Firefox & proxies

I have been happily running Mozilla Firefox for the last few months in my desktop computer... Recently, my company's computer department have made some changes in the configuration of their servers, IPs and similar stuff, with the result that Firefox is now refusing all my attemps to reach any web site. The LAN settings for MS IExplorer are exactly the same as those for Firefox, at least in my computer configuration. But the folks from the computer department won't give any support to any web browsers other than IE, so they refuse to fix my Firefox :mad:

So here I am in the midst of my desperation and crying for help. Is there anything I could do about it? :cry:

possibly try reinstalling it it may dettect the new settings or whatnot and work :P

GO FIREFOX !!! :P

P.S. My school is aginst using firefox cuz their a bunch of uber nubs that think if its not on the computer from the start its bad rofl. and they use AVG
:(

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Originally Posted by evilklown

possibly try reinstalling it it may dettect the new settings or whatnot and work :P

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Yes I already tried reinstalling it but it failed. Btw, I have Firefox installed on another 3 computers in the department. It is not working on two of these, but oddly enough it's working on the third one, though configuration changes were made for the pc's of the entire department.

Have you tried changing the proxy settings in the options menu? It may be that you need to give the specific IP of the proxy rather that auto-detect

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Originally Posted by Valleysboy1978

Have you tried changing the proxy settings in the options menu? It may be that you need to give the specific IP of the proxy rather that auto-detect

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Oh yes, I've checked that and the settings are the same as those for IE. The error I get is something like "Error code 407. Proxy authentication required by ISA server. Access to proxy web filter denied."

I'm assuming you have the same proxy set for all protocols also. Is there any other 3rd party apps that could be interfering with Firefox?

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Originally Posted by Valleysboy1978

I'm assuming you have the same proxy set for all protocols also.

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Yes

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Originally Posted by Valleysboy1978

Is there any other 3rd party apps that could be interfering with Firefox?

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Like what? (aside from IE)

Firefox should prompt you for a password and username. What version are you using?

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Originally Posted by visualAd

Firefox should prompt you for a password and username. What version are you using?

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Well, it doesn't. I'm using 1.0.7 Spanish language version, though I assume this thing has nothing to do with the interface language.

What authentication scheme does the proxy use. I know for sure that Firefox supports NTLM, Basic and Digest.

In Internet Explorer, do you have to enter address of the proxy server? If not, then it could be that its a transparent proxy. Now, transparent proxies, should never, ask for authentication, but if it is an MS proxy then nothing would surprise me.

If this is the case then you may be able to circumnavigate the problem by entering the IP address of the default gateway as your proxy server in Firefox.

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Originally Posted by visualAd

What authentication scheme does the proxy use. I know for sure that Firefox supports NTLM, Basic and Digest..

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I haven't the slightest idea. Where could I look that up?

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Originally Posted by visualAd

In Internet Explorer, do you have to enter address of the proxy server?

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Yes.

Are you on an Ethernet? I only ask because since we switched to an Ethernet n work the proxy no longer asked for username/password. Shame your inhouse Tech dept won't help.

Could there perhaps be some redundant registry entries for Firefox?

Use that same proxy address in firefox. If it is a server name, ping it and get its IP address and enter that in the proxy field.

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Originally Posted by Valleysboy1978

Are you on an Ethernet?

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I don't even know that!

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Originally Posted by Valleysboy1978

Shame your inhouse Tech dept won't help.

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They don't like people like me who "don't accept their rules".

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Originally Posted by Valleysboy1978

Could there perhaps be some redundant registry entries for Firefox?

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Maybe, but I'm not sure what to look for. Do you think it would be sound to uninstall Firefox and remove all related entries in the registry before installing again?

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Originally Posted by mendhak

Use that same proxy address in firefox. If it is a server name, ping it and get its IP address and enter that in the proxy field.

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Well that's the first thing I tried and it wouldn't work. The funny thing is Firefox works on another computer with apparently the same settings.

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Originally Posted by krtxmrtz

I haven't the slightest idea. Where could I look that up?

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You can find out by attempting to connect to the Internet through the proxy using an HTTP request. Follow these instructions:

1. Open telnet by going to Start Menu->Run and type telnet.
2. Open an connection to the proxy server on the port Internet Explorer uses and past the following HTTP request:
   
   telnet> open address.of.proxy 8080
   
   Code:

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   GET http://www.google.com/ HTTP/1.0
Host: www.google.com

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You should recieve a response which looks something like this:

Code:

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HTTP/1.0 407 Proxy Authentication Required
Date: Thu, 20 Oct 2005 22:37:11 GMT
Content-Type: text/html
Content-Length: 1302
Expires: Thu, 20 Oct 2005 22:37:11 GMT
Proxy-Authenticate: Basic realm="Cache name"
Proxy-Connection: close

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I have highlighted the line that you interested in. It lists the authentication shcemes that the server supports.

