XP ICS problem

[bert]

Hello all,

I have a problem with ICS in Windows XP.

My setup is:

- PC1 connected to internet with an Alcatel ADSL USB modem
- PC1 connected to PC2 with a crosscable

I ran the ICS setup wizards - all was working for a few days, but now not
anymore. I cannot get to the internet anymore from PC2.



Tests I did:
- PC1 can ping PC2
- PC2 can ping PC1
- PC1 and PC2 can share files
- PC1 has internet access
- PC2 can't ping anything; when using a web browser it wants to start a
dialup connection connection (using the laptop's has a builtin 56k modem)

When I enable the "Allow other network users to control or disable the
shared Internet connection" feature, then I can see the Internet Gateway on
PC2 and I can shutdown and start the ADSL connection on PC1 from PC2.

So it seems that all the pieces are there, but I just don't know how to
tell PC2 to use the shared internet connection.

Any help would be greatly appreciated.

Greetings,
Bert

 

[Steve Winograd [MVP]]

Hello all,

I have a problem with ICS in Windows XP.

My setup is:

- PC1 connected to internet with an Alcatel ADSL USB modem
- PC1 connected to PC2 with a crosscable

I ran the ICS setup wizards - all was working for a few days, but now not
anymore. I cannot get to the internet anymore from PC2.



Tests I did:
- PC1 can ping PC2
- PC2 can ping PC1
- PC1 and PC2 can share files
- PC1 has internet access
- PC2 can't ping anything; when using a web browser it wants to start a
dialup connection connection (using the laptop's has a builtin 56k modem)

When I enable the "Allow other network users to control or disable the
shared Internet connection" feature, then I can see the Internet Gateway on
PC2 and I can shutdown and start the ADSL connection on PC1 from PC2.

So it seems that all the pieces are there, but I just don't know how to
tell PC2 to use the shared internet connection.

Any help would be greatly appreciated.

Greetings,
Bert

On PC2, run Internet Explorer, go to Tools | Internet Options |
Connections, and configure it to never dial a connection.

These tests should help you find the Internet sharing problem:

1. On PC1, right click the local area network connection and click
Status | Support | Details. It should show:

IP Address: 192.168.0.1
Subnet Mask: 255.255.255.0
Default Gateway: none
DNS Server = none

2. On PC2, right click the local area network connection and click
Status | Support | Details. It should show:

IP Address: 192.168.0.x (1<x<255)
Subnet Mask: 255.255.255.0
Default Gateway: 192.168.0.1
DNS Server = 192.168.0.1

3. If #1 and #2 are right, open a command prompt window on PC2 and
enter these lines. Each one should get four replies:

ping 192.168.0.1
ping 216.239.39.100
ping www.google.com

4. If #1-#3 are right, enter these addresses in Internet Explorer on
PC2. They should both take you to the Google web page:

http://216.239.39.100
http://www.google.com
--
Best Wishes,
Steve Winograd, MS-MVP (Windows Networking)

Please post any reply as a follow-up message in the news group
for everyone to see. I'm sorry, but I don't answer questions
addressed directly to me in E-mail or news groups.

Microsoft Most Valuable Professional Program
http://mvp.support.microsoft.com

 

[bert]

1. On PC1, right click the local area network connection and click

Status | Support | Details. It should show:

IP Address: 192.168.0.1
Subnet Mask: 255.255.255.0
Default Gateway: none
DNS Server = none

All ok here.

2. On PC2, right click the local area network connection and click
Status | Support | Details. It should show:

IP Address: 192.168.0.x (1<x<255)
Subnet Mask: 255.255.255.0
Default Gateway: 192.168.0.1
DNS Server = 192.168.0.1

Aha, DNS Server was set to something else (200.x.x.x). For some reason
it was manually configured. It set it back to automatic and now it is
correctly set to 192.168.0.1.

3. If #1 and #2 are right, open a command prompt window on PC2 and
enter these lines. Each one should get four replies:

ping 192.168.0.1

Works. (Worked already before correcting the DNS).

ping 216.239.39.100
ping www.google.com

These don't work. I also set the connectoin options in Internet Explorer
to "Never dial a connection".


Any ideas?

One funny things: if I do a right-click on my ADSL connection in Network
Connections and choose Properties> Advanced tab> Settings buttons> then
I get "The port number is already used by another entry. Please enter a
unique port number." (Descripition of the service: msmsgs
(192.168.0.26:123320)37616 TCP. -> and 192.168.0.26 was the ip of PC2
just some time ago). Does it have anything to do with this?

Thanks for the quick answer.

 

[Marc Reynolds [MSFT]]

Hi Bert,

Can you give us the ipconfig /all info showing the external interface of
PC1?
Have you tried disabling ICS on PC1, rebooting and then enabling ICS again?
Do you have the Internet Connection Firewall (ICF) enabled on either
computer? Any other firewall software?
From PC2 can you try this - open a command window and type "nslookup". At
the nslookup prompt type "www.yahoo.com". Post the results here.

Thanks,
Marc Reynolds
Microsoft Technical Support

This posting is provided "AS IS" with no warranties, and confers no rights.

 

[bert]

(e-mail address removed) (Marc Reynolds [MSFT]) wrote in

Can you give us the ipconfig /all info showing the external interface
of PC1?

Windows IP Configuration

Host Name . . . . . . . . . . . . : BERT
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : Yes
WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Network Bridge (Network Bridge) 17:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : MAC Bridge Miniport
Physical Address. . . . . . . . . : 52-3A-32-23-E7-FC
Dhcp Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 192.168.0.1
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . :

PPP adapter Alcatel Speedtouch Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : WAN (PPP/SLIP) Interface
Physical Address. . . . . . . . . : 00-53-45-00-00-00
Dhcp Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 80.200.35.29
Subnet Mask . . . . . . . . . . . : 255.255.255.255
Default Gateway . . . . . . . . . : 80.200.35.29
DNS Servers . . . . . . . . . . . : 195.238.2.21
195.238.2.22

Have you tried disabling ICS on PC1, rebooting and then enabling ICS
Yes.

again? Do you have the Internet Connection Firewall (ICF) enabled on

I have the ICF enabled on PC1. (Disabling didn't work.)
On PC2 it's disabled.
No other firewall software.

either computer? Any other firewall software?
From PC2 can you try this - open a command window and type "nslookup".
At the nslookup prompt type "www.yahoo.com". Post the results here.

Default Server: BERT.mshome.net
Address: 192.168.0.1

www.yahoo.com

Server: BERT.mshome.net
Address: 192.168.0.1


DNS request timed out.
timeout was 2 seconds.
*** Request to BERT.mshome.net timed-out

Thanks,
Marc Reynolds
Microsoft Technical Support

Thank you.