Tesco

Further to the other poster, I too have had a problem with Tescco. I cannot upload any files, they time out. I am trying to upload to Flickr and Dropbox. The problem has started in the past month, ever since Tesco swapped their services over. They are now telling me that it is my problem - Port 80 is blocked on my PC but they cannot help to resolve this. I am running Windows 7, with Windows Firewall and AVG anti-virus.
I am not sure how to deal with this. Is there a way of telling which ports are used and/or blocked and is it on my router or PC?

This problem is affecting lots of customers (according to Tesco).

Edited by deleted (Mon 25-Jun-12 11:53:50)

Which model router?

In reply to a post by bramblejam:

Port 80 is blocked on my PC

Well it would be! You are not running a web server on your PC.

In reply to a post by bramblejam:

Is there a way of telling which ports are used and/or blocked

Yes: https://grc.com/x/ne.dll?bh0bkyd2 => All Service Ports, but you are barking up the wrong tree by worrying about ports.

Try setting the MTU on your router to 1400 or so. If that "fixes" the problem it would indicate that your provider does not have their network equipment properly configured.

"ALL RED CARD HOLDERS TO NETWORK SUPPORT, PLEASE!"

Port 80 is not totally blocked, as you are accessing this site using port 80.
Port 80 would only need to be open incoming if you were running your own webserver.

Have you tried sending a 100 byte text file to DropBox? If that works, but larger text files don't, then nails the issue to be an MTU one most likely/

Hi, you can calculate the MTU value and it does work, my connection produced 1492 which is what Orange recommend. I set my Orange Bright Box router to MTU 1500 before the test.

http://www.dslreports.com/faq/695

In reply to a post by E7er:

I set my Orange Bright Box router to MTU 1500 before the test.

Eh? BrightBox has hard-coded max MTU of 1492.

So you never actually proved anything ; MTU on BTw WBC is actually 1500.

In reply to a post by XRaySpeX:

In reply to a post by E7er:

I set my Orange Bright Box router to MTU 1500 before the test.

Eh? BrightBox has hard-coded max MTU of 1492.

So you never actually proved anything ; MTU on BTw WBC is actually 1500.

When Orange moved me from LLU to WBC the MTU 1500 calculated as being required for my connection, now it�s calculating with the new Bright Box router MTU 1492.

I discovered using the hidden parameters page http://192.168.1.1/xc324m12sdlo.htm and change the operation Mode from "Automatic" to G.992.5 (ADSL2+) then the Bright Box MTU can be saved as MTU 1500.

Edited by deleted (Mon 25-Jun-12 23:08:24)

In reply to a post by E7er:

I discovered using the hidden parameters page http://192.168.1.1/xc324m12sdlo.htm and change the operation Mode from "Automatic" to G.992.5 (ADSL2+) then the Bright Box MTU can be saved as MTU 1500.

un Doesn't work for me! Comes up with:

You've entered an unsupported value for 'MTU'. Please use a number between 576 and 1492.

both in Basic & Advanced Set-up.

Edited by XRaySpeX (Tue 26-Jun-12 01:21:28)