Cherry-pick #16907 to 7.x: [SIEM][CEF] Add support for Check Point devices #17111
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* Make CEF key name mapping case-insensitive There's some case inconsistency in CEF docs (i.e. C6a4Label). Better to ignore case when mapping keys to full names. * Add missing custom CEF extensions This adds: - `deviceCustomIPv6Address2(Label)`: Only 1, 3 and 4 were expected. - `flexNumber[12](Label)`: These two alternative custom numbers were dropped after V23 of the spec, but still used by some vendors. [Maybe unnecessary] changes: - Changed the case of `DeviceCustomNumber2` from uppercase as documented) to lowercase to align with the other fields. * CEF module: Support Check Point devices This adds a new ingest pipeline and fields to populate from Check Point CEF logs. Closes elastic#16041 (cherry picked from commit f6fde2e)
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Cherry-pick of PR #16907 to 7.x branch. Original message:
This PR adds a new ingest pipeline and fields to populate from Check Point CEF logs.
Additional changes to the ECS processor:
c6a2/deviceCustomIPv6Address2.flexNumber[12]extensions. Used by Check Point. Dropped from CEF after V23.DeviceCustomNumber2to align with the other fields.Closes #16041