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LAN, but no Internet ?

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nikmalsch

MIS
Jun 10, 2005
8
DE
Hello,

Hopefully someone can assist me.
Up until recently I had a perfectly good functioning LAN & internet connection