ACLs, DNS logs, Queryperf stress tests, and dnstop performance tests

Review:

allow-recursion {}; Define a client that can be recursive

Allow-query {}; Clients that allow queries

allow-transfer{}; Enable zone transfer

Axfr

Ixfr

What if there are more clients that need to be defined?

So you can use a variable to define it, which is the ACL

ACL Acl_name {

***.***.***/**;

***.***.***/**;

};

Intelligent resolution of the server

First, configure three networks: a 172.168.100.1 a 192.168.0.141. a 172.16.100.8

The 192 is assumed to be the client of Unicom network, 172**.8 is assumed to be the client of telecom

Then go to the primary server to define NAMED.CONF (2 of the lab's named services were stopped from the server)

"Here we need to use a new feature view

View View_name {

All areas must be defined in an attempt

”

where match-clients {}; Represents the use of the defined ACL