Microsoft
First published on TECHNET on Jul 03, 2012

Quick cheat sheet for port numbers used by SQL Server services or services that SQL Server may depend on:


21 TCP FTP (replication)
80 TCP HTTP endpoints, Reporting Services, HTTP replication
135 TCP & UDP RPC, WMI, MSDTC, SQL Agent file copy, and TSQL Debugger (RPC used for multiple purposes including SSIS and clustering.)
137 UDP File & Print Sharing (replication) and Cluster Admin
138 UDP File & Print Sharing (replication)
139 TCP FileStream and NetBIOS Session Service (clustering)
443 TCP HTTPS endpoints and Reporting Services
445 TCP & UDP FileStream, SMB (clustering), and File & Print Sharing
500 UDP IPSec
860 TCP iSCSI
1024-5000 TCP Original dynamic ports for named instances. (WinSock standard.)(See ports 49152-65535.) The DoD Database STIG requires static ports.
1433 TCP SQL Server database engine
1434 TCP & UDP SQL Server database engine, DAC, and SQL Server's "Browse" button.
2382 UDP Analysis Serviceswhen using dynamic ports with named instances
2383 TCP Analysis Services
2393-2394 TCP Analysis Services version 7
2725 TCP Analysis Services
3260 TCP iSCSI
3343 UDP Cluster network driver
3389 TCP Remote Desktop Protocol (RDP)
3882 TCP DTS/SSIS
4022 TCP Conventional port for the SQL Broker service
4500 UDP IPSec
5000-5099 UDP Clustering
5022 TCP AlwaysOn's default port for primary and secondary replicas
7022 TCP Conventional port for Database Mirroring
8011-8031 UDP Clustering internode RPC
49152-65535 TCP Latest dynamic ports for named instances. (WinSock standard.)(See ports 1024-5000.) The DoD Database STIG requires static ports.

Microsoft recommends non-default ports for maximum security.


Check ports in use: SELECT ServerProperty("ProcessID")
At a command prompt: "netstat -ano"


AlwaysOn Ports



  • Each instance w an Availability Group (AG) must have a database mirroring endpoint, and they endpoints bust be started (query sys.database_mirroring_endpoints and sys.tcp_endpoints).

  • Logins from a remote server must have CONNECT permission. Each instance must have access to ports on all partners.


Resources: Windows Firewall & SQL Server , Ports that DBAs Need to Know , and KB968872