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unable to connect to internet from networked pc

jacko3158
Newbie
Posts: 5
Registered: 20-11-2007

unable to connect to internet from networked pc

Help required.....i have 2 pc's networked together via a mini hub, the main computer has the broadband modem attached.
All was working fine,...... but now the 2 pc's are networking together OK & the main pc can connect to the internet but the networked pc can not.
Dont know whether i have changed the settings now, dont know what they should be, have system restored the networked pc, but still cant connect to internet.
Any suggestions would be welcomed..............Jacko
12 REPLIES
Plusnet Alumni (retired) orbrey
Plusnet Alumni (retired)
Posts: 10,540
Registered: 18-07-2007

Re: unable to connect to internet from networked pc

On the PC that has the modem attached, open Control panel -> network connections, right click the modem connection and go to properties. Click on the advanced tab, and then select 'allow other network users to connect through this computer's internet connection'. This should allow them to connect.
Hope that helps,
Denzil
Grafter
Posts: 1,733
Registered: 31-07-2007

Re: unable to connect to internet from networked pc

Can you tell us which operating systems are running on each PC? Can each PC see files on the other one? This will at least confirm that the basic network setup is OK.
What firewalls do you have? These often need setting up to allow internet traffic over a network.
jacko3158
Newbie
Posts: 5
Registered: 20-11-2007

Re: unable to connect to internet from networked pc

when i check the box "connect thru this computers internet connection" it takes the network down, when i uncheck the box the network works again,. When the box is checked the other computer still can not connect.
The basic network is up, you can access files from each computer both ways.
Windows XP is on main computer, the other one is XP also.
Dont think i have any firewalls setup.
Community Veteran
Posts: 1,574
Thanks: 3
Registered: 13-04-2007

Re: unable to connect to internet from networked pc

On the pc with the modem open a cmd windows (start/run/cmd) type ipconfig /all
note the ip
do the same on the second pc but look for the default gateway this should be set to the ip from the first pc and the ip should be a similar number to the other pc only the last number should be different.
If this isnt the case change the second IP and default gateway.
jacko3158
Newbie
Posts: 5
Registered: 20-11-2007

Re: unable to connect to internet from networked pc

done as said.......the default gateway is set the same on both pc's,..& ip address is same except last number one digit up on last digit.
Is this correct below?
IP routing enabled - NO (on both)
Wins Proxy Enabled - NO ( on both)
I could copy & paste all info from this cmd for both computers would this help?
Community Veteran
Posts: 1,574
Thanks: 3
Registered: 13-04-2007

Re: unable to connect to internet from networked pc

Post the results
from the second pc post the results of
ping 194.119.131.66
ping www.plus.net
tracert 194.119.131.66
Can both pcs see each other ok?
Can you ping the other pc?
have both pc got dns set (should show up on ipconfig /all.
It sounds as if the settings are ok
Any firewalls if so turn them off and try
jacko3158
Newbie
Posts: 5
Registered: 20-11-2007

Re: unable to connect to internet from networked pc

second pc results are:
Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.
C:\Documents and Settings\Peter>ipconfig /all
Windows IP Configuration
        Host Name . . . . . . . . . . . . : JACKSON
        Primary Dns Suffix  . . . . . . . :
        Node Type . . . . . . . . . . . . : Mixed
        IP Routing Enabled. . . . . . . . : No
        WINS Proxy Enabled. . . . . . . . : No
Ethernet adapter Network Bridge (Network Bridge):
        Connection-specific DNS Suffix  . :
        Description . . . . . . . . . . . : MAC Bridge Miniport
        Physical Address. . . . . . . . . : 32-81-F8-4A-92-A0
        Dhcp Enabled. . . . . . . . . . . : Yes
        Autoconfiguration Enabled . . . . : Yes
        IP Address. . . . . . . . . . . . : 169.254.0.3
        Subnet Mask . . . . . . . . . . . : 255.255.0.0
        Default Gateway . . . . . . . . . : 169.254.0.1
        DHCP Server . . . . . . . . . . . : 169.254.0.1
        DNS Servers . . . . . . . . . . . : 169.254.0.1
                                            169.254.0.1
        Lease Obtained. . . . . . . . . . : 21 November 2007 05:53:39
        Lease Expires . . . . . . . . . . : 22 November 2007 05:53:39
both pc's can see each other & access files from one another.
dont know how to ping?
dont think i have any  firewalls, no zone alarm etc, only avg virus detector.
do you think if i system restored the main pc it would clear it?
Community Veteran
Posts: 1,574
Thanks: 3
Registered: 13-04-2007

Re: unable to connect to internet from networked pc

to ping open cmd prompt like you do for ipconfig and then type
ping 194.119.131.66
ping www.plus.net
tracert 194.119.131.66
post the results
In the mean time replace the dns servers set with
    208.67.222.222
    208.67.220.220
What was the ipconfig /all from pc one?

