# Restrict access with IP blocking by CIDR range

**Published:** December 21, 2023 | **Authors:** Natalie Altman, Tristan Siegel

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[Vercel Firewall](https://vercel.com/docs/security/vercel-firewall) protects your application from DDoS attacks and unauthorized access.

Enterprise teams now have increased security with the ability to control traffic and restrict access through static IP addresses or entire network CIDR ranges.

Stay secure by blocking entire subnets, or restricting access from untrusted networks, to prevent attacks against your applications.

[Learn more in our documentation](https://vercel.com/docs/security/vercel-waf/ip-blocking) or [contact our sales team](https://vercel.com/contact/sales) to upgrade to Enterprise.

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📚 **More updates:** [View all changelog entries](/changelog/sitemap.md) | [Blog](/blog/sitemap.md)