Obtain local IP of users machine 1

siberian · Mar 12, 2004

Is there a JS function to obtain the IP of the users local machine? The external gateway that the webserver gets is not sufficient for users that are behind NAT.

Thanks

kaht · Mar 12, 2004

This is vbscript, but it still works. Not sure how to do it in javascript.

Code:

<SCRIPT LANGUAGE=VBScript RUNAT=Server>
dim ip
dim host
Set DNS = CreateObject("TCPIP.DNS")
ip = Request.ServerVariables("REMOTE_ADDR")
HostName = DNS.GetHostByIP(ip)
</SCRIPT>

-kaht

siberian · Mar 12, 2004

Tx, this may work since our primary target is IE Windows users.

Still open to a javascript solution but I'll give this a go for now.

Thanks! Have a star

simonchristieis · Mar 12, 2004

The browser wont make a difference - this is server side code.

RUNAT=Server

siberian · Mar 12, 2004

Yes, I re-read it and see that once I woke up some more.

The problem here is not 'how do I access the environment' its 'My servers are behind load balancers and firewalls, my clients are behind firewalls'

That renders the environment useless since the server can only 'see' the IP of the external gateway of the client network. Additionally, some load balancers will rewrite the source IP to themselves in certain situations.

So, the need is for a client side java or vb script that can pull the users IP address, pop it into a form element on pageload and get me the info that way.

I'll keep poking around, thanks.

Phalanx1 · Mar 12, 2004

Did some research, and some thinkin, and here it is in JSP(JScript Server Pages) [afro]

it needs help though, i tried. [sadeyes]

<%@ Language="JScript" %>
<html>
<head>
<meta name="GENERATOR" Content="Microsoft Visual Studio .NET 7.1">
</head>
<body>
<%
function GetHostIP() {
try {
var DNS = new ActiveXObject("TCPIP.DNS");
var ip = Request.ServerVariables("REMOTE_ADDR");
var ClientIP = DNS.GetHostByIP(ip);
var strResult;
}
catch (objError) {

strResult = objError + "\n"
strResult += "returned error: " +
(objError.number & 0xFFFF).toString() + "\n\n";
strResult += objError.description;

}
Response.Write(ClientIP);

}
%>

</body>
</html>

Phalanx1 · Mar 12, 2004

another stab [tongue]

Code:

<%@ Language="JScript" %>
<html>
<head>
<meta name="GENERATOR" Content="Microsoft Visual Studio .NET 7.1">
</head>
<body>
 <%
 var IP = Request.ServerVariables("REMOTE_ADDR");
try {
var DNS = new ActiveXObject("TCPIP.DNS");
var ClientIP = DNS.GetHostByIP(IP);
 var strResult;    
}  
catch (objError) {  
    
        strResult = objError + "\n"
        strResult += "returned error: " + 
            (objError.number & 0xFFFF).toString() + "\n\n";
        strResult += objError.description;
       
    }
    Response.Write(ClientIP);
    
	%>



</body>
</html>

Phalanx1 · Mar 12, 2004

nailed it

Code:

<%@ Language="JScript" %>
<html>
<head>
<meta name="GENERATOR" Content="Microsoft Visual Studio .NET 7.1">
</head>
<body>
 <%
 var IP = Request.ServerVariables("REMOTE_ADDR");
try {
var DNS = new ActiveXObject("TCPIP.DNS");
var ClientIP = DNS.GetIPByHost(IP);
 var strResult = "";    
}  
catch (objError) {  
    
        strResult += objError + "\n"
        strResult += "returned error: " + 
            (objError.number & 0xFFFF).toString() + "\n\n";
        strResult += objError.description;
		Response.Write(strResult);
    }
    Response.Write(ClientIP);
    
	%>



</body>
</html>
[code]

Phalanx1 · Mar 12, 2004

sorry about the script onslaught, thats how i, ahh?? visualize.. yeah thats it, I didn't read the rest of what you said after Kahts post, and i gave, my best to convert it, and then i read it, so i realized you need to use

http://www.governmentsecurity.org/articles/GettingIPdatafromnumeroussources.php

this resource as a base.

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Obtain local IP of users machine 1

siberian

Programmer

kaht

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siberian

Programmer

simonchristieis

Programmer

siberian

Programmer

Phalanx1

Programmer

Phalanx1

Programmer

Phalanx1

Programmer

Phalanx1

Programmer

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