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problem in using webservice through an ISA  proxy server

Posted on 2004-10-10
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Last Modified: 2010-04-17
Hi,

I am accessing webservice through an ISA  proxy server using basic and integrated authentication.

This is the code i am using.

Dim Result As New Validatekey.Validation
Result.Url = "http://venus/Validation.asmx"

Dim mproXy As WebProxy
mproXy = New WebProxy("http://inet:8080, True)
mproXy.Credentials = New System.Net.NetworkCredential("anish","anish","inetwork")
Result.Proxy = mproXy
dim abc=Result.keyValidate()

Result.keyValidate() is a webservice call which returns a result.

This works fine. but if i change the line below

mproXy = New WebProxy("http://inet:8080, True)
to
mproXy = New WebProxy("http://192.168.0.1:8080, True)

it gives the following error
==============================================================================
The request failed with HTTP status 407: Proxy Authentication Required (The ISA Server requires authorization to fulfill the request. Access to Web Proxy service is denied. ).
==============================================================================

Only thing i am changins is passing ip address of the proxy server instead of proxy server name.

Guys please help.
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Question by:inetworks
1 Comment
 
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Accepted Solution

by:
Julian Hansen earned 2000 total points
ID: 12274464
I am not sure but it might be because of the way your web server is setup. If you have multiple sites running on the same server then the IP address will take you to the default site whereas if you use inet IIS looks in the http request header for the domain name used and maps that to a list of web sites served on the server.

To verify this open your browser and try to browse to

http://192.168.0.1:8080

and see what happens. If you are prompted for a login to the proxy try the "anish", "anish", "inetwork" above and see if it gives you access - if it does not then you will not be able to access the webservice from your app with the above credentials.

If you do manage to authenticate - check to make sure you are going to the correct web site and that your webservice is visible / accessible on the IP address.

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