Port scanner problem

Posted on 16th Feb 2014 by admin

Hai
recently i developed one app through which u can check the opened and closed ports under an ip address or domain.but there is a small error.
if no port numbers are given then it should scan from 1-100 ports.but it is scanning only first 5 ports..
can anyone help me out..
Code: <html>
<title>Check the Open ports</title>
<pre> <font size=3><b>Hai
Using this application u can check the ports that are opened in the ip address

Common Ports Used are

FTP 21
SSH 22
Telnet 23
SMTP 25
Web 80
Pop 3 110
IMAP 143
Other Applications
Remote Desktop 3389
PC Anywhere 5631</b></font>
</pre>

<body background="image01.jpg" bgproperties="fixed">
<form action="timer.php" method="POST">




<table align="center" border="1" bordercolor="black">
<tr>
<td align="left" bgcolor="transparent" valign="center">Ip address:<input type=text style="color: #FF0000;font-family: Verdana;font-weight: bold;font-size: 14px;background-color: transparent;" maxlength='30' name=address></td></tr><tr></tr>
<tr><td align="left" bgcolor="transparent" valign="center">Port Number:<input type=text style="color: #FF0000;font-family: Verdana;font-weight: bold;font-size: 14px;background-color: transparent;" maxlength='25' name=service></td></tr>
<tr><td align="center" valign="center"><input type=submit name=submit value=Submit></td>
</tr>
</table>
</form>
</body>
</html>
<?php
error_reporting(0);
$address = $_POST['address'];
$service = $_POST['service'];
if($address && $service)
{
if(fsockopen($address,$service,$errno,$errstr,10))
{
//echo "$address:$service is up!";
echo ("<table><td bgcolor=yellow width=100% align='center'><font face=Verdana, Arial, Helvetica, sans-serif size=2><b>$address:$service is up!</b></font></td></table>");

}
else
{
//echo "$address:$service is NOT up!";
echo ("<table><td bgcolor=yellow width=100% align='center'><font face=Verdana, Arial, Helvetica, sans-serif size=2><b>$address:$service is Down!</b></font></td></table>");
}
}
elseif($address)
{
for($service=10;$service<=100;$service++)
{
$sock_check=fsockopen($address,$service,$errno,$errstr,10);
if(!$sock_check)
{
echo ("<table><td bgcolor=yellow width=100% align='center'><font face=Verdana, Arial, Helvetica, sans-serif size=2><b>$address:$service is Down!</b></font></td></table>");
}
else
{
echo ("<table><td bgcolor=yellow width=100% align='center'><font face=Verdana, Arial, Helvetica, sans-serif size=2><b>$address:$service is up!</b></font></td></table>");

}
}
}
else
{

}
?>

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