PHP Port Checker

By jonesy44 on Nov 30, 2008

This script can be added to a website to check if a port on a specified website/ip is open or not. my use for this was for checking with my uTorrent port.

In basic, if a socket is openned, it has connected. If it times out (2-3 seconds) it fails. You can edit the timeout in the fsockopen line, the last paramater is the timeout in seconds

Tested in Firefox. Report any bugs. Feel free to use wherever you need it.

[size=20]Can now scan a range of ports![/size] Warning: A wide range of ports WILL take a long time to load the page.

Screenshot Image

This script has been featured on the following websites with thanks to the wonders of google. http://pallz.net/port.php http://www.dunton-green.co.uk/kentinternet/port.php http://sgnews.totalh.com/portChecker.php http://www.kmcnally.net/stuff/port.php http://dm-gwi.co.cc/Parsers/RandomCrap.php http://x10hosting.com/forums/scripts-3rd-party-apps/100490-php-portcheck.html

<?php

/* Port Checking PHP Script
   Created by Jonesy44
   Released: 30 November, 2008  */

echo '<title>Port Availability Checker';
//Please leave the next line :)
echo ', Writen by Jonesy44';
echo '</title>';

$addr = $_SERVER["REMOTE_ADDR"];
$port = "80";
if ($_GET["addr"]) {
  $addr = $_GET["addr"];
}
if ($_GET["port"]) {
  $port = $_GET["port"];
}
if ($_GET["port2"]) {
  $port2 = $_GET["port2"];
}

echo '<form action="' .$_SERVER["PHP_SELF"]. '" method="get">
  <div style="width:300px;background:#f1f1f1;padding:10px;font-family:arial;">
    <table width="100%" border="0" cellspacing="0" cellpadding="2">
      <tr>
        <td colspan="2" style="font-size:12px;">Please enter the Address/IP and port of the website or IP address you wish to test (enter the second IP if you want so scan to that port range)</td>
      </tr>
      <tr>
        <td width="30%" style="font-size:12px;">Address/IP</td>
        <td width="80%"><input type="text" name="addr" value="' .$addr. '"></td>
      </tr>
      <tr>
        <td width="30%" style="font-size:12px;">Port</td>
        <td width="80%"><input type="text" name="port" value="' .$port. '"></td>
      </tr>
      <tr>
        <td width="30%" style="font-size:12px;">-</td>
        <td width="80%"><input type="text" name="port2" value="' .$port2. '"></td>
      </tr>
        <td width="30%">&nbsp;</td>
        <td width="80%"><input type="submit" value="Check/Scan Port(s)"></td>
      </tr>
    </table>
  </div>
</form>
';

if ($_GET["addr"]) {
  if ($_GET["port"] && !$_GET["port2"]) {
    $fp = @fsockopen($addr, $port, $errno, $errstr, 2);
    $success = "#FF0000";
    $success_msg = "is closed and cannot be used at this time";
    if ($fp) {
      $success = "#99FF66";
      $success_msg = "is open and ready to be used";
    }
    @fclose($fp);
    echo '<div style="width:300px;background:' .$success. ';padding:10px;font-family:arial;font-size:12px;">
    The address <b>"' .$addr. ':' .$port. '"</b> ' .$success_msg. '
  </div>';
  }
  else if ($_GET["port"] && $_GET["port2"]) {
    $p1 = $_GET["port"];
    $p2 = $_GET["port2"];
    if ($p1 == $p2) {
      $fp = @fsockopen($addr, $port, $errno, $errstr, 2);
      $success = "#FF0000";
      $success_msg = "is closed and cannot be used at this time";
      if ($fp) {
        $success = "#99FF66";
        $success_msg = "is open and ready to be used";
      }
      @fclose($fp);
      echo '<div style="width:300px;background:' .$success. ';padding:10px;font-family:arial;font-size:12px;">
      The address <b>"' .$addr. ':' .$port. '"</b> ' .$success_msg. '
      </div>';
    }
    else {
      if ($p1 < $p2) {
        $s = $p1;
        $st = $p1;
        $e = $p2;
      }
      else if ($p2 < $p1) {
        $s = $p2;
        $st = $p2;
        $e = $p1;
      }
      while ($s <= $e) {
        $fp = @fsockopen($addr, $s, $errno, $errstr, 1);
        if ($fp) {
          $p_open = $p_open. " " .$s;
          $p_1 = 1;
        }
        @fclose($fp);
        $s++;
      }
      if ($p_1) {
        $c = "#99FF66";
        $m = "On the address <b>" .$addr. "</b> and port range <b>" .$st. "-" .$e. "</b> the following ports were open: " .$p_open;
      }
      else {
        $c = "#FF0000";
        $m = "No ports on the address <b>" .$addr. "</b> and port range <b>" .$st. "-" .$e. "</b> were open";
      }
      echo '<div style="width:300px;background:' .$c. ';padding:10px;font-family:arial;font-size:12px;">' .$m. '</div>';
    }
  }
}
?>

