Cannot open all websites.

[Guest]

Hi,
I am using a Bluetooth dongle in my Laptop to access internet by connecting
to my Desktop which in turn is connected to the internet through a ADSL
modem.
However, I am facing a strange problem after getting connected to the
internet, which is that I am able to open only few sites in my browser, in
fact I can only open google sites such as : gmail ,google, gtalk etc. Trying
to open any other site results in no action. The browser keeps sending
packets but their is no reply. As such the page is blank with no visible
page and ultimately the page times out.

Although I am able to use TCP/IP applications but the problem is with web
pages. I have tried using all sorts of browsers but of no use. The problem
persists in all of them.

I somehow found on the net that it could be the problem of MTU size set in
the registry. Therefore I tried to lower down my MTU size to 1452, and tested
that it is the maximum packet size I can afford on the bluetooth adapter.
However, still after changing the MTU size in the registry I am unable to
open all the other websites.
Only google.com, and its related links are opening. There is no security
level problem or moderation or firewall of any kind which is hindering the
sites, because when I directly connect to the internet using ethernet adapter
I can straightaway open the sites.

Can someone help me on this.

TIA
Shishir

 

[Chuck]

Hi,
I am using a Bluetooth dongle in my Laptop to access internet by connecting
to my Desktop which in turn is connected to the internet through a ADSL
modem.
However, I am facing a strange problem after getting connected to the
internet, which is that I am able to open only few sites in my browser, in
fact I can only open google sites such as : gmail ,google, gtalk etc. Trying
to open any other site results in no action. The browser keeps sending
packets but their is no reply. As such the page is blank with no visible
page and ultimately the page times out.

Although I am able to use TCP/IP applications but the problem is with web
pages. I have tried using all sorts of browsers but of no use. The problem
persists in all of them.

I somehow found on the net that it could be the problem of MTU size set in
the registry. Therefore I tried to lower down my MTU size to 1452, and tested
that it is the maximum packet size I can afford on the bluetooth adapter.
However, still after changing the MTU size in the registry I am unable to
open all the other websites.
Only google.com, and its related links are opening. There is no security
level problem or moderation or firewall of any kind which is hindering the
sites, because when I directly connect to the internet using ethernet adapter
I can straightaway open the sites.

Shishir,

So when you lowered MTU to 1452, what test results convinced you to stop there?
There's nothing magical about MTU that says "stop there", as minimum value in
all problem cases.

What MTU references have you read, anyway?
<http://nitecruzr.blogspot.com/2005/06/internet-connectivity-problems-caused.html>
http://nitecruzr.blogspot.com/2005/06/internet-connectivity-problems-caused.html

And have you tried opening any websites by IP address?
<http://nitecruzr.blogspot.com/2006/05/identifying-dns-problem-in-your.html>
http://nitecruzr.blogspot.com/2006/05/identifying-dns-problem-in-your.html

 

[Guest]

So when you lowered MTU to 1452, what test results convinced you to stop
there?

I pinged my defaullt gateway with this
ping -l -f 1452 192.168.x.x
which resulted in a reply from the other end as against the earlier replies
which said packet size too large.
This convinced me to stop there.

There's nothing magical about MTU that says "stop there", as minimum value in
all problem cases.

What MTU references have you read, anyway?

I have read general stuff on the net including those available on the
microsoft website regarding the ways to change the MTU size in the registry.

http://nitecruzr.blogspot.com/2005/06/internet-connectivity-problems-caused.html

And have you tried opening any websites by IP address?

Nopes, I have not tried openeinig any website with the IP addreess. Will
that make any difference. If yes how ? Can you explain me the difference
between these two cases.

 

[Chuck]

there?

I pinged my defaullt gateway with this
ping -l -f 1452 192.168.x.x
which resulted in a reply from the other end as against the earlier replies
which said packet size too large.
This convinced me to stop there.



I have read general stuff on the net including those available on the
microsoft website regarding the ways to change the MTU size in the registry.





Nopes, I have not tried openeinig any website with the IP addreess. Will
that make any difference. If yes how ? Can you explain me the difference
between these two cases.

Well, if your MTU is correct, then DNS is the next good possibility for your
symptoms. Read the immediately above link.

Keeping an open mind, though, you might want to read the first link, and some of
the linked articles. Maybe another article will give you more perspective on
the MTU issue.

 

[Guest]

Well, unfortunately the problem is not related to DNS, since there is no such
error as 'Can't find the server', but rather that of page getting timed out.

Also , I have checked that I can ping the websites through the command
prompt. So the DNS servers are running fine. In fact I tried to view the
source of the pages while my browser kept trying to load the page, and found
that I get some part of the HTML code for the requested page , but that code
is incomplete resulting in this issue.
(
Any other lines of thinking !!

Regards,
Shishir

 

[Chuck]

Well, unfortunately the problem is not related to DNS, since there is no such
error as 'Can't find the server', but rather that of page getting timed out.

