by DanDawson 0 (0 reviews)

ProbeGuard 404 Firewall for Cloudflare

Name: ProbeGuard 404 Firewall for Cloudflare
Author: DanDawson

Monitors 404 requests and blocks or challenges abusive IPs at the Cloudflare edge using IP Access Rules.

ProbeGuard 404 Firewall for Cloudflare ranks #26,335 among WordPress.org plugins with 20+ active installations, is #1,582 of 5,058 in the Security category, and was last updated Oct 19, 2026. Data from WordPress.org, refreshed twice daily — see methodology.

Compatible with WP 7.1.4

v2.0.3 Current Version v2.0.3

Updated 2 weeks ago Last Update on 19 Oct, 2026

Refreshed 1 week ago Last Refreshed on

#1,582 of 5,058 in Security Top 50% by installs Actively maintained

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Rank

#26,335

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Active Installs

20+

+1900%

KW Avg Position

N/A

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Downloads

329

+7 today

Support Resolved

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Rating

Review 0 out of 5

0 (0 reviews)

Next Milestone 30

Total Progress 80%

20+ 30+

3,590

Ranks to Climb

Growth Needed

8,000,000

Active Installs

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Plugin Details

Version: 2.0.3
Last Updated: Oct 19, 2026
Requires WP: 5.3+
Tested Up To: 7.1.4
PHP Version: 7.2 or higher
Author: DanDawson

Support & Rating

Rating: ☆ ☆ ☆ ☆ ☆ 0
Reviews: 0
Support Threads: 0
Resolved: 0%

Keywords

404 block bots Brute Force cloudflare firewall

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Frequently Asked Questions

Common questions about ProbeGuard 404 Firewall for Cloudflare

No. It uses IP Access Rules, which are available on all plans. Cloudflare enforces an account-level quota on the number of rules.

Each line is matched against the request path, the path plus query string, and both of those prefixed with the requested host. That means an entry can be a path (/tracking/*), a host and path (tracking.example.com/tracking/*), a "contains anywhere" pattern (*tracking.example.com*, which also matches that text in a path or query string) or a pasted URL. Use * for wildcards; a pattern with no wildcard must match exactly. Entries saved by earlier versions gain a trailing * on upgrade so previous prefix behaviour is preserved. My email click-tracking links are logged as 404s They are 404s, so they are logged. Hosts that rewrite links in outgoing mail serve them from a tracking subdomain, so add an entry such as /tracking/* or tracking.example.com/* to the whitelist; matching includes the requested host, so host patterns work too. Nothing host-specific is whitelisted by default.

Blocking falls back to running inline if the scheduled event cannot be created, but expiry, log pruning and diagnostics rely on the scheduled task. Server-level cron and external schedulers work; the plugin warns only when its own maintenance task has not run for two hours, and the warning can be dismissed permanently.

404 records are kept for the configured retention period (1-168 hours, 12 by default). Expired block records are removed a day after expiry. Diagnostic warnings and errors are kept for 7 days and capped at 500 rows. Credentials are redacted from diagnostic output.

Either works. An account token (Manage Account -> Account API Tokens) belongs to the Cloudflare account, so it keeps working when the user who created it loses access, which makes it the better default. A user token (My Profile -> API Tokens) is the only option for a zone reached through an account you are not a member of. One token can serve several sites if its Zone Resources include each zone.

It gets progressively harder to shake off. While an IP is blocked, Cloudflare handles its requests at the edge, so they never reach WordPress to be counted — which is why a returning IP is re-blocked on its first 404 instead of having to earn the full threshold again, and why each successive block within the "Remember offenders" window is twice as long as the last, up to the "Maximum block duration" ceiling. If a 404 does get through while a block is live, the existing block is extended rather than duplicated. Set "Remember offenders" to 0 to treat every block as a first offence.

Deactivating cancels every scheduled task and, unless "Keep Cloudflare blocks when the plugin is deactivated" is enabled in Settings, deletes the Cloudflare access rules the plugin created — nothing would remain to expire them otherwise. Deleting the plugin removes its rules, database tables and options.