Re: Only some websites will open - Ubuntu

On May 30, 12:18 pm, The Natural Philosopher <a...@xxx> wrote:
Big Dave Smith wrote:
On May 30, 10:26 am, The Natural Philosopher <a...@xxx> wrote:
Big Dave Smith wrote:
On May 30, 3:59 am, The Natural Philosopher <a...@xxx> wrote:
Big Dave Smith wrote:
On May 29, 10:52 pm, johnny bobby bee <useraddshine...@xxxxxxxx>
wrote:
Big Dave Smith wrote:
I have installed vmware-server and am running WindowsXP inside of it,
which does not exhibit the same problem.
are you running firefox on windows, or IE?
I know of several sites that (on my Windoze 98 setup) do the same ..in
Firefox.
Their HTML and javascript causes massive indigestion in Firefox.
Most sites that are written by non techie types are designed to work
with IE only - they never validate with Firefox/opera etc etc.
I suggest upgrading at least to the latest latest Firefox you can find,
and checking that out before hacking into your networking layers.
Philosopher, Thanks for the reply.
I don't think this is the issue. I do a bit of web-design myself, and
some of the sites which I'm unable to open are dead-simple.
toothpastefordinner.com, for example. Also, like I said, if I keep
hitting refresh, the page DOES actually load a tiny bit at a time,
which I find bizarre. Almost like after it gets the header and
whatever extra bits are stuck to it, it shuts down.
Then that does sound like lots ACKS or somesuch in the networking layers
somewhere.

To answer you, I am using FireFox 2 on everything (Kubuntu, other
computers on the same network, and WindowsXP running in vmware), but
have tried other browsers to make sure it's not firefox being odd.
Slowly narrowing it down!
I have sen behaviour of this sort in the bad old days with pretty dire
network cards and drivers. Or severe packet loss.

Try pings to the targets with varying length packets: If they all by and
large succeed you at least know that the most basic IP layers are not
the problem.

Philosopher, Thanks again for your help. I think you may have found
something to at least give us more of an idea what is going on.

Pings to google.com work, with size ranging from 56 to 1000 bytes, no
problems.
Pings to slashdot.org fail, no matter what size, 100% packet loss.
Slashdot is a site I can't open on that computer.
Pings to ibm.com fail, no matter what size, 100% packet loss. ibm.com
IS a site I can get to, however. Maybe they're just blocking pings?

It is pretty common these days to block pings..since its a great way to
mount a denial of service attack.

100% loss means its blocked, not flakey.





IIRC some part of netstat will also dump any bad packets or error
packets - those are worth looking for.

here you go

tempest:~# netstat -i
Kernel Interface table
Iface MTU Met RX-OK RX-ERR RX-DRP RX-OVR TX-OK TX-ERR TX-DRP
TX-OVR Flg
eth0 1500 0 8722483 0 0 0 9726410 0 0
0 BMRU
lo 16436 0 79130 0 0 0 79130 0 0
0 LRU
tempest:~#

MTU at 1500 on my box, and zero interface errors at all.

david@server:~$ netstat -i
Kernel Interface table
Iface MTU Met RX-OK RX-ERR RX-DRP RX-OVR TX-OK TX-ERR TX-DRP TX-
OVR Flg
eth0 1500 0 53805 0 0 0 249200 0 0 0 BMRU
lo 16436 0 0 0 0 0 0 0 0 0 LRU

Looks...fairly similar? I'm not sure if that reveals anything, other
than that my MTU is 1500 on the computer. Should I have my router's
MTU set to match?

Looks like no local errors at the least.

Curiouser and curiouser.

Did you say that a winXp machine on te same IP adress worked?


Yes. This computer was (96 hours ago) a Windows XP computer, which
worked fine for me for about 3 years. Also, the copy of WindowsXP I
am running from within vmware on the Kubuntu setup has no problems.

Actually, thinking back, maybe a year ago I threw a hard drive into
this computer to run SuSE off of. I believe I had networking problems
with that installation as well.

The setup is a Tyan Tiger i7505 motherboard with dual Intel 2.4GHz
Intel Xeon processors with a 533MHz FSB and hyperthreading enabled.
For my internet connection I am using the onboard ethernet, which is
only 10/100, I believe, although the specs I'm finding on the 7505
look like they have a gigabit ethernet option as well. 2GB of RAM.

The cable from the computer to the router (Linksys RV082) is shielded
Cat. 5e all the way, and I consider the router to be reliable,
particularly since if I flip over to XP, everything works fine.

Someone suggested checking the hosts file. I don't even know what
that means, but if there is something I should do or look for, please
let me know with a little more detail. I'm more of a web developer
than a linux guru.

Thanks again!
-Dave

.

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