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    [ubuntu] Re: list unsuccessful connection attempts

    It only does what you tell it to do. If you change where it is supposed to look and that doesn't match what it thinks, whose fault is that?

    fail2ban is a generic tool for watching logs,...
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    [ubuntu] Re: list unsuccessful connection attempts

    No. The internet isn't dumb. They trivially find ssh on any ports. For my home system, I don't listen on the public IP on port 22/tcp either. If I did, the numbers would be 1000x higher.
    ...
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    [ubuntu] Re: list unsuccessful connection attempts

    Depends on the system. For my systems that don't have internet, but do have ssh, I still have fail2ban installed as added protection against my own stupidity. Also, if you've changed the defaults...
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    [ubuntu] Re: list unsuccessful connection attempts

    fail2ban logs this. The script that provided my summary above just counts lines, but it looks for IP addresses.


    echo "Total Bans:"
    egrep NOTICE /var/log/fail2ban.log* |egrep Ban | egrep -o...
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    [ubuntu] Re: list unsuccessful connection attempts

    You can enable firewall logging, but beware, you will quickly fill up all storage with that. Monitoring every port that does nothing bad to the overall security of your system isn't an effective use...
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