Cloudflare Docs

Cloudflare Docs

Overview
Concepts
WAF attack score
Uploaded content scanning
Custom rules
Create custom rules in the dashboard
Create custom rules via API
Configure a rule with the Skip action

API examples
Skip options

Common use cases

Allow traffic from search engine bots
Allow traffic from specific countries only
Block Microsoft Exchange Autodiscover requests
Block requests by Threat Score
Challenge bad bots
Exempt partners from Hotlink Protection
Require a specific cookie
Require a valid HMAC token
Require known IP addresses in site admin area
Require specific HTTP headers
Require specific HTTP ports
Stop R-U-Dead-Yet? (R.U.D.Y.) attacks
Update custom rules for customers or partners

Manage custom rules in the dashboard
Custom rulesets
Use the dashboard
Use the API
Firewall rules
Rate limiting rules
Determining the rate
Create in the dashboard for a zone
Create in the dashboard for an account
Create via API
Rate limiting parameters
Rule examples
Best practices
Managed rules
Deploy in the dashboard for a zone
Deploy in the dashboard for an account
Deploy via API
Rulesets reference

Cloudflare Managed Ruleset
Cloudflare OWASP Core Ruleset
Cloudflare Exposed Credentials Check

Create WAF exceptions

Add an exception in the dashboard
Add an exception via API

Log the payload of matched rules

Configure payload logging in the dashboard
View the payload content in the dashboard
Configure payload logging via API
Command-line operations

Generate a key pair
Decrypt the payload content

Handle false positives
Additional tools
IP Access rules

Create a rule
Parameters
Actions

Lists

IP Lists
Bulk Redirect Lists
Create in the dashboard
Use lists in expressions
Lists API

JSON object
Endpoints

User Agent Blocking
Zone Lockdown
Browser Integrity Check
Challenge Passage
Privacy Pass
Security Level
Automated exposed credentials check
How exposed credentials checks work
Configure exposed credentials checks via API
Test your exposed credentials checks configuration
Monitor exposed credentials events
Security Analytics
Security Events
Free plan
Paid plans
Additional information
Reference
Alerts
Phases
Migration guides

Migrating to the new WAF Managed Rules
Firewall rules are becoming custom rules
Deprecation of old rate limiting

Legacy features

WAF managed rules (previous version)

Troubleshooting

Rate Limiting (previous version)

Troubleshooting
Troubleshooting
Bing's Site Scan blocked by a managed rule
Changelog
Scheduled changes
2023-09-04
2023-08-21
2023-08-17 - Emergency
2023-08-07
2023-08-01 - Emergency
2023-07-31
2023-07-10
2023-07-05
2023-06-19
2023-06-14 - Emergency
2023-06-12
2023-06-09 - Emergency
2023-05-22
2023-05-02
2023-04-11
2023-03-20
2023-03-13
2023-03-06
2023-02-27
2023-02-13
2023-02-06
2023-01-30
2023-01-24
2023-01-16
2023-01-09
2022-12-12
2022-11-29
2022-11-14
2022-10-31
2022-10-18 - Emergency
2022-10-17
2022-10-14 - Emergency
2022-10-10
2022-10-03 - Emergency
2022-10-03
2022-09-20 – Emergency
2022-09-12
2022-09-05
2022-08-30
2022-08-22
2022-08-15
2022-08-01
2022-07-25
2022-07-18
2022-07-06
2022-07-05
2022-06-20
2022-06-10 – Emergency
2022-06-07 – Emergency
2022-06-06
2022-06-04 – Emergency
2022-06-03 – Emergency
2022-05-30
2022-05-16
2022-05-10 – Emergency
2022-05-09
2022-04-25
2022-04-20
2022-04-11
2022-04-04 – Emergency
2022-03-31 – Emergency
2022-03-29 – Emergency
2022-03-14
2022-03-07
2022-02-28
2022-02-21
2022-02-14
2022-01-24
2021-12-16 – Emergency
2021-12-14 – Emergency
2021-12-10 – Emergency
2021-11-01
2021-10-25
2021-10-19
2021-10-04
2021-09-06
2021-09-01 – Emergency
2021-08-31
2021-08-23
2021-08-16
2021-07-26
2021-07-19
2021-07-01 – Emergency
2021-06-21
2021-06-14
2021-06-07
2021-06-01
2021-04-21 – Emergency
2021-04-19
2021-03-22
2021-03-08
2021-03-06 – Emergency
2021-03-05 – Emergency
2021-03-01
2020-12-14
2020-12-02
2020-11-16
2020-11-05 – Emergency
2020-11-04 – Emergency
2020-10-19
2020-10-12
2020-10-05
2020-09-28
2020-09-21
2020-09-15
2020-09-07
2020-08-24
2020-09-01
2020-07-27
2020-08-03
2020-07-20
2020-07-07 – Emergency
2020-07-13
2020-06-22
2020-06-15
2020-06-08
2020-05-25
2020-05-11
2020-05-04
2020-04-27
2020-04-20
2020-04-06
2020-03-30
2020-03-23
2020-03-12
2020-03-09
2020-03-02 – Emergency
2020-02-17
2020-02-10
2020-01-27
2020-01-20
2020-01-16 – Emergency
2019-12-16
2019-11-25 – Emergency
2019-11-12
2019-11-07 – Emergency
2019-11-04
2019-10-27 – Emergency
2019-10-23 – Emergency
2019-10-21
2019-10-17 – Emergency
2019-10-14
2019-10-07
2019-09-30
2019-09-26 – Emergency
2019-09-16
Historical

