DNS tries to

DNS tries to

DNS attempted to: Resolve a domain name to a different address in 2. Clients that implement many different carriers have quick access to the site. As a cache server. When the customer requests, according to the customer IP to determine the resolution of that server address

allow-recursion {}; Specifies that a network segment is recursive

Allow-query {}; only who is allowed to query

Allow-transfer {}; Specifies that a network segment can be routed

Sxfr

Ixfr

If there are multiple network segments at the same time. ACLs can be defined. function functions in a similar script, generally defined before options

allow-query {172.16.0.0/16; 127.0.0.0/8; 10.0.0.0/8;};

ACL Innet {

172.16.0.0/16;

127.0.0.0/8;

10.0.0.0/8;

}

allow-query {innet;};

none; all the

any;

------------------------------------------

View View_name {

};

View View_name {

};

All areas must be defined in the attempt

Vi/etc/named.conf

ACL innet {define ACL

127.0.0.0/8;

192.168.10.0/24;

};

Options {

Directory "/var/named";

allow-recursion {innet;}; Allow only Cal address recursion

};

View Telecom {

match-clients {innet;}; The address inside the ACL uses this view

Zone "Mylinux.com" in {

Type master; Define as the primary server

File "Telecom.mylinux.com.zone";

};

};

View Unicom {

match-clients {any;}; This view is used by any other address

Zone "Mylinux.com" in {

Type master;

File "Unicom.mylinux.com.zone";

};

};

[Email protected] named]# cd/var/named

[Email protected] named]# vim Telecom.mylinux.com.zone

$TTL 3333

@ in SOA ns1.mylinux.com. Admin.mylinux.com. (

2016071001

1H

5M

1D

3H

)

In NS ns1

In MX 8 mail

NS1 in A 192.168.10.2

Mail in A 192.168.10.100

www in A 192.168.10.3

[Email protected] named]# chmod 640 Telecom.mylinux.com.zone

[Email protected] named]# chown root:named telecom.mylinux.com.zone

[email protected] named]# CP Telecom.mylinux.com.zone unicom.mylinux.com.zone-p

[Email protected] named]# vim Unicom.mylinux.com.zone

$TTL 3333

@ in SOA ns1.mylinux.com. Admin.mylinux.com. (

2016071001

1H

5M

1D

3H

)

In NS ns1

In MX 8 mail

NS1 in A 192.168.10.2 are the same DNS server so ns1 unchanged

Mail in A 172.168.10.10

www in A 172.168.10.30 ACL address All Access this website address

-------------------------------------------------------------------

The same is true if you need host parsing from the a.net domain. Whenever a domain data file and domain definition is provided, no matter how many domains can be resolved on a single host

[Email protected] named]# vim/etc/named.conf

allow-recursion {innet;};

};

View Telecom {

match-clients {innet;};

Zone "Mylinux.com" in {

Type master;

File "Telecom.mylinux.com.zone";

};

Zone "a.NET" in {Add a new domain file

Type master;

File "A.net.zone";

};

};

View Unicom {

match-clients {any;};

Zone "Mylinux.com" in {

Type master;

File "Unicom.mylinux.com.zone";

};

Zone "a.NET" in {Add a new domain file

Type master;

File "A.net.zone";

};

};

[Email protected] named]# vim A.net.zone

$TTL 4000

@ in SOA ns1.a.net. Admin.a.net. (

20160710

1H

5M

1D

5H

)

In NS ns1

NS1 in A 192.168.10.2

www in A 192.168.10.100

[Email protected] named]# chmod 640 A.net.zone

[Email protected] named]# chown root:named a.net.zone

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DNS tries to