You need to be more explicit about the error you are getting... but in the cases that you have recommended....

The most likely scenarios are
1. The proxy server is doing a IP (or MAC) based authentication. But then you should be getting an ACCESS DENIED PAGE.
2. The proxy could be using transparent caching.. but based on IP Access.
3. Check by telnetting into the proxy server port 3128 and type
get www.google.com http/1.1


if you get no output, you will know you are not reaching proxy, else you should get some response from the proxy... which would tell you what is not correct.

regards,
alok sinha
Sandip Bhattacharya wrote:

Bhaskar Dutta wrote:

I checked all the settings of internet explorer which work properly. Tried all those settings in netscape and konqueror. Still cant access the name servers. I dont know what login procedure the proxy uses but I was reported that the systems dont need to authenticate. How's that possible? Maybe the administrators saved authentication information in windows and my prof doesn't know about it. How can I figure that out ?

Just firing up windoz get the systems online. I tried to intall mozilla browser for windows and it also works with the proxy settings. Read somewhere on the net that some microsoft proxy servers use propreitory protocols. Anyone has any ideas what this is?

I exported http_proxy=http://xxx.xxx.xxx.xxx:3128/ and other vars but I guess the system is not being able to authenticate at all. I can only ping the gateway. Also set the local network access to work without proxy as set in IE browser. Still no use.

Maybe the browsers use NTLM authentication(http://davenport.sourceforge.net/ntlm.html) also called "password-less" auth by some. Last I heard, Firebird supports NTLM.

- Sandip



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