Advanced egress firewall filtering for Vercel Sandbox

Advanced egress firewall filtering for Vercel Sandbox

• Vercel Sandbox now enforces egress policies via SNI filtering and CIDR blocks. • Outbound TLS connections are matched at handshake, blocking unauthorized destinations pre‑data. •

Web Development · February 19, 2026 (updated February 24, 2026) · 1 min · 74 words