If the server requires NTLM authntication, the PC may need to be a member of the domain and the user authenticated on that domain. This may explain why it works on some PC's and not others.

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Originally Posted by krtxmrtz

Maybe, but I'm not sure what to look for. Do you think it would be sound to uninstall Firefox and remove all related entries in the registry before installing again?

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It's probably worth a try, just make a backup first of any important docs and a backup of your registry :thumb:

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Originally Posted by visualAd

You can find out by attempting to connect to the Internet through the proxy using an HTTP request. Follow these instructions:

1. Open telnet by going to Start Menu->Run and type telnet.
2. Open an connection to the proxy server on the port Internet Explorer uses and past the following HTTP request:
   
   telnet> open address.of.proxy 8080
   
   Code:

   ---

   GET http://www.google.com/ HTTP/1.0
Host: www.google.com

   ---

You should recieve a response which looks something like this:

Code:

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HTTP/1.0 407 Proxy Authentication Required
Date: Thu, 20 Oct 2005 22:37:11 GMT
Content-Type: text/html
Content-Length: 1302
Expires: Thu, 20 Oct 2005 22:37:11 GMT
Proxy-Authenticate: Basic realm="Cache name"
Proxy-Connection: close

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I have highlighted the line that you interested in. It lists the authentication shcemes that the server supports.

If the server requires NTLM authntication, the PC may need to be a member of the domain and the user authenticated on that domain. This may explain why it works on some PC's and not others.

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I'm not sure I'm doing this correctly. I've tried the following.
1) Open a Dos terminal and type Telnet. The mouse hourglass stays on for a few seconds and then goes back to arrow and nothing happens.
2) Open a Dos terminal and type Telnet proxy_address 8080. Same as above.
3) Execute Telnet through Start/Execute. Now I click on connect/Remote system. I type the proxy address under Host name and 8080 for the port and click on connect. I don't know whether the connection has been established for there's no response. However, I type the instructions starting with GET exactly as you've written them (there's local echo) followed by CR. On the next line I type the Host... No reply.

What version of windows are you using?

Wouldn't they all be on the same version of windows? No, I suppose not but surely fx works on any of the 32-bit OS's

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Originally Posted by visualAd

What version of windows are you using?

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Ninety eight.

From what I remember, telnet is kind of strange in W98. You could give putty a go, make sure you select the protocol as real.

My guess however is that it requires NTLM 2 authentication which may not be supported in 98. I have had quick dig and found this article.

http://support.microsoft.com/default...;en-us;Q239869

What version of Fx?

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Originally Posted by krtxmrtz

Well, it doesn't. I'm using 1.0.7 Spanish language version, though I assume this thing has nothing to do with the interface language.

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;) ..

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Originally Posted by Valleysboy1978

It's probably worth a try, just make a backup first of any important docs and a backup of your registry :thumb:

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Didn't work.

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Originally Posted by visualAd

From what I remember, telnet is kind of strange in W98. You could give putty a go, make sure you select the protocol as real.

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This putty thing didn't work for me (connection refused or timed out when I tried to open...)

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Originally Posted by krtxmrtz

This putty thing didn't work for me (connection refused or timed out when I tried to open...)

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If you cannot make a connection through Putty, then you cannot make a connection through Firefox. Make sure you type the right port, select raqw and have the ccorrect hostname or IP address of the proxy server.

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Originally Posted by visualAd

If you cannot make a connection through Putty, then you cannot make a connection through Firefox. Make sure you type the right port, select raqw and have the ccorrect hostname or IP address of the proxy server.

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I assume you mean raw when you say raqw. I've typed in the proxy IP address and the port (8080) from the IE configuration.
There's simply no answer after I type the GET command you transcribed above. After a while: "Network error. Connection reset by peer".

You need to send two newlines, so if you press enter again you'll get a response. Sorryu, its hard to show newlines in text. ;)

Quote:

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Originally Posted by visualAd

You need to send two newlines, so if you press enter again you'll get a response. Sorryu, its hard to show newlines in text. ;)

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All right, finally I got the answer. There are 3 lines like the one you highlighted:

Proxy-Authenticate: Negotiate
Proxy-Authenticate: Kerberos
Proxy-Authenticate: NTLM

My pc is already a member of a specific domain. What's the difference then with IE?