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large cPHulk failed login attemps

Discussion in 'Security' started by gandoura, Jun 7, 2014.

  1. gandoura

    gandoura Registered

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    Hello evebody,

    I am getting large (every 5 minutes) failed login attemps on my server

    the concerned ips are trying to connect to accounts like system

    any idea to find from where are they trying to connect (ssh ? cpanel interface ? etc...)

    and second question: letting cPHulk block them is sufficient of should i block them via iptables too ?

    best thanks for any help.
     
  2. Felipe M.

    Felipe M. Member

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    Hello Gandoura

    You can see system logs for this problem, and block malicious IP

    Please see

    Code:
    tail -n 30 /var/log/secure 
    Code:
    cat /usr/local/cpanel/logs/login_log |grep "FAILED LOGIN" 
    I recommend to use ConfigServer Security & Firewall you can block automatically Brute-force attacks for all types.

    Thanks
     
  3. Ekushey

    Ekushey Member

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    CSF is indeed very useful, years ago when I started having similar problems it saved from a lot of headaches -- a little side-effect is getting yourself locked out sometimes, though. ;)
     
  4. cPanelMichael

    cPanelMichael Forums Analyst
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    Hello :)

    Yes, you can review log files like the ones referenced in the first reply to determine if particular services are the target. cPHulk will not actually block the IP address from attempting the login, but it ensures authentication fails. You should utilize a firewall management tool such as CSF to block the offending IP address.

    Thank you.
     
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