oh, ok, I think I understand a little more now. I was using f2b-regex cmd in console to test it, but without the host_info alias (as provided by the "before INCLUDE"), it won't return any matches?
Is it because f2b-regex needs to return a host portion to be considered a match? I mean, I can't just use it as a usual regular expression checker to find a word or phrase, because without the host info, it will not return any matches form the cmd line? I am also testing it in a file under filter.d, but I can't find any matches in the log. 2. UPGRADING I would like to know if there are instructions how to UPGRADE a f2b installation, so my custom rules can be used. I tried to read the manual / doc quickly, but did not see a section on how to upgrade, but maybe my eyes missed it. 3. COMMENTS INTO LOG The next thing I will need to learn is how to use an action to write comments into the log, so instead of just seeing "FOUND [ip address], I can add comments about the message / domain/ TO, FROM, etc. Thank you.
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