Check http web service: support mTLS Client Certificate Auth
Client Certificate Based Auth for HTTPS mTLS from WATO.
Suggest the UI implementation also allows PEM format paste input or optional file path location.
Optionally consider support for different CA if different from CMK host or to test specific authority.
The only way I can currently get close to this functionality is using the deprecated http nagios checks via command line and passing in cert paths. These options are not available.
Old (8yr) nagios based thread that shows a setup that works - https://forum.checkmk.com/t/check-mk-english-http-check-how-to-configure-https-client-certificate/12734
However these are really clunky and inflexible.
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20 Nov, '25
Mohamed Saleh AdminHi Paul,
Thanks for posting your idea!
I made minor edits to the title so the idea becomes more searchable by users. Let me know if that's not capturing the meaning you intended.
To get a better picture of the use case, can you give an example of the endpoint you want to be able to monitor which this feature would enable?