Solved

Proxy Authentication (407) when launching Microsoft Virtual Labs behind transparent proxy

Posted on 2013-11-04
2
902 Views
Last Modified: 2014-02-03
---------------------------
holLaunchPad Online
---------------------------
The remote server returned an unexpected response: (407) Proxy Authentication Required ( The ISA Server requires authorization to fulfill the request. Access to the Web Proxy filter is denied.  ).

Open in new window


When I try to launch any Microsoft Virtual Lab I get the error above.

I've done some reading and believe this is a configuration error within the .Net application but is there anything I can do to workaround it from the client side? For example
http://stackoverflow.com/questions/10857684/407-proxy-authentication-required-the-isa-server-requires-authorization-to-f

Client
OS - Windows 7 SP1
Browser - IE9/Firefox 22

Proxy
Websense Appliance

Proxy Configuration
WCCPv2 transparently forwarding HTTP/HTTPS traffic to the Websense Appliance. No configuration required within IE or Firefox and it works for all other sites.
0
Comment
Question by:Recept
2 Comments
 
LVL 5

Author Comment

by:Recept
ID: 39626363
It's not pretty but I managed to workaround the application not handling proxy authentication by running the program Fiddler2 locally.

It creates a 'virtual proxy' which encapsulates the requests, with the correct authentication, and passes them onto the transparent Websense proxy.

I'd still love to know alternatives should anyone have any suggestions.
0
 
LVL 8

Accepted Solution

by:
amatson78 earned 500 total points
ID: 39809346
I  would run a pcap and find the user agent to bypass it for proxy auth.
0

Featured Post

How to run any project with ease

Manage projects of all sizes how you want. Great for personal to-do lists, project milestones, team priorities and launch plans.
- Combine task lists, docs, spreadsheets, and chat in one
- View and edit from mobile/offline
- Cut down on emails

Join & Write a Comment

Suggested Solutions

Windows Mobile Barcode Scanning These days almost every product has a barcode in some way... amongst there are 1D barcodes en 2D barcodes.. From http://www.barcodeman.com/faq/2d.php I found some handy definitions and insights. 1D barcodes …
The use of stolen credentials is a hot commodity this year allowing threat actors to move laterally within the network in order to avoid breach detection.
In this video, we discuss why the need for additional vertical screen space has become more important in recent years, namely, due to the transition in the marketplace of 4x3 computer screens to 16x9 and 16x10 screens (so-called widescreen format). …
The viewer will learn how to successfully create a multiboot device using the SARDU utility on Windows 7. Start the SARDU utility: Change the image directory to wherever you store your ISOs, this will prevent you from having 2 copies of an ISO wit…

706 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

17 Experts available now in Live!

Get 1:1 Help Now