<html><head><meta name="color-scheme" content="light dark"></head><body><pre style="word-wrap: break-word; white-space: pre-wrap;">#!/usr/bin/perl

use Getopt::Std;
%options=();
getopts("a:b:c:d:f:e:h",\%options);
# like the shell getopt, "d:" means d takes an argument
# print "-o $options{o}\n" if defined $options{o};

 
if ( defined $options{h}) {
	&amp;usage();
}

  
main_routine();


sub main_routine() {

$source_ip 	= $options{a};
$source_dst_ip 	= $options{b};
$dest_ip 	= $options{c};
$dest_dst_ip 	= $options{d};
$payload_file 	= $options{f};
$packet_count	= $options{e};

 # generate the amounts of packets given by $paket_count

	for ($i=0;$i&lt;=$packet_count;$i++) {
		
		# now create the packet and send it
		system("nemesis icmp -qE -B $source_ip -b $source_dst_ip -D $dest_ip -S $dest_dst_ip -I 4 -T 250 -P $payload_file");
	}

} # main_routine();


sub usage() {

    print STDERR &lt;&lt; "EOF";

    This program creates and sends out a icmp echo request.
    With "tcpdump|grep SOURCE_IP" you get something like that in return:
    
    nemesis icmp -qE -B 216.239.59.104 -b 81.169.176.103 -D 216.239.59.104 -S 81.169.176.103 -P test.txt
    tcpdump|grep 216.239.59.104
    tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
    listening on eth0, link-type EN10MB (Ethernet), capture size 96 bytes
    11:57:16.859954 IP h5880.serverkompetenz.net &gt; 216.239.59.104: icmp 16: echo request seq 13840
    11:57:16.912369 IP 216.239.59.104 &gt; h5880.serverkompetenz.net: icmp 16: echo reply seq 13840
    11:58:26.296843 IP h5880.serverkompetenz.net &gt; 216.239.59.104: icmp 16: echo request seq 23886
    11:58:26.349186 IP 216.239.59.104 &gt; h5880.serverkompetenz.net: icmp 16: echo reply seq 23886

    usage: $0 [-habcd] [-f file]

     -h	        : this (help) message
     -a		: origninal source ip address
     -b		: origninal destination ip address
     -c		: source ip address
     -d		: destination ip adress
     -f file    : file containing tcp payload of the packet
     -e count	: count paketes are generated and send

  example: $0 -a 141.55.123.24 -b 151.23.45.67 -c 141.55.123.24 -d 151.23.45.67 -f payload.txt

EOF
        exit;
}
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