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Thread: Retroactive Port Scanning

  1. #1
    Junior Member
    Join Date
    Sep 2017

    Retroactive Port Scanning


    I was wondering whether there was a way to scan for the PID of a process that was listening on a port previously but isn't listening any more. I used lsof -i but the port doesn't show up under this command anymore bc according to the Network Utility Port Scan, the port in question is no longer listening. Is there anyway to go back and find the PID of this port?

    Thank you

  2. #2
    Administrator Philip's Avatar
    Join Date
    May 1999
    Jacksonville, Florida
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    I don't think there is a log for that, unless the firewall keeps some type of connectivity logs.

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