Broadband Suddenly Stopped Working

[Charles Law]

[Apologies for multi-post; I have just discovered that this newsgroup may be
a better place to post my query]

I have a colleague who is on Tiscali Broadband (2Mb) in the UK. One day
their browser was working, the next it wasn't, and hasn't since. The machine
configuration didn't change in that time.

The facts:

1. The USB broadband modem (Sagem) connects to the ISP, and reports
connected at 2.3Mb.
2. Browser (IE6 on XP SP2) cannot navigate to any web page; always returns
Page not Found after some time.
3. ipconfig/all shows primary and secondary DNS. Pinging these is
successful.
4. Pinging the server is successful.
5. Pinging self (ISP assigned IP address) is successful.
6. Pinging www.tiscali.co.uk is successful.
7. Pinging www.google.com is successful.
8. Pinging www.microsoft.com is unsuccessful.
9. Pinging other domains is unsuccessful.
10. Symantec LiveUpdate cannot reach Symantec server (ruling out browser
configuration/corruption?)

Tiscali Customer Support can offer no solution based on the above evidence.
They have offered alternative DNS addresses, but these are slightly worse
than the automatic ones in that they do not allow Google to be pinged.

Does anyone here have any suggestions, short of changing ISP? Any ideas on
things to try to get closer to the cause of the problem greatly received.

TIA

Charles

 

[Robert L [MS-MVP]]

if you can ping a web site, this is not DNS issue. You mat want to test the MTU first. Also scan any spyware. this link may help,

Can't access some webs ites Modified the MTU on the computer based on ping test. ... Can't run IE Can't access some web sites Can’t access the Internet via USB after enabling NIC for ...
www.howtonetworking.com/casestudy/cannotaccessweb.htm


How to network Modify MTU · Move FRS Staging Folder · Order of network connections ... Troubleshooting Internet Access · Troubleshooting "No accessible" ...
www.howtonetworking.com/sitemap.htm


How to change mtu ... Network How To, Remote Access How To, Windows How To, Internet How To ... How to change MTU settings. By default, Windows Server 2003, 2000 and XP use a ...
www.howtonetworking.com/VPN/mtu1.htm



Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on http://www.HowToNetworking.com
[Apologies for multi-post; I have just discovered that this newsgroup may be
a better place to post my query]

I have a colleague who is on Tiscali Broadband (2Mb) in the UK. One day
their browser was working, the next it wasn't, and hasn't since. The machine
configuration didn't change in that time.

The facts:

1. The USB broadband modem (Sagem) connects to the ISP, and reports
connected at 2.3Mb.
2. Browser (IE6 on XP SP2) cannot navigate to any web page; always returns
Page not Found after some time.
3. ipconfig/all shows primary and secondary DNS. Pinging these is
successful.
4. Pinging the server is successful.
5. Pinging self (ISP assigned IP address) is successful.
6. Pinging www.tiscali.co.uk is successful.
7. Pinging www.google.com is successful.
8. Pinging www.microsoft.com is unsuccessful.
9. Pinging other domains is unsuccessful.
10. Symantec LiveUpdate cannot reach Symantec server (ruling out browser
configuration/corruption?)

Tiscali Customer Support can offer no solution based on the above evidence.
They have offered alternative DNS addresses, but these are slightly worse
than the automatic ones in that they do not allow Google to be pinged.

Does anyone here have any suggestions, short of changing ISP? Any ideas on
things to try to get closer to the cause of the problem greatly received.

TIA

Charles

 

[Charles Law]

Hi Robert

Thanks for the links. I have just been browsing them and they remind me of
some of the things I did before (a similar problem occurred in the past). I
will try them out this evening.

Charles

if you can ping a web site, this is not DNS issue. You mat want to test the
MTU first. Also scan any spyware. this link may help,

Can't access some webs ites Modified the MTU on the computer based on ping
test. ... Can't run IE Can't access some web sites Can’t access the Internet
via USB after enabling NIC for ...
www.howtonetworking.com/casestudy/cannotaccessweb.htm

How to network Modify MTU · Move FRS Staging Folder · Order of network
connections ... Troubleshooting Internet Access · Troubleshooting "No
accessible" ...
www.howtonetworking.com/sitemap.htm

How to change mtu ... Network How To, Remote Access How To, Windows How To,
Internet How To ... How to change MTU settings. By default, Windows Server
2003, 2000 and XP use a ...
www.howtonetworking.com/VPN/mtu1.htm


Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on
http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on
http://www.HowToNetworking.com
[Apologies for multi-post; I have just discovered that this newsgroup may be
a better place to post my query]

I have a colleague who is on Tiscali Broadband (2Mb) in the UK. One day
their browser was working, the next it wasn't, and hasn't since. The machine
configuration didn't change in that time.

The facts:

1. The USB broadband modem (Sagem) connects to the ISP, and reports
connected at 2.3Mb.
2. Browser (IE6 on XP SP2) cannot navigate to any web page; always returns
Page not Found after some time.
3. ipconfig/all shows primary and secondary DNS. Pinging these is
successful.
4. Pinging the server is successful.
5. Pinging self (ISP assigned IP address) is successful.
6. Pinging www.tiscali.co.uk is successful.
7. Pinging www.google.com is successful.
8. Pinging www.microsoft.com is unsuccessful.
9. Pinging other domains is unsuccessful.
10. Symantec LiveUpdate cannot reach Symantec server (ruling out browser
configuration/corruption?)

Tiscali Customer Support can offer no solution based on the above evidence.
They have offered alternative DNS addresses, but these are slightly worse
than the automatic ones in that they do not allow Google to be pinged.

Does anyone here have any suggestions, short of changing ISP? Any ideas on
things to try to get closer to the cause of the problem greatly received.

TIA

Charles