check_http is the HTTP probe from the Monitoring Plugins project. Nagios, Icinga and similar systems run it to test that a site responds, so requests can come from many unrelated operators. This entry covers all versions.

At a glance

Operator: Monitoring Plugins Development Team
Type: Monitoring

How Centinel checks it

User agent: The request calls itself this crawler. Anyone can send the same string.

check_http publishes nothing Centinel can check a source against, so a match reports the name and leaves the source unconfirmed. The match tokens, verification domains, and address feeds are not published here.

Allowing or blocking it

The crawler object in the /validate response sets access_allowed to true only for a verified source that your tenant allowlists. A policy rule can allow or block this crawler by its category, Monitoring.

Back to the crawler catalog