Not applicable

Re: unable to connect to internet from networked pc

Quote from: jacko3158
        Dhcp Enabled. . . . . . . . . . . : Yes
        Autoconfiguration Enabled . . . . : Yes
        IP Address. . . . . . . . . . . . : 169.254.0.3
        Subnet Mask . . . . . . . . . . . : 255.255.0.0
        Default Gateway . . . . . . . . . : 169.254.0.1
        DHCP Server . . . . . . . . . . . : 169.254.0.1
        DNS Servers . . . . . . . . . . . : 169.254.0.1
                                            169.254.0.1
       
        Lease Obtained. . . . . . . . . . : 21 November 2007 05:53:39
        Lease Expires . . . . . . . . . . : 22 November 2007 05:53:39

The IP addresses are interesting.
When XP can't contact a DHCP server to collect the TCP/IP config, it (by default) automatically assigns a private IP address.
These default Private IP addresses always start 169.254.xxx.xxx, and have a netmask of 255.255.0.0
It appears that this is what is happening in your case, based upon the ipconfig info you have posted.
It could also be the case that your network is configured to use addresses in this range, and perhaps it is after all set up correctly.
The only way to establish the correct settings is for you to also paste up the ipconfig data from your first PC (The one connected to the net)
jacko3158
Newbie
Posts: 5
Registered: 20-11-2007

Re: unable to connect to internet from networked pc

ipconfig data from main pc which connects to internet:
Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.
C:\Documents and Settings\Peter>ipconfig /all
Windows IP Configuration
        Host Name . . . . . . . . . . . . : jacko
        Primary Dns Suffix  . . . . . . . :
        Node Type . . . . . . . . . . . . : Unknown
        IP Routing Enabled. . . . . . . . : No
        WINS Proxy Enabled. . . . . . . . : No
Ethernet adapter Local Area Connection:
        Connection-specific DNS Suffix  . :
        Description . . . . . . . . . . . : NVIDIA nForce MCP Networking Control
ler
        Physical Address. . . . . . . . . : 00-0C-76-14-DC-20
        Dhcp Enabled. . . . . . . . . . . : Yes
        Autoconfiguration Enabled . . . . : Yes
        IP Address. . . . . . . . . . . . : 169.254.0.2
        Subnet Mask . . . . . . . . . . . : 255.255.0.0
        Default Gateway . . . . . . . . . : 169.254.0.1
        DHCP Server . . . . . . . . . . . : 169.254.0.1
        DNS Servers . . . . . . . . . . . : 85.255.116.87
                                            85.255.112.174
        Lease Obtained. . . . . . . . . . : 21 November 2007 08:28:49
        Lease Expires . . . . . . . . . . : 22 November 2007 08:28:49
PPP adapter Wip Tech:
        Connection-specific DNS Suffix  . :
        Description . . . . . . . . . . . : WAN (PPP/SLIP) Interface
        Physical Address. . . . . . . . . : 00-53-45-00-00-00
        Dhcp Enabled. . . . . . . . . . . : No
        IP Address. . . . . . . . . . . . : 84.92.53.51
        Subnet Mask . . . . . . . . . . . : 255.255.255.255
        Default Gateway . . . . . . . . . : 84.92.53.51
        DNS Servers . . . . . . . . . . . : 85.255.116.87
                                            85.255.112.174
Community Veteran
Posts: 1,574
Thanks: 3
Registered: 13-04-2007

Re: unable to connect to internet from networked pc

Its not clear were you are getting the dhcp from. so lets do it manually.
Normally there is 2 tv screens in the task bar click on them and choose settings
change automatic to manual
On the pc which connects to the internet set the following
ip 10.0.0.2 subnet 255.255.255.0  dns 85.255.116.87 and  85.255.112.174
On the other pc
ip 10.0.0.1 subnet 255.255.255.0  default gateway 10.0.0.2 dns 85.255.116.87 and  85.255.112.174
that should work
VileReynard
Seasoned Pro
Posts: 10,912
Thanks: 256
Fixes: 10
Registered: 01-09-2007

Re: unable to connect to internet from networked pc

I thought that the 169.254.*.* is a reserved IANA address for these complicated arrangements where a PC acts as a software switch?
Wouldn't it be easier and infinitely better to scrap the modem and get an ADSL router. You would then have a hardware firewall and you could switch either PC on to access the internet. Probably get a better internet connection too.