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Old 11-23-2011, 09:16 AM   #1
frank4360
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Firefox 7.0.1 (Aurora) can't find a URL; Firefox 8.0 can!


I have Firefox 7.0.1 Aurora running on PuupyLinux on an Acer Aspire One, and Firefox 8.0 running on Xubuntu 11.04 on another laptop.

On Firefox 8 I can access "statcounter.com"; with Firefox 7.0.1 I get "Firefox can't establish a connection".

All other sites I try seem to be available on both systems.

Any ideas, as this has beaten me!

Thanks in advance.
 
Old 11-23-2011, 09:28 AM   #2
gRRosminet
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Hello

Can you give a little more informations and do some checks plz :

1) Is your problem limited too statcounter ? Have you try to go to another site ?

2) Are you on the same network with your 2 PC ?

3) Have you checked your /etc/resolv.conf file ? is it the same for the 2 PC ?

4) If you try to add the following line (DNS from google) as first line of your /etc/resolv.conf, does it solve the problem ?
Quote:
nameserver 8.8.8.8
5) check your iptable rules by typing the following command as root (DNS is on port 53):
Quote:
iptables -L
 
Old 11-23-2011, 09:59 AM   #3
frank4360
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Quote:
Originally Posted by gRRosminet View Post
Hello

Can you give a little more informations and do some checks plz :

1) Is your problem limited too statcounter ? Have you try to go to another site ?

2) Are you on the same network with your 2 PC ?

3) Have you checked your /etc/resolv.conf file ? is it the same for the 2 PC ?

4) If you try to add the following line (DNS from google) as first line of your /etc/resolv.conf, does it solve the problem ?


5) check your iptable rules by typing the following command as root (DNS is on port 53):
Hello

1. So far I have only found the problem with "statcounter.com" - other sites work fine.
2. Both PC's are on the same Wireless LAN
3. The /etc/resolv.conf files have the same two lines
domain home
nameserver 192.168.1.1

The system that can connect to statcounter has a line "search home" between these two line; the other system doesn't.

4. No - adding "nameserver 8.8.8.8" makes no difference

5. The system that connects has the following output to "iptables -L"

Code:
Chain INPUT (policy ACCEPT)
target     prot opt source               destination         

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination         

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination
The system that doesn't connect has the following response to "iptables -L"

Code:
Chain INPUT (policy DROP)
target     prot opt source               destination         
ACCEPT     all  --  anywhere             anywhere            state RELATED,ESTABLISHED 
ACCEPT     all  --  anywhere             anywhere            state NEW 
TRUSTED    all  --  anywhere             anywhere            state NEW 

Chain FORWARD (policy DROP)
target     prot opt source               destination         

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination         
DROP       icmp --  anywhere             anywhere            state INVALID 

Chain TRUSTED (1 references)
target     prot opt source               destination         
ACCEPT     icmp --  anywhere             192.168.1.12        icmp echo-request 
DROP       icmp --  anywhere             anywhere            
REJECT     all  --  anywhere             anywhere            reject-with icmp-port-unreachable
 
Old 11-23-2011, 10:34 AM   #4
gRRosminet
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What is 192.168.1.12 ?

did you try with WWW.statcounter.com ? ... sometimes there are strange behaviours

Try to compare output from dig (name resolver) :
Quote:
dig statcounter.com www.statcounter.com
I think you should try to reset your iptables to confirm that it is a firewall problem, but it's realy strange that only statcounter does not work :
Quote:
iptable -P INPUT ACCEPT
iptable -P OUTPUT ACCEPT
iptable -F
iptable -X
Then if it solves your problem you'll have to redefine the firewall rules you really need
 
Old 11-23-2011, 01:30 PM   #5
John VV
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did you install no-script and / or add block plus
both could be set to block access to starcounter
 
Old 11-24-2011, 11:16 AM   #6
frank4360
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I have tried both "statcounter.com" and "www.statcounter.com" - both give the same "Failed to connect" from a PuppyLinux machine; both connect perfectly from a Xubuntu system. "dig" shows both URLs work - the "www" connection is slower to make.

Both machines are on the same wireless LAN (gRRosminet - 192.168.1.12 is the PuppyLinux system) running from an Orange Livebox (192.168.1.1).

I have disabled all Firefox add-ons, running in "safe mode" - same results.

I have disabled the firewall - deleting /etc/rc.d/rc.firewall completely.

I have tried using Seamonkey browser from the PuppyLinux system - same result, so it is not a Firefox problem.

I can connect to "gs.statcounter.com" from the PuppyLinux system, but when clicking on a link to the "statcounter.com" page, the same ""Failed to connect" message appears.

I am finding the whole thing pretty baffling!
 
Old 11-24-2011, 11:32 AM   #7
gRRosminet
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Well ... I'm running out of ideas ...

I imagine you already have checked your livebox configuration, my neighbors often have problems with it (oui, je suis "mauvaise langue" ;-) )
So the only way to find what's wrong now is WireShark from your PuppyLinux and scan what's happening on ports 53, 80 (is that all ?) when you try to connect to statcounter.com (try to do your acces with wget so that it will limit interfernces and volume of data)

Good luck ;-)
 
Old 11-28-2011, 10:26 AM   #8
frank4360
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[solved]

As always, the simple things catch you out.

PuppyLinux seems to install a /etc/hosts file as a default, and lo and behold, "statcounter" is in this file. (/etc/hosts lists URLs that cannot be accessed by the computer - it is usually used to stop advertising).

I have simply deleted the /etc/hosts file and everything is now ok.

Thanks again.
 
Old 11-28-2011, 12:29 PM   #9
gRRosminet
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You should keep some lines in your /etc/hosts :

Quote:
127.0.0.1 localhost
192.168.1.12 MyPuppyMachine
 
Old 11-28-2011, 01:08 PM   #10
frank4360
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Yes - in fact I have just deleted all "statcounter" lines.
 
  


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