Databases & cachesTCP 1433 Encrypted
Port 1433: MSSQL
Microsoft SQL Server
Default port for SQL Server. UDP 1434 is the SQL Browser service.
How attackers abuse it
- Exposed instances brute forced; weak 'sa' passwords.
- Command execution via xp_cmdshell once inside.
How to defend it
- Never expose databases to the internet.
- Disable xp_cmdshell; least-privilege service accounts; enforce encryption.
Exam tip
Databases belong on an internal tier reachable only from the application tier.