2019-11-04

Ruleset	Rule	Description	Previous Action	New Action
Cloudflare Specials	100139A	Improve XSS detection. Merge 100139A_BETA into 100139A.	Disable	Disable
Cloudflare Specials	100139B	Improve XSS detection. Merge 100139B_BETA into 100139B.	Block	Block
Cloudflare Specials	100139C	Improve XSS detection. Merge 100139C_BETA into 100139C.	Block	Block
Cloudflare Specials	100139D	Improve XSS detection	N/A	Block
Cloudflare Specials	100173	Improve XSS detection	N/A	Block
Cloudflare Specials	100030SVG	Disable outdated XSS rule by default	Block	Disable
Cloudflare Specials	100021C	Disable outdated XSS rule by default	Block	Disable
Cloudflare Specials	100021CE	Disable outdated XSS rule by default	Block	Disable
Cloudflare Specials	100021CB	Disable outdated XSS rule by default	Block	Disable
Cloudflare Specials	100021D	Disable outdated XSS rule by default	Block	Disable
Cloudflare Specials	100107	Disable outdated XSS rule by default	Block	Disable
Cloudflare Specials	100030	Disable outdated XSS rule by default	Block	Disable
Cloudflare Specials	100030ARGS_STRICT	Disable outdated XSS rule by default	Challenge	Disable
Cloudflare Specials	100021	Disable outdated XSS rule by default	Challenge	Disable
Cloudflare Specials	100021B	Disable outdated XSS rule by default	Block	Disable
Cloudflare Specials	100021E	Disable outdated XSS rule by default	Challenge	Disable
Cloudflare Specials	100090	Disable outdated XSS rule by default	Block	Disable
Cloudflare Specials	100091	Disable outdated XSS rule by default	Block	Disable
Cloudflare Specials	100091B	Disable outdated XSS rule by default	Block	Disable
Cloudflare Specials	100092	Disable outdated XSS rule by default	Block	Disable
Cloudflare Specials	100170	Improve XSS detection. Merge 100170_BETA into 100170.	Block	Block
Cloudflare Specials	100021H	Disable outdated XSS rule by default	Block	Disable
Cloudflare Specials	100044	Disabled obsolete rule by default. Merge 100044_BETA into 100044.	Block	Disable
Cloudflare Specials	100174	Improve XSS detection	N/A	Block
Cloudflare Specials	100135B	Reduced false positive rate. Merge 100135B_BETA into 100135B.	Block	Block