Also , I have checked that I can ping the websites through the command
prompt. So the DNS servers are running fine. In fact I tried to view the
source of the pages while my browser kept trying to load the page, and found
that I get some part of the HTML code for the requested page , but that code
is incomplete resulting in this issue.
(
Any other lines of thinking !!

Regards,
Shishir

Your main diagnosis is "the page is blank with no visible page and ultimately
the page times out". Not a lot of detail there. Remember that I'm not there
with you, all I can do is offer diagnostic possibilities.
<http://nitecruzr.blogspot.com/2005/06/background-information-useful-in.html>
http://nitecruzr.blogspot.com/2005/06/background-information-useful-in.html

But, if you're absolutely certain that DNS and MTU are not causing any problems,
look at LSP / Winsock corruption.
<http://nitecruzr.blogspot.com/2005/05/problems-with-lsp-winsock-layer-in.html>
http://nitecruzr.blogspot.com/2005/05/problems-with-lsp-winsock-layer-in.html

And rethink how you are diagnosing the problem.
<http://nitecruzr.blogspot.com/2005/08/solving-network-problems-tutorial.html>
http://nitecruzr.blogspot.com/2005/08/solving-network-problems-tutorial.html

 

[Guest]

Hi Chuck,
I know this can be very frustating for someone like you who really wants to
help. But the point is that in most of the cases people are not very
comfortable with the networking jargon and moreso with the problem itself
which they are facing.

But I am pretty much sure that windows has tons of its own mysterious flaws
no one can understand. And to just give you a glimpse of what's happening in
my case is that even though my laptop and desktop are on different subnets, I
am able to connect access my Desktop's LAN and subsequently the internet,
only that the internet access is restriced to the google's sites [].

Also , something strange which I found out on doing ipconfig /all ,was that
my default gateway was set same as my IP address. I dont't know even then how
I was able to access the internet.

Coming to what you asked to look at LSP / Winsock corruption. I again think
if there would have been any problem concerning LSP/ Winsock corruption then,
I should not have been able to access all the other websites when I am
directly connected to the internet. It's only when I connect through the
bluetooth that the problem is arising.

Any clue as to find out the difference between other sites and google.com
sites , which can be helpful in tracing the bug.

Many Thanks,
Shishir

 

[Chuck]

Hi Chuck,
I know this can be very frustating for someone like you who really wants to
help. But the point is that in most of the cases people are not very
comfortable with the networking jargon and moreso with the problem itself
which they are facing.

But I am pretty much sure that windows has tons of its own mysterious flaws
no one can understand. And to just give you a glimpse of what's happening in
my case is that even though my laptop and desktop are on different subnets, I
am able to connect access my Desktop's LAN and subsequently the internet,
only that the internet access is restriced to the google's sites [].

Also , something strange which I found out on doing ipconfig /all ,was that
my default gateway was set same as my IP address. I dont't know even then how
I was able to access the internet.

Coming to what you asked to look at LSP / Winsock corruption. I again think
if there would have been any problem concerning LSP/ Winsock corruption then,
I should not have been able to access all the other websites when I am
directly connected to the internet. It's only when I connect through the
bluetooth that the problem is arising.

Any clue as to find out the difference between other sites and google.com
sites , which can be helpful in tracing the bug.

Many Thanks,
Shishir

Shishir,

I haven't seen your "ipconfig /all" yet, so I don't know for sure what the
problem is. But if you can run it, then you have to be able to post it. I'm
terrible at mind reading.

If you'll read my article on LSP / Winsock corruption, you'll note how many
different symptoms that problem can provide. Yours are not unusual.

Did you try accessing other websites by IP address? Did you try any of the
diagnostic procedures outlined in DNS problem diagnosis?
<http://nitecruzr.blogspot.com/2006/05/identifying-dns-problem-in-your.html>
http://nitecruzr.blogspot.com/2006/05/identifying-dns-problem-in-your.html

Now if you know what the problem is, fine. I'll help you fix the problem, if
you tell me what it is. But if you only know the symptoms ("I can only access
Google when I'm connected by Bluetooth", right?), then connect thru Bluetooth,
and do some diagnostics.

And provide us the requested diagnostics for examination, so we can help. Don't
just tell us what you think that you see, and why our suggestions don't make any
sense. Start by identifying the problem, in detail.
<http://nitecruzr.blogspot.com/2005/06/background-information-useful-in.html>
http://nitecruzr.blogspot.com/2005/06/background-information-useful-in.html

Read the articles, and ask questions about specifically what you don't
understand. Don't just say that you "are not very comfortable with the
networking jargon and moreso with the problem itself". That doesn't get us
anywhere.
<http://nitecruzr.blogspot.com/2005/05/how-to-post-on-usenet-and-encourage.html#Waiting>
http://nitecruzr.blogspot.com/2005/05/how-to-post-on-usenet-and-encourage.html#Waiting