Hi mmoermans,
Since you mentioned you are using version 4.1 of OPSEC, when you noticed outage time, if you login to the Splunk UI and go to configuring inputs in the checkpoint add-on - you will see "StartTime". You can change that to the start time you want to pull the logs. (it can only go back to the beginning of the log fw.log on checkpoint side, but if the file is already rolled off on that side, you wouldn't be able to get those logs)
You can have a standby Heavy forwarder with the same configurations (connections,certs, inputs etc) of the active forwarder, except in the case of outage, you can bring it online and have the startTime configured on the standby and start the forwarder. Basically you just need to configure the stanby similar to active and you only run it when needed
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