I can't access some websites

[younness]

Hello guys,

I am a new to linux world and I want to ask you a question about openSUSE 10.3, I have installed it and connected to the internet, the only website working good is en.opensuse.org, however, I can't get access to some website i.e., google, yahoo, gnu.org nothing. I have disable the firewall and it still the same.

The question is how can I fix this problem.
Thank you

[Lazydog]

I would question if you are even on the network.
I think the page you are getting is coming from the hard drive and not the internet.
What does ifconfig show you?

[fingal]

Hi - Are you using Firefox? If so, try using another browser (just for the time being). I suggest trying Konqueror.

I have a reason for suggesting this as sometimes settings in Firefox need changing before you can get full access to all sites.

In Firefox you might try typing this in the address bar (where the address for a website would go):

about:config

Now scroll down and look for where it says network.dns.disable.IPv6 . This might be set to 'false'. If so, click on it to highlight that setting and press Enter. It should change to True. Now close that window. In fact, it might be worth shutting down Firefox all together and starting it up again.

That sometimes works. If not, then you have other issues.

[younness]

Sorry if I said the only website was working good is opensuse.org but there are some other websites work, but not really good. i.e., I can access this website (linuxforums.org) but I can't access the fourms ( I can connect to linuxforums.org, but when I click forums it doesn't work.)
That dose not make sense.

Can you please just do a favorite for me, just open your terminal and type the following commands and copy it and email it to me:

su
gedit /etc/sysconfig/sysctl

[younness]

Hi - Are you using Firefox? If so, try using another browser (just for the time being). I suggest trying Konqueror.

I have a reason for suggesting this as sometimes settings in Firefox need changing before you can get full access to all sites.

In Firefox you might try typing this in the address bar (where the address for a website would go):

about:config

Now scroll down and look for where it says network.dns.disable.IPv6 . This might be set to 'false'. If so, click on it to highlight that setting and press Enter. It should change to True. Now close that window. In fact, it might be worth shutting down Firefox all together and starting it up again.

That sometimes works. If not, then you have other issues.

Bingo, you are right, thank you all for your help.

[Lazydog]

In Firefox you might try typing this in the address bar (where the address for a website would go):

about:config

Now scroll down and look for where it says network.dns.disable.IPv6 . This might be set to 'false'. If so, click on it to highlight that setting and press Enter. It should change to True. Now close that window. In fact, it might be worth shutting down Firefox all together and starting it up again.

That sometimes works. If not, then you have other issues.

This one is new to me.
Never had this problem.
Thnx for pointing this out.

[younness]

I have another question for you Engineer Fingal before I ask this question I want to let you know that I had solved that problem myself, nobody helped me, all I did is I modified some files, one at this folder /etc/sysconfig/ a file called "sysctl" I opened it with gedit command. and the problem I did not remember what file I modified at /etc/sysconfig/network, so there is a anther way to solve that problem, however the best way is the one that you mentioned "about:config" . can you please tell me what I did exactly.

[fingal]

...can you please tell me what I did exactly.

Hello - what you just did was to disable a feature designed to handle Internet Protocols (IPs). In this case it's called IPv6, and it is supposed to replace IPv4. For some reason (which I don't understand) some websites can't handle IPv6; however Firefox is configured to use it by default.

I was able to help you because when I started using Firefox I had huge issues with this which took me a long time to fix. If anyone is able to explain why IPv6 can cause so many problems, I would be grateful!

I use Mandriva, and I have a file in /etc called modprobe.conf . I make sure when I install from scratch that I add the following lines to this file:

alias net-pf-10 off
alias ipv6 off

to further disable IPv6. If I don't, Mandriva loses its ability to install anything over the Net! I suppose a lot of IP providers are still using the old protocol... All I know is, I have to switch it off. Pleased that helped!

[younness]

some websites can't handle IPv6; however Firefox is configured to use it by default.

Yes that's true. That what I found:

## Type:	yesno
## Default:	no
#
# Runtime-configurable parameter: forward IP packets.
# Is this host a router? (yes/no)
#
IP_FORWARD="no"

## Type:	yesno
## Default:	no
#
# Runtime-configurable parameter: forward IPv6 packets.
# 
IPV6_FORWARD="no"

## Type:        yesno
## Default:     no
#
# Runtime-configurable parameter: use temporary IPv6 addresses
# instead of using the EUI-64 interface identifer
# 
IPV6_PRIVACY="no"

#
# Runtime-configurable parameter: send MLD announcements of this
# version.
#
IPV6_MLD_VERSION="yes"

I made some change here, that code can be found at a file called "sysctl" in '/etc/sysconfig/' folder,

by the why, I had the same problem when I installed debian, the only website was working good is debian.org. but I have some live linux CDs like Knoppix, Ubuntu, and Kubuntu. the first one ( Knoppix ) almost all file works just fine with it.
That was a big trouble to me using linux, and I want to thank you so much about your help man, and I have no doubt that so many people like me have the same problem.

[crazy rallan]

If this happens and you still want ipv6 functionality swap to Opendns.(opendns.com)