Knowledgebase
2X Client Cannot Connect Through MS ISA
Posted by David Saliba on 02 February 2010 03:49 PM

Error: 2X Client cannot connect using Microsoft ISA as a proxy.

Solution:

The ISA is essentially an application layer firewall, with HTTP protocol filtering.
For the 2X Client, or other clients, to be able to access the server using the Regular Gateway and SSL
modes, HTTP filtering must be completely disabled.
 

From:
http://technet.microsoft.com/en-us/library/cc302627.aspx


Appendix A: Disable the Web Proxy Filter

To disable the Web Proxy filter for HTTP, do the following:

   1. In ISA Server Management, click the Firewall Policy node.
   2. Using the Toolbox tab, click Protocols.
   3. Expand All Protocols, right-click HTTP, and then click Properties.
   4. Click the Parameters tab, and in Application Filters, clear Web Proxy Filter. Then click OK.
   5. Click Apply to update the firewall policy.

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