Consuming a web service secured by IP Address : IP address not recognized

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Hi,

My asp.net system has to consume a web service on my client's server to retrieve XML data. The web service is secured by IP address so that it only returns the right result only when the consumer is from a known IP Address. I'm still developing my asp.net system, and for me to test the system, my client has my public IP address (range of IP address so that other developers can test as well) to add it to their IP address list. I can access to the web service directly from my browser. However, I'm not able to access to the web service from my asp.net code. (They redirect me to their login page right now instead of sending me XML data.) My understanding of IP address of my development (local) environment is that my asp.net system uses local host but when it reaches to the web service the web service sees my request as from my public IP address. (like localhost -> private ip address -> public ip address) Is that right? In that case, is there anything I should do in my asp.net code? Or am I thinking totally wrong?

Thank you in advance.

Posted 14-Feb-13 9:06am

Meg Takahashi

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fjdiewornncalwe · Accepted Answer · 2013-02-14T09:25:00

Solution 1

If you are being redirected to a login page, that would indicate that you need authentication to access the web service.
When you connect using your browser you are allowed through because it it passing your credentials through automatically for authentication.
When you connect using your web server code, your web server will send it as an anonymous request by default. You will need to set proper credentials on the request in your code before you send it in order not to get punted to the login.

Posted 14-Feb-13 9:25am

fjdiewornncalwe

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Espen Harlinn 15-Feb-13 9:51am

5'ed!

fjdiewornncalwe 15-Feb-13 9:56am

Thanks, Espen.

Meg Takahashi 15-Feb-13 9:57am

Hi Marcus,
Thanks for your response. I did the followings and I still get the same result. Am I doing wrong?

1)
objRequest.PreAuthenticate = True
objRequest.Credentials = CredentialCache.DefaultNetworkCredentials

2)
objRequest.Credentials = New System.Net.NetworkCredential("myUserName", "myPassword", "myNetworkDomainName")

I am using GET method, but does that change anything in this situation?

fjdiewornncalwe 15-Feb-13 10:07am

If the web service requires SOAP headers, you may want to examine this: How to: Perform Custom Authentication Using SOAP Headers
I haven't done this in a while now, so I'm a little rusty on the details.(and I'm supposed to be getting some work done...) If I get a chance I'll take a peek at some of my code where I've done this and get back to you, but it may not be for a while.

Meg Takahashi 15-Feb-13 10:10am

Thank you Marcus! I'm gonna read the article to see if that is what I need. Thank you for your help!

fjdiewornncalwe 15-Feb-13 10:46am

You are very welcome.

Meg Takahashi 22-Feb-13 10:49am

Hi, the authentication was right to solve this problem, but I needed to add the info to the request header directly. This is my code which fixed the issue.

Dim strAuth As String = "Digest " + Convert.ToBase64String(System.Text.Encoding.Default.GetBytes(strUserAndDomain + ":" + strPassword))
objRequest.AuthenticationLevel = System.Net.Security.AuthenticationLevel.MutualAuthRequested
objRequest.Headers.Add("Authorization", strAuth)

Thank you everyone!