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Recently, I tried to access the internet using Firefox. I have a good wifi signal according to the toolbar at the top, but Firefox says "Firefox can't find the server atwww.example.com." I tried disabling UFW, but that did nothing. What exactly is happening that is preventing Firefox from accessing the internet, and how can I fix this issue?

I'm using Ubuntu 12.10, and the machine is a Compaq Presario CQ62.

NOTE: Just before the issue, Firefox installed an update. Also, I did not use the computer for a month or so before this issue, and the last time I used it there was no such issue.

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2 Answers

up vote 0 down vote accepted

Your question is quite generic, so here are some tips:

  • Have you checked your Firefox's network settings?
    • What about proxy settings?
    • Do you use something like Foxyproxy?
  • You may try accessing the web from different tool/browser (Chrome, wget). Is it working?
    • If no, it problem in your network connection and not firefox itself.
  • Execute following command to check the DNS lookup: "nslookup www.example.com"

It would be nice having more information. So I just hope that this will help a little...

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you might also use the following command to ascertain 100% internet connectivity. type in a terminal window text between, but not including the quotes "ping google.com" results similar to text in braces are good result {PING google.com (74.125.228.0) 56(84) bytes of data. 64 bytes from iad23s05-in-f0.1e100.net (74.125.228.0): icmp_req=1 ttl=252 time=16.0 ms} –  pfeiffep Mar 16 '13 at 21:14
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I had same sort of problems with all the browsers. I resolved it with this. After running this once in terminal, It could access normally through the browser.

Try this in Terminal :

firefox http://www.example.com
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