  DNS     ,    .   
 ,  DNS    .

,       ,  , 
         ()  -
 ,   DNS   .          
DNS,    ,      -
      DNS   ,   
 (DoS-),        -
.  ,       
   ,   .

  DNS

   ()     DNS   .
  30   ,   ,   -
 ,   ,  ,   -
.       ,   ,  -
,  .

 

     ( TTL     -
 ):

 Name ().    IP-.

 TTL (TTL).   (. ).

 Class ().  1  IN Internet ( ,  DNS).

 Type ().   (. ).

 Data ().  ,    .

   Name       . -
   ,    ,   .

A. Address ().     14- .   
       ;      IP- 
    .  Name   ,  -
,       ,   .  Data  IP-
,   .     -
  ns   192.168.0.1:

ns      IN       A        192.168.0.1

. Address ().     16- .  -
     ns   1-:

ns      IN       AAAA     2001:630:d0:131:a00:20ff:feb5:efle

CNAME. Canonical Name ( ).      -
 .  Name    .  Data  -
   .  CNAME      -
          .   -


 24. DNS/BIND:      725