docs: update fail2ban example (#2661)
Updates the fail2ban examples to align with new messages. Fixes #2649.pull/2666/head
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@ -246,13 +246,13 @@ typically located at `/etc/fail2ban/filter.d`.
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# only contains a single IP address (the one from the end-user), and not the proxy chain
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# (it is misleading: usually, this is the purpose of this header).
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# the failregex rule counts every failed login (wrong username or password) and failed TOTP entry as a failure
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# the failregex rule counts every failed 1FA attempt (first line, wrong username or password) and failed 2FA attempt
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# second line) as a failure.
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# the ignoreregex rule ignores debug, info and warning messages as all authentication failures are flagged as errors
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[Definition]
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failregex = ^.*Error while checking password for.*remote_ip=<HOST> stack.*
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^.*Credentials are wrong for user .*remote_ip=<HOST> stack.*
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^.*Wrong passcode during TOTP validation.*remote_ip=<HOST> stack.*
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failregex = ^.*Unsuccessful 1FA authentication attempt by user .*remote_ip="?<HOST>"? stack.*
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^.*Unsuccessful (TOTP|DUO|U2F) authentication attempt by user .*remote_ip="?<HOST>"? stack.*
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ignoreregex = ^.*level=debug.*
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^.*level=info.*
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