Fabric SQL Analytics Endpoint to Power BI Desktop Security Concerns

Hello ERWeiss 

Microsoft Fabric’s private endpoints securely route SQL analytics traffic through Azure’s private network backbone, bypassing public internet exposure even with port 1433 blocked.

Private endpoints reroute Fabric SQL analytics traffic through Microsoft’s backbone network (not public internet), while still using TCP 1433.
• Port blocking on public networks won’t affect private-link connections since traffic never leaves Azure’s secure infrastructure.
• Requires enabling Block Public Internet Access in Fabric admin settings to enforce private routing

Enable Block Public Internet Access in Fabric admin settings to enforce private routing

Validate DNS resolution to private IPs using `nslookup`.
• Confirm NSGs allow outbound port 1433 within the VNet

By configuring private endpoints and internal NSGs correctly, you  can securely use Fabric SQL endpoints while complying with port-blocking policies.