Port
Port 1433 — MS SQL
Port 1433 (TCP) is used by MS SQL. Microsoft SQL Server database.
Port 1433 at a glance
| Property | Value |
|---|---|
| Port number | 1433 |
| Transport | TCP |
| Service | MS SQL |
| Category | Registered port |
What it is used for
Microsoft SQL Server database.
Security considerations
Never expose to the internet; a common breach vector.
See our full TCP/UDP port reference and learn how firewalls filter ports in the CyberOps course.
Frequently asked questions
What is port 1433 used for?
Port 1433 (TCP) is used by MS SQL. Microsoft SQL Server database.
Is port 1433 TCP or UDP?
Port 1433 uses TCP.
Is it safe to open port 1433?
Never expose to the internet; a common breach vector.
Related
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