Port 1433 — Microsoft SQL Server

Q: Transport ProtocolTCPSafety precautionsDo not expose to the Internet.Remain with authorized servers/applications.Should we open this port in the Burt?

Only if a service is actually needed l, use it. Apply the principle of any privilege: limit the authorized sources, destinations and interfaces, and then log connections when relevant.

Q: How do I check this port?

Test-NetConnection SERVER -Port 1433Under Linux, you can use nc -vz SERVER 1433.

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Port1433

TransportTCP

ServiceMicrosoft SQL Server

Port 1433TCP

Connect to SQL Server instances using the standard port.

What is the purpose of port 1433?

Database. The protocol or service generally associated with this is Microsoft SQL Server.

Transport Protocol

TCP

Safety precautions

Do not expose to the Internet.Remain with authorized servers/applications.

Should we open this port in the firewall?

Only if a service is actually needed the use it. Apply the principle of any privilege: limit the authorized sources, destinations and interfaces, and then log connections when relevant.

How do I check this port?

Test-NetConnection SERVER -Port 1433

Under Linux, you can use nc -vz SERVER 1433.

Port/service associations are common conventions. An application can be configured on another port.