Re: -T2 option of nmap 6.47svn doesn't work.

[Daniel Miller <bonsaiviking () gmail com>]

Hongyi,

If you look at the error messages you get when you combine
--min-parallelism with -T2, it's pretty simple:

$ nmap --min-parallelism 200 -T2 localhost
Warning: Your --min-parallelism option is pretty high!  This can hurt
reliability.
--min-parallelism=200 must be less than or equal to --max-parallelism=1
QUITTING!

-T2 means --max-parallelism=1 --scan-delay 400ms

Dan

On Wed, Mar 25, 2015 at 9:18 PM, Hongyi Zhao <hongyi.zhao () gmail com> wrote:

> Hi all,
>
> I use the following script to scan some socks5 proxies with nmap 6.47svn:
>
> ----------- begin -------------
> #!/bin/bash
> # store
> if [[ -f log.nmap ]]; then  rm log.nmap; fi
> socks_found="log.nmap"
>
> # ports to scan
>
> ports="10313,1080,1081,11111,12316,13023,13253,13722,14835,15468,15747,16122,17481,17655,1800,18067,18891,19272,20085,20104,20515,2214,2235,24285,24528,24571,25103,25462,25501,26518,27279,29016,29392,30143,31835,32979,33952,33958,36893,37321,38758,39939,40018,40127,40864,40911,41010,41453,41574,43358,44128,44972,45088,45199,45550,45727,45823,46662,47806,49497,49832,50834,51533,51864,52799,60088,7172,8020,8080,9999"
>
> Min_Hostgroup=20
> Min_Parallelism=$((10*$Min_Hostgroup))
> Max_Retries=10
> Host_Timeout=1800
>
> nmap -T4                                                              \
>      ${Min_Hostgroup+--min-hostgroup "$Min_Hostgroup"}              \
>      ${Min_Parallelism+--min-parallelism "$Min_Parallelism"}        \
>      ${Max_Retries+--max-retries "$Max_Retries"}                    \
>      ${Host_Timeout+--host-timeout "$Host_Timeout"}                 \
>      -n -Pn                                                           \
>      --script "+socks-open-proxy and not http-*"                      \
>      -p $ports                                                        \
>      -iL host.nmap                                                    \
>      2>/dev/null                                                      \
>      | tee -a $socks_found
> ----------- end ---------------
>
> In my above script, I use -T4 time template, when I try to use -T2, the
> nmap doesn't do anything at all and exited directly.
>
> Another question, even though using -T3 or -T4, nmap can work for my
> case, it will give very few results compared to the results of other
> similar tools, say, "Socks Proxy Checker 1.14" -- see here for detail:
> http://www.socksproxychecker.com/
>
> P.S. In the above tests, I use the same socks5 proxies set as the input
> data for testing with nmap 6.47svn and Socks Proxy Checker.
>
> Any hints?
>
> Regards
> --
> .: Hongyi Zhao [ hongyi.zhao AT gmail.com ] Free as in Freedom :.
>
> _______________________________________________
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> https://nmap.org/mailman/listinfo/dev
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