Postgres connections now work through Sandbox firewall

Vercel Sandbox now enables connections to hosted Postgres databases through a firewall that intelligently handles Postgres TLS negotiation.

• •Supports connections to Neon, Supabase, AWS RDS, Nile, and Prisma Postgres
• •Firewall detects Postgres protocol startup sequence and applies domain policy after TLS upgrade
• •No code or database configuration changes required
• •TLS mandatory for domain-based filtering (sslmode=require or higher)
• •GSSAPI encryption unsupported; prevents silent fallback to unencrypted connections

This summary was automatically generated by AI based on the original article and may not be fully accurate.