Comments

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jonesy44   -  May 02, 2010
jonesy44   -  May 02, 2010
jonesy44   -  Feb 11, 2010

Night; i remember when i set up my xbox connection through my netbook it was an IPv6 address. But that was just a bridge. That's the only instance where I've come across it.

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oni-kun   -  Feb 10, 2010

@Night: "not based on NAT" I'm afraid it's going to be a long time before that happens.

"IPv6 via tunnel." http://www.google.com/intl/en/ipv6/faq.html#tunnel

Depends on if you want to run in an environment you're not comfortable with, IPv6 doesn't need to be used for a few more years atleast. Lets wait for Windows. 8?

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|Night|   -  Feb 10, 2010

just a little heads up. every user that has Widnows 7 and a network not based on NAT, has IPv6 via tunnel. (windows sets it up for you (2001:0:: address)

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oni-kun   -  Feb 10, 2010

@Night, it should not matter at all as 97% of all current accessable clients are still using the IPv4 protocol. Until upstream providers allow native IPv6 access it shouldn't really be needed, especially for a port checker. :P

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|Night|   -  Feb 10, 2010
jonesy44   -  Feb 10, 2010

As long as you enter the IP required it should be okay :) I haven't seen any websites using IPv6 Yet though.

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oni-kun   -  Feb 10, 2010

Dunno who the owner of that site is @Jonsey44, WHOIS doesn't return anything special.

So you know, IPv4 (What we, and you use currently) can only allocate 2^32, including reserved addresses that we can't use. That is roughly 4 billion, obviously not enough for the growing world. It is possible by 2013 it will be exhausted.

IPv6, which is partially in support (Google, and some sites /torrents and most Linux distributions) but there is yet still a huge leap to take to fulfill this jump.

IPv6 = 2¹²⁸ = A lot.

@Night. No, there will be enough addresses maybe to allow every partical in this universe internet allocations, but.. pointless to go there. :)

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|Night|   -  Dec 12, 2009

its HEX so a-f and 0-9 8 sets off 4s

so 0000:0000:0000:0000:0000:0000:0000:0000 - ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff

it can also be shorten down. like 0000 is written like this ::

so 0000:0000:0000:0000:0000:0000:0000:0000 is realy :: in short format

to put that in on a real ip context 2001:470:dc100::100 is short for 2001:0470:dc100:0000:0000:0000:0000:0100

so a zero at a start can be removed withouut adding a : a full sets off 0 in a line 00000 is :: :: can only be used onces so ::: is invalid

if you want to test ipv6 you can get a free tunnel from http://tunnelbroker.net/

(IPv6 in hex gives enough ips to every corn off sand ine the world, had it been a-z it would be every atom in the universe)

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jonesy44   -  Dec 11, 2009

Being able to scan other IPs is infact a function which i wanted included on there. The auto print of the IP is because the majority of people who visit those types of websites are checking their own network. If you only want to be able to check your own, you could change into plain text removing the ability to edit entirely.

