Skip to content
Cloudflare Docs

Update custom rules for customers or partners

You may want to adjust your custom rules to increase access by customers or partners.

Potential examples include:

  • Removing rate limiting for an API
  • Sharing brand assets and marketing materials

Use ASN in custom rules

Section titled “Use ASN in custom rules”

If a customer or partner is large enough, you could set up a custom rule based on an autonomous system number (ASN) ↗.

Allow traffic by ASN

Section titled “Allow traffic by ASN”

This example uses:

Example rule:

  • Expression: (ip.src.asnum eq 64496 and cf.bot_management.score gt 30)
  • Action: Skip:
    • All remaining custom rules

Adjust rules by ASN

Section titled “Adjust rules by ASN”

This example uses:

  • The ip.src.asnum field to specify the general region.
  • The cf.threat_score dynamic field to ensure requests are not high-risk traffic.

If a request meets these criteria, your custom rule skips User Agent Blocking rules.

  • Expression: (ip.src.asnum eq 64496 and cf.threat_score lt 14)
  • Action: Skip:
    • User Agent Blocking

Use IP addresses in custom rules

Section titled “Use IP addresses in custom rules”

For smaller organizations, you could set up custom rules based on IP addresses.

Allow traffic by IP address

Section titled “Allow traffic by IP address”

This example:

  • Specifies the source IP address and the host.
  • Uses the cf.bot_management.score field to ensure requests are not high-risk traffic.

Example rule:

  • Expression: (ip.src eq 203.0.113.1 and http.host eq "example.com" and cf.bot_management.score gt 30)
  • Action: Skip:
    • All remaining custom rules

Adjust rules by IP address

Section titled “Adjust rules by IP address”

This example specifies the source IP address and the host.

If a request meets these criteria, it will skip rate limiting rules.

  • Expression: (ip.src eq 203.0.113.1 and http.host eq "example.com")
  • Action: Skip:
    • All remaining custom rules