PHP port scanner

Anon

Some time ago I read an article on phpBuilder (i think) on writing a port scanner, but I can not find it now. Did anyone else read this article where has it gone?.

The article included an example of writing a scanner in C and compared it with writing it in php.

If not any suggestion on alternative articles, I now need to write a scanner type app in C and do not have a clue where to start.

Many thanks

Dave...

roboteddy

Well, for starters, that article wasn't on this site (unless they removed it). Uhm, all I can say is that a PHP port scanner would be terribly slow. If you have the need to display the results of a security scan on your network from an internet page, I would suggest using the passthru() function and a conventional scanner.

Ted

Anon

I have found a copy of the code from the article - anyone know who this belongs to?

<!doctype html public "-//W3C//DTD HTML 4.0 //EN">

<head>
<title>Title here!</title>
</head>
<body>
<?

// port.php,v 1.3 2001/08/21 19:54:19 barce Exp
//
// A basic port scanner written in PHP.
//

/*************************************

$min is the first port scanned
$max is the last port scanned

*************************************/
$timeout = 1; // Use a timeout with a short duration

if ($pressed)
{

set_time_limit(0);

echo "Scanning $target" . "...<br>\n"; flush();
for ($i = $min; $i <= $max; $i++) {
/******************************************************

Open a Socket Connection with fsockopen

******************************************************/
$handle = fsockopen($target, $i, $errno, $errstr, $timeout);

     /*********************************************************
      *                                                       *
      *        Test connection to see if port is open         *
      *                                                       *
      *********************************************************/

if (!$handle) {
echo "No connection at port $i<br>\n"; flush();
}
else {
echo "Open port at $i<br>\n"; flush();
fclose($handle);
}

}
}
else
{

/*********************************************************
 *                                                       *
 *        A form to ask user for a host to target        *
 *                                                       *
 *********************************************************/

echo "<form method=post action=\"$PHP_SELF\">\n";
echo "Host to portscan: ";
echo "<input type=text name=target><br>\n";
echo "Starting port number: ";
echo "<input type=text name=min value=1><br>\n";
echo "Ending port number: ";
echo "<input type=text name=max value=113><br>\n";
echo "<input type=submit name=pressed value=' Scan '>\n";
echo "<input type=reset name=clear value=' Clear '>\n";
echo "</form>\n";
}
?>
</body>