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could a genuine web session cause port scans

Discussion in 'Security' started by keat63, Nov 30, 2016.

  1. keat63

    keat63 Well-Known Member

    Nov 20, 2014
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    I see poert scan errors daily, when these originate from a foreign country, i tend not to be too concerned, as CSF blocked them.
    But when these are from the UK, i often wonder if a legitimate customer could have been blocked.

    Could a normal web session cause these errors ?

    *Port Scan* detected from (GB/United Kingdom/Gloucestershire/Gloucester/ 6 hits in the last 55 seconds - *Blocked in csf* for 86400 secs [PS_LIMIT]
  2. cPanelMichael

    cPanelMichael Technical Support Community Manager Staff Member

    Apr 11, 2011
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    I have seen reports in the past where it's been hit by legitimate users:

    *Port Scan* detected *Blocked in csf* for 3600 secs [PS_LIMIT] - ConfigServer Community Forum

    You may also find this third-party URL helpful for more information on how this CSF option works:

    CSF *Port Scan* detected - shared hosting

    You could search additional log files on your system (e.g. /usr/local/cpanel/logs/access_log) for the specific IP address to see if it's accessed other services in the past.

    Thank you.
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