Which port opening (on Cribl and Graylog) is needed such as source and destination, unidirectional or bi-directional.
Question
Which ports are needed to be opened on Cribl and Graylog?
Cribl feeds the data to the default ports supported by Graylog using the webhook (https://docs.cribl.io/stream/destinations-webhook|https://docs.cribl.io/stream/destinations-webhook).
You just need to configure graylog to listen on the port, it does not need to be no-directional.
If they setup port 9000 to receive data, then cribl will be able to send to that port.
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