Can't load web pages with FF

tebucky · 01-07-2010, 07:53 AM

All,

For some reason I can't load any webpages with FF. I get this error:

Firefox can't establish a connection to the server at en-us.www.mozilla.com.

I can ping everything and ssh and other protocols work just fine. Here is the output of my /etc/resolv.conf file (Comcast)

# Generated by NetworkManager
nameserver 68.87.71.230
nameserver 68.87.73.246

Any thoughts as to what's going on?

onebuck · 01-07-2010, 08:15 AM

Hi,

You say that you can ping everything. How? Via IP or name resolution. Try placing another nameserver into the '/etc/resolv.conf' file. You could add;

Code:

nameserver 4.2.2.1
nameserver 4.2.2.2
nameserver 4.2.2.3
nameserver 4.2.2.4

Any of the four Verizon third level DNS to see if it could be a DNS problem.

Code:

# whois 68.87.71.230
Comcast Cable Communications, Inc. JUMPSTART-2 (NET-68-80-0-0-1)
                                  68.80.0.0 - 68.87.255.255
Comcast Cable Communications, Inc. COMCAST-18 (NET-68-87-64-0-1)
                                  68.87.64.0 - 68.87.127.255

You are using Comcast DNS and they are notorious for problems.

Look at using OpenDNS as another reliable server;

Code:

nameserver 208.67.222.222
nameserver 208.67.220.220

ArchLinux_OpenDNS_Wiki has additional information.

The above link and others can be found at 'Slackware-Links'. More than just Slackware® links!

tebucky · 01-07-2010, 09:35 AM

I can ping by both domain name and IP

I'm behind a LAN sharing the same DNS configuration and I have no issues with my XP box or my mac, just the ubuntu station.

Is this helpful? Here is my new resolv.conf file and I still can access web pages via FF;

# Generated by NetworkManager
nameserver 68.87.71.230
nameserver 68.87.73.246
nameserver 208.67.222.222
nameserver 208.67.220.220

damgar · 01-07-2010, 09:57 AM

Quote:

file and I still can access web pages via FF;

Can or can't?
Try 2 things:

1. If you have another browser like konqueror installed try that, this will tell you it's specific to firefox.

2. Try changing the homepage of FF to something like www.google.com as it's possible you are just having problems connecting to the site mentioned in the error.

tebucky · 01-07-2010, 10:14 AM

Sorry, I CAN"T access sites via FF. Thanks for pointing that out.

I don't have another browser installed (nor can I get to one to download ;-) and I've tried reaching multiple sites (google, yahoo) and none of them load.

damgar · 01-07-2010, 10:19 AM

What distribution are you using?

tebucky · 01-07-2010, 10:20 AM

So I take some info back... some sites I CAN ping and some I CANNOT. Here is an example:

root@chach:/etc# ping google.com
PING google.com (64.233.169.106) 56(84) bytes of data.
64 bytes from yo-in-f106.1e100.net (64.233.169.106): icmp_seq=1 ttl=243 time=25.1 ms
64 bytes from yo-in-f106.1e100.net (64.233.169.106): icmp_seq=2 ttl=243 time=22.7 ms
64 bytes from yo-in-f106.1e100.net (64.233.169.106): icmp_seq=3 ttl=243 time=23.7 ms
^C
--- google.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2002ms
rtt min/avg/max/mdev = 22.718/23.859/25.148/1.005 ms

root@chach:/etc# ping boston.com
PING boston.com (66.151.183.41) 56(84) bytes of data.
^C
--- boston.com ping statistics ---
5 packets transmitted, 0 received, 100% packet loss, time 4032ms

damgar · 01-07-2010, 10:25 AM

boston.com isn't pingable right now, whatever it is. I can't ping it either.

What distro?

tebucky · 01-07-2010, 10:43 AM

Ubuntu 9.04

damgar · 01-07-2010, 10:53 AM

Have you checked the connection settings in firefox?

PHP Code:



edit-> preferences-> advanced-> connection settings

For most people at home "no proxy" is the best option.
Was FF working previously or was this a new install? If it was working previously have you updated recently? With Ubuntu re-installing FF is easy enough with synaptic which also goes for isntalling another browser.

DrLove73 · 01-07-2010, 11:31 AM

When you ping sites. avoid pinging domain names without subdomen. Best is to try pinging www.domain-name (like www.boston.com).

tebucky · 01-07-2010, 12:36 PM

It appears that it was some issue with my firewall (firestarter). I stopped that service and web pages were accessible. So sorry to take up your time and thank you for your help.

onebuck · 01-07-2010, 03:33 PM

Hi,

Glad to hear you got things going. As the 'OP' you can mark the thread as [Solved] via the thread tools.