Table 1. Comparison of BIND 8.2.1 and BIND 4.9.7
| BIND 8.2.1 | BIND 4.9.7 | 
| Configuration file | This version uses the | 
| syntax provides greater | standard BIND syntax | 
| flexibility and | as specified by | 
| granularity specified | the named.conf file. | 
| by the named.conf file. |  | 
|  |  | 
| Supports Dynamic Update | Does not support | 
| Standard. | Dynamic Update Standard. | 
|  |  | 
| Zone change notification | Does not support zone | 
| (NOTIFY) support exists | change notification | 
| for the primary master | (NOTIFY). | 
| server to notify slave |  | 
| servers of zone changes. |  | 
|  |  | 
| Provides greater control | Does not provide as much | 
| and granularity on | control and granularity | 
| logging. | over logging. | 
|  |  | 
| Configuration options |  | 
| are extensive and |  | 
| complex. |  | 
|  |  | 
| Provides many more | Provides more security | 
| security features. | than its predecessors, | 
|  | but not as many as v8. |