Here we only show the subdomain authorization for forward parsingThe parent domain is able to parse the a record of the subdomain (not authoritative, because it is not self-parsing),The subdomain cannot resolve the A
"Subdomain Authorization" "Experimental description": a new server IP of 192.168.0.112 is configured to become the primary DNS for the test.com subdomain (a.test.com)"Experimental Validation": subdomains can be self-managed, and DNS can be
Subdomain authorization: In fact, a larger domain is divided into small areas, each small area can be managed by a group or groups of servers, these servers only resolve domain names within their jurisdiction, resolution requests beyond their scope
DNS subdomain and related authorization under Linux
The forward feature is a domain name that cannot be resolved locally and is forwarded to the specified DNS serverForward only; All unresolved domain names are forwarded to the specified
I. experiment environment
Three Linux servers
1. primary DNS: 192.168.137.6
2. Server Load balancer from DNS (configured as forwarding domain): 192.168.137.7
3. subdomain DNS server: 192.168.137.9
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DNS Subdomain authorizationRole: Applies to the same DNS organizationThe resolution of the parent/child domain is handled by a different DNS serverThe parent DNS server should have the ability to iterate over the sub-domain nameSubordinate
1. subdomain authorization and forwarding if a company applies for the next luowei.com domain name, but considering that there are too many departments in the company, it is necessary to create a separate domain name in a separate department, for
DNS is a core service of the Internet, as a distributed database that can map domain names and IP addresses to each other, making it easier for people to access the Internet rather than remembering the number of IP strings that can be read directly
A recordThe A (Address) record is used to specify the IP address record corresponding to the Host Name (or domain name. You can direct the website server under this domain name to your web server. You can also set a subdomain name for your domain
DNS Subdomain authorizationForward zone:Sub_zone_name in NS nsserver_sub_zone_nameNsserver_sub_zone_name in a IP. comMylinux.com. In NS ns1.mylinux.com.In NS ns2.mylinux.com.Ns1.mylinux.com. In A 192.168.10.2Ns2.mylinux.com. In A 192.168.10.3--------
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