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Server Security Concerns

Discussion in 'Security' started by xbaha, Jan 2, 2015.

  1. xbaha

    xbaha Member

    Sep 30, 2014
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    was very disappointed when i thought i have a solid server..
    i use 2GB 2x core cpu, but when i used a tool called switchblade that simulates a ddos attack,
    with only 400 connections, in one minute, my server cpu %wa went up 100% for about 5 minutes till connections cleared, and i couldn't access anything!!! how easy was this to bring any web-server down!
    if it was real attack, i might not be able even to log-in just to know what's happening!

    i am not an expert, but i already have mod security installed, didn't really help.
    i tried to add a line
    SecReadStateLimit 25
    to the config file, but it seems it's doing nothing.
    i tried to look for mod_qos , but i am on 2.4 Apache, couldn't locate it anywhere!

    some one can give basic guide for at least protecting from simple ddos attacks please!
  2. dalem

    dalem Well-Known Member PartnerNOC

    Oct 24, 2003
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    PORTFLOOD settings in csf
    or dos deflate (D)DoS Deflate -
    add actual mod_security rules that will block such an attack

    I tested a server with it it did not do a whole lot flooded Apache but my IP was white listed a real attackers IP would have been banned
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  3. cPanelMichael

    cPanelMichael Technical Support Community Manager Staff Member

    Apr 11, 2011
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    Hello :)

    I suggest using a firewall management utility such as CSF to help mitigate attacks, and you may also need to invest in a hardware firewall at your data center to help prevent more robust attacks on your server.

    Thank you.
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