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    SubjectRe: kernel.org status: hints on how to check your machine for intrusion
    On 10/01/2011 11:30 PM, Henrique de Moraes Holschuh wrote:
    > Hmm, and a last tip:
    >
    > Always use the "AllowUsers" or "AllowGroups" directive in sshd_config to
    > only allow access to whitelisted users/groups and deny to every other user
    > (including system ones).
    >
    Also nice is a dumb iptables filter with the recent match. 2 lines total.
    http://www.linux-noob.com/forums/index.php?/topic/1829-ssh-rate-limit-per-ip-new-method/

    But denyhosts does blacklisting for sshd automatically. :)
    http://denyhosts.sourceforge.net/faq.html

    ~Maarten


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