Netcat Portscanner: Unterschied zwischen den Versionen

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=with netcat=
 
=with netcat=
*nc  -zv rin.tuxmen.de 20-81
+
*nc  -zv 10.11.12.3 20-81
  rin.tuxmen.de [136.243.187.65] 80 (http) open
+
  10.11.12.3 [10.11.12.3] 80 (http) open
  rin.tuxmen.de [136.243.187.65] 53 (domain) open
+
  10.11.12.3 [10.11.12.3] 53 (domain) open
  rin.tuxmen.de [136.243.187.65] 25 (smtp) open
+
  10.11.12.3 [10.11.12.3] 25 (smtp) open
  rin.tuxmen.de [136.243.187.65] 21 (ftp) open
+
  10.11.12.3 [10.11.12.3] 21 (ftp) open
 +
 
 
=script with netcat=  
 
=script with netcat=  
 
<pre>
 
<pre>

Aktuelle Version vom 14. November 2017, 06:48 Uhr

with netcat

  • nc -zv 10.11.12.3 20-81
10.11.12.3 [10.11.12.3] 80 (http) open
10.11.12.3 [10.11.12.3] 53 (domain) open
10.11.12.3 [10.11.12.3] 25 (smtp) open
10.11.12.3 [10.11.12.3] 21 (ftp) open

script with netcat

#!/bin/bash
test $# -eq "3" || { echo "usage: $0 IP PORTSTART PORTEND" ; exit 1 ;}
for ((x=$2;x<=$3;x++))
do
nc -w 1 -z  $1 $x && echo "$x open"
done