This may be a duplicate post, BUT I've not seen any answer that correctly resolves this.
I'm trying to find a php script that can correctly determine the state of a TCP or UDP port.
I've tried several of the ones I've found online and they all return the wrong results. EG: On my local network I have ports 5000 UDP & 5060 TCP/UDP open and routing correctly.
If I run a test via http://www.ipfingerprints.com/portscan.php or GRC Shields Up then the correct results are returned, but all of the PHP Scripts I've tried fail and show the ports as closed.
I'm running the php script via my hosted account and trying to scan and test my own network.
This is one of the scripts I've tried:
<html>
<head>
<?php echo "<title>Port Scanning " . $_GET['host'] . "</title>"; ?>
</head>
<body>
<?php
ini_set('display_errors', 0);
if(isset($_GET['host']) == true)
$host = $_GET['host'];
else
{
echo "You didn't set the host parameter";
die();
}
if(isset($_GET['sport']) == true)
$sport = $_GET['sport'];
else
{
echo "You didn't set the sport parameter";
die();
}
if(isset($_GET['eport']) == true)
$eport = $_GET['eport'];
else
{
echo "You didn't set the eport parameter";
die();
}
if($sport > $eport)
{
$sport = $eport;
}
$scanned = 0;
$openports = 0;
$maxports = 1;
$totalports = ($eport - $sport) + 1;
$mins = floor(($totalports / 10) / 60);
$secs = ($totalports / 10) - $mins * 60;
echo "<font color=\"blue\">Scanning " . $totalports . " ports on " . $host . ", this should take around " . $mins . " minute(s) and " . $secs . " second(s), probably more depending on local website load, hardware, and other factors.<br/><br/></font>";
flush();
do
{
if($scanned >= $maxports && $maxports != 0)
{
echo "<font color=\"darkgreen\" size=\"4\">Scan limit of " . $maxports . " ports reached, scanning stopped.</font><br/><br/><font color=\"darkred\" size=\"4\">Scanner written by Samo502</font>";
flush();
die();
}
if(fsockopen($host, $sport, $errorno, $errorstr, 0.1))
{
echo "<font color=\"darkgreen\">Port " . $sport . " is open on " . $host . "</font><br/>";
$openports++;
flush();
}
else
{
echo "<font color=\"red\">Port " . $sport . " is not open on " . $host . "</font><br/>";
flush();
}
$scanned++;
$sport++;
} while($sport <= $eport);
echo "<br/><font color=\"blue\">Done, " . $openports . " out of " . $totalports . " ports are open.</font><br/><br/><br/><font color=\"darkred\" size=\"4\">Scanner written by Samo502</font>";
die();
?>
</body>
</html>
Does anyone know of a way to do this correctly ?
Thanks
**UPDATE** I've found this which seems to work a bit better, but it's still not detecting that port 21 is currently open on my network..
http://resources.infosecinstitute.com/php-build-your-own-mini-port-scanner-2/
Any help gratefully received. Thanks
