Reaver,
Акела, да, действительно, не про интранет речь...
вот че я накопал:
Authentication method not supported message (MS Proxy Server, IIS, and others)
Platform: All platforms
This error message will appear when you try to visit a server which uses NTLM (NT Lan Manager) authentication, which Opera does not support:
"The server requested a login authentication method that is not supported."
This error can apply to the Microsoft Internet Security and Acceleration Server (ISA), which has encrypted authentication enabled by default. This can be changed in the server properties: "Edit Identification" - enable "Basic with this domain".
A possible solution to the problem if basic authentication cannot be used is to use the NTLM Authorization Proxy Server, which allows you to authenticate using Microsoft's proprietary NTLM protocol.
You may also see the error on similarly configured Microsoft IIS (Internet Information System) servers.
If this error message appears when you try to connect to your proxy server with Opera, it is probably because it is running MS Proxy Server 2.0 with encrypted authentication:
"The proxy server requested a login authentication method that is not supported."
This proxy server will not work with Opera unless you download and install the MS Proxy Client (mspclnt). Ask your network administrator to configure the server in such a way that it gives you access to the Internet through use of the mspclnt. Then configure Opera as if you were connected to the Internet without using a proxy server. This involves removing all proxy information from your proxy settings. (Go to File > Preferences > Network > Proxy servers... and disable proxy for all protocols.)
Another possibility for the network administrator is to disable encrypted authentication and use basic authentication instead.
вообсчим гиморно все это... посему Maxthon форева !