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gav (2710)

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Hacker in NYC.

Journal of gav (2710)

Thursday June 10, 2004
07:51 AM

script kiddy scum

[ #19178 ]

Some bright spark decided to launch a dictionary attack against my two FTP servers last night, attempting 16,901 logins on each server. The only real harm done was that it generated about 5 meg of logs that logwatch dutifully emailed to me this morning and Apple Mail didn't appreciate.

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  • Too bad there isn't some way to disable the ftp server for 10 to 15 minutes after 3 bad login attempts.
    That would certainly slow down someone attempting this kind of crap.
    • I guess I could write something that looked at the logs and then used iptables to ban that IP, but that seems too much like hard work :)
      • Basically, a rumplestiltskin attack on your FTP. Have something watch the logs, and when it sees N failed logins from an IP, blackhole the IP. Search Google, you should be able to find a basic Perl script which does it with mail logs and not hard to modify.

        Or, turn off FTP and make people scp :-)