SQL Server Always on 可用性组防火墙要求
端口要求
| Port | number | Between | Reason |
|---|---|---|---|
| 5022 | TCP | Nodes | AlwaysOn |
| 1433 | TCP | Nodes | SQL |
| 3343 | UDP | Nodes | Cluster |
| 137 | UDP | Nodes | DNS |
| 135 | TCP/UDP | Nodes | and |
| 49152 | through | 65535 | TCP/UDP |
| 445 | Nodes | SMB | communication |
| 139 | Nodes | NetBIOS | communication |
| 464 | Nodes | and | domain |
| 1433 | Network | and | VPN |
| 6789 | DNN | listener | Port |
DNN listener有版本限制要求：
SQL Server starting with either SQL Server 2019 CU8 and later, SQL Server 2017 CU25 and later, or SQL Server 2016 SP3 and later on Windows Server 2016 and later.
VNN
azure VNN 配置要有load balance
