checkmk-active-httpv2 is the default user agent of the check_httpv2 active HTTP check plugin shipped with Checkmk (Checkmk GmbH, Munich; formerly Tribe29 / check_mk). It is a Rust rewrite of the legacy check_http and performs uptime, latency, status-code, content, and TLS certificate checks on HTTP/HTTPS endpoints from a customer's self-hosted Checkmk monitoring server.

At a glance

Operator: Checkmk
Type: Monitoring

How Centinel checks it

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

checkmk-active-httpv2 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