Suddenly my laptop running fedora 14 stopped connecting to the Internet when I'm on my work's internal network. We go through a proxy, but it seems my browser decided to stop accessing it. I have oidentd running to identify myself to the proxy. The weird thing is, if I go to an external network connection, like our free wifi, or my wifi at home, I have no problem accessing the internet. But if I try to go through the proxy, I can't access anything outside the intranet.

Even weirder, is I can ping any address on the internet with no problem, and I can access the proxy directly in the web browser.

We've ruled out any firewall or routing rules, and the proxy is working fine for everyone else. I was changing some pam configuration files to get my gdm login working (which is working now), but other than that I didn't change anything else.

I have it working now by setting up a default route to go through the wireless interface (which can access the internet), and a route to our internal network going through the wired network.

Has anyone else heard of this?

Check your proxy settings in Firefox.

1. Edit > Preferences
2. Click on Advanced to the right of the dialog.
3. Select the Network Tab.
4. Under Connection click the Settings button.
5. Ensure that the proxy is either "Auto-detect proxy settings" or "Use system proxy settings".

Since you know the proxy information you could also set it up manually.

Thanks, but I've already tried that numerous times, that's why I'm posting here.

can you ping google?

Does it say anything?

I have auto-detect enabled.

I had the proxy working, then all of a sudden it stopped working. Didn't update or install anything. I have no problems at home (no proxy). I also can access the internet if I use the WiFi at work, which goes around the proxy. But, I can access the proxy's default web page with no problem as well.

The nuttiness of it, is if I set the proxy manually, I get no connection. But if I use auto-detect, https can get through, but not http.

Is this happening in only one browser or is it across other browsers/applications?

It affects firefox, chrome, and elinks. I can use ftp with no problems, but our firewall doesn't block ftp.

As sag47 asked, what is the output from
try
Kind regards

Sorry, that's not the issue, I'm using automatic proxy detection. I have no problem using yum through a proxy.

I've already tried every permutation of proxy addresses and configuration, nothing works.

It works fine at home, and it used to work fine at work, but it just suddenly stopped working. This has nothing to do with the proxy settings, but somehow the browser is not communicating with the proxy. I can access the internet just fine with my windows PC using the same settings.

I appreciate the offers to help, I just want you to know this is not a simple "set your proxy settings in preferences" issue, it's much more than that.

If I try to access Subversion from ie or ff on my windows xp machine, I have no problem. But if I try to access the Subversion repo from ff on Fedora 14, then I get the error

However, if I disable to proxy, I can access the repo, then if I change it back to automatic, I can still access it!

How does your network configure it? If it's using a wpad.dat file or pac file then perhaps you should download it on to your machine. Then set the configuration to your localhost wpad.dat. In case the automatic detection isn't working correctly.

It's worth a try.

It's just using the "Automatically detect proxy" setting. I tried using Wireshark to sniff the packet containing the proxy info, but I couldn't find it.

Right I understand that is your browsers' configuration settings. But it's got to "automatically" get the configuration from somewhere. That's where wpad.dat or pac files come in. I think your computer isn't correctly obtaining this file which may be why you're having trouble. If you manually download it instead of "automatically" download it you may resolve your issue.

When I enter "wpad.ourdomain.com" in my browser, I get directed to one of the three load-balancing proxies, with a message "it works!" and the name of the proxy.

If I use that proxy in my settings, I cannot access external sites through the proxy.