I've never come accross ipv6 before i'm sorry. what is the range per section? a-z0-9?

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|Night|   -  Dec 11, 2009

a few litte things that would be good.

Dont print ip in url so that i can mod it to only scan port like

http://domain/p.php?=9928

then it checks the remote_addr and prints out.

now it gives ip which gives the end user ability to scan others, which is a unwatned effect.

2nd

for ipv6 have it check the inputet add is ipv6 if so add []

bez to define a port in ipv6 it has to be in []

like 2001:470:dc100::100 is a valid ipv6 to define a port in there has to be like this [2001:470:dc46::2]:port

now when enter a straigt v6 it just adds the : at the end which is not a port but rather a new address lengt.

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jonesy44   -  Dec 09, 2009

Great stuff! Sorry i hadn't checked the PHP version i was using before i posted it.

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|Night|   -  Dec 08, 2009

good code but missing one thing IPv6 support. when i try to scan i ipv6 domain lik ipv6.google.com it says closed even if i know its open

Worked when i updated php to 5.3.1

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jonesy44   -  May 31, 2009
jonesy44   -  Feb 06, 2009

And zmodem too i guess :D

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jonesy44   -  Feb 06, 2009

Thanks A^1^T^E^A^M, and ProIcons for the +Likes :)

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Joshuaxiong1   -  Dec 28, 2008

cool this script really work lolololol!!!!!!!!!!!!!!!!!!!!!!!!!!

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jonesy44   -  Dec 06, 2008

Sorry, misread youor question, $port is set at the top of the script.

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jonesy44   -  Dec 06, 2008

$_GET["port"] is set when you hit submit on the form, along with port2. it's a good idea, i'll checkit out furbs :P

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F*U*R*B*Y*   -  Dec 05, 2008
  else if ($_GET["port"] && $_GET["port2"]) {
    $p1 = $_GET["port"];
    $p2 = $_GET["port2"];
    if ($p1 == $p2) {
      $fp = @fsockopen($addr, $port, $errno, $errstr, 2);

sorry, but where is $port set? should check to see if $_GET['port'] and $_GET['port2'] is numeric

if (is_numeric($_GET['port']) && is_numeric($_GET['port2'])) {

besides that, not bad....

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jonesy44   -  Dec 05, 2008

[size=20]Can now scan a range of ports![/size] Warning: A wide range of ports WILL take a long time to load the page.

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jonesy44   -  Dec 04, 2008

of course, jus put "

" tags around it ;)

I'm working on a port range scanner next. i'll keep yah updated :]

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Xpl0reR   -  Dec 03, 2008

/me rates 10 / 10 and +likes :)

can you make it to be centered in the web page ? that would be really neat.

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jonesy44   -  Dec 03, 2008

:-(

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F*U*R*B*Y*   -  Dec 02, 2008

It already had a rating of 5 when i rated it a 7, so no one ;)

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jonesy44   -  Dec 02, 2008

Who rated this down :-[

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jonesy44   -  Dec 01, 2008

Thanks for the replies, i try and keep a clean interface, Hawkee. and yes, possibly a bad habit of integrating HTML with PHP, but i find it sometimes easier to maintain rather than using the two seperately.

I will see what i can do FURBY, might take a while to scan the ports, so perhaps some nice JS & Ajax will come in handy to make a nicer interface.

Thanks for the ratings & +Likes :]

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F*U*R*B*Y*   -  Nov 30, 2008

What i would add next, is a feature to scan a range of ports, or persific ports... i.e. scan ports inbetween, and including port 80-100 or just scanning port 80 and 100..... the limitations are to what you see fit, but its what others may find handy...

Rating: 7/10 Like: +Like

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