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       knocker - An easy to use network security port scanner


       knocker --host <host> [OPTION]


       knocker  is  a simple and easy to use TCP security port scanner written
       in C using pthreads which is able to  analyze  hosts  and  all  of  the
       different services started on them.


       -H, --host
              host name or numeric Internet address to scan

       -P, --port
              port number to scan (single port scan only)

       -SP, --start-port
              port number to begin the scan from

       -EP, --end-port
              port number to end the scan at

              uses the last scanned host as target

              performs again the last port scan

       -q, --quiet
              disable console output and logs to file.

       -lf, --logfile <logfile>
              log the results to a specified file.

       -nf, --no-fency
              disable fency output

       -nc, --no-colors
              disable colored output

              let the user configure knocker

       -h, --help
              display this help and exit

       -v, --version
              output version information and exit


       To run this program the standard way type:

       knocker --host

       If you want to specify a port range to scan:

       knocker --host thehost  --start-port 1 --end-port 2600


       knocker -H thehost  -SP 1 -EP 2600

       To scan a single port:

       knocker -H thehost --port 21

       To run this program not using colors (if your terminal does not support

       knocker --host --no-colors

       To run this program run in background and have the results written in a
       log file:

       knocker --host --quiet &


       The    latest    version    of   this   program   can   be   found   at


       See the BUGS file in the knocker source package for  a  list  of  known
       bugs.  Report bugs to <>


       knocker is written by Gabriele Giorgetti <>


       Copyright © 2001,2002 Gabriele Giorgetti
       This is free software; see the source for copying conditions.  There is
       NO warranty; not even for MERCHANTABILITY or FITNESS FOR  A  PARTICULAR

                                 MAY 24, 2002