Network port numbers used by Bind9.
Network port number used by Bind9
| Port number | Protocol | Description | 
|---|---|---|
| 53 | tcp/udp | General DNS data communication | 
| 953 | udp |  Control channel for Bind9 named process. Port used by rndc and nsupdate utility. | 
            
Network port numbers used by Bind9.
| Port number | Protocol | Description | 
|---|---|---|
| 53 | tcp/udp | General DNS data communication | 
| 953 | udp |  Control channel for Bind9 named process. Port used by rndc and nsupdate utility. |