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 po...