Can I use a different port for SQL Server, and what are the implications?

Yes, you can change the SQL Server port. However, it requires modifying the SQL Server instance configuration. This change may be necessary if port 1433 is blocked by a firewall. If you change the port, you must also ensure that the firewall allows traffic on the new port and that the client application is configured to connect to the new port. It is generally recommended to avoid changing the default port unless absolutely necessary.