hacking attempt.. how do i stop this

Discussion in 'Installation/Configuration' started by findafriend, Mar 10, 2011.

  1. findafriend

    findafriend New Member

    Hi

    There have been a hacking attempt.... how do i avoid this... my log file says :

    Mar 10 03:35:42 brugtbazar sshd[23511]: reverse mapping checking getaddrinfo for ip101-74.introweb.nl [80.65.101.74] failed - POSSIBLE BREAK-IN ATTEMPT!
    Mar 10 03:35:42 brugtbazar sshd[23511]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=80.65.101.74 user=root
    Mar 10 03:35:44 brugtbazar sshd[23511]: Failed password for root from 80.65.101.74 port 37479 ssh2
    Mar 10 03:35:44 brugtbazar sshd[23514]: reverse mapping checking getaddrinfo for ip101-74.introweb.nl [80.65.101.74] failed - POSSIBLE BREAK-IN ATTEMPT!
    Mar 10 03:35:44 brugtbazar sshd[23514]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=80.65.101.74 user=root
    Mar 10 03:35:46 brugtbazar sshd[23514]: Failed password for root from 80.65.101.74 port 37858 ssh2

    The idiot decided first top stop at :

    Mar 10 03:47:15

    BR
     
    findafriend, Mar 10, 2011
    #1
  2. till

    till Super Moderator Staff Member ISPConfig Developer

    These are quite normal and nothing to really worry about if you use a long password which consists of chars in upper and lowercase and numbers. These attacks occur to internet servers all day long.

    You can use fail2ban to stop such attacks after a few failed login attempts by blocking the attacker automatically on network level.


    So he did stop quite fast, such attachs may last hours or even days.
     
    till, Mar 10, 2011
    #2

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