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From: Ossian Vitek (ian.Vitek_at_ixsecurity.com)
Date: Mon Nov 25 2002 - 15:55:24 CST

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    The scan can go on for a while if you are scanning firewalled hosts.
    There are nmap switches to increase ports per second, but how much?

    I have added a switch that prints two lines of statistics.
    The new ?c switch guesses how long time the scan will take.
    Output example:
    Starting nmap V. 3.10ALPHA3 ( www.insecure.org/nmap/ )
    Tried: 192 (150 resends)
    P/S: 12.00 ETS: 9

    The ?c switch shows how many ports that has been tested, resends, ports per
    second and the estimated remaining time of scan.
    The patch works on nmap-3.10ALPHA3 and nmap-3.10ALPHA4. It will probably
    work on other nmap-3.10 releases.

    Patch with:
    tar -xvzf nmap-3.X.tgz
    cd nmap-3.X
    patch -p1 < PATH_TO/nmap-3.10ALPHA4_statistics-1.diff

    nmap-3.10ALPHA4_statistics-1.diff is a nmap hack. It is not an official
    nmap patch.
    Feel free to forward it if you like it.

    //Ian Vitek, iXsecurity
    ian.vitekixsecurity.com

    (See attached file: nmap-3.10ALPHA4_statistics-1.diff)

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