> ## Documentation Index
> Fetch the complete documentation index at: https://docs.chainstack.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Chainstack updates: June 27, 2025

> You can now configure access rules on Chainstack node endpoints to restrict requests by HTTP Origin header values or IP address allowlists per node.

**Security**. You can now add [access rules](/docs/access-rules) to your node endpoints to restrict access based on HTTP `Origin` header values or IP addresses.