Building the Network You Need with OpenBSD's PF: BSDCan, Ottawa May 6th, 2009
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# Turning away the brutes

You have all seen this:

    Sep 26 03:12:34 skapet sshd[25771]: Failed password for root from
    200.72.41.31 port 40992 ssh2
    Sep 26 03:12:34 skapet sshd[5279]: Failed password for root from
    200.72.41.31 port 40992 ssh2
    Sep 26 03:12:35 skapet sshd[5279]: Received disconnect from
    200.72.41.31: 11: Bye Bye
    Sep 26 03:12:44 skapet sshd[29635]: Invalid user admin from
    200.72.41.31
    Sep 26 03:12:44 skapet sshd[24703]: input_userauth_request:
    invalid user admin
    Sep 26 03:12:44 skapet sshd[24703]: Failed password for invalid user
    admin from 200.72.41.31 port 41484 ssh2
    Sep 26 03:12:44 skapet sshd[29635]: Failed password for invalid user
    admin from 200.72.41.31 port 41484 ssh2
    Sep 26 03:12:45 skapet sshd[24703]: Connection closed by 200.72.41.31
    Sep 26 03:13:10 skapet sshd[11459]: Failed password for root from
    200.72.41.31 port 43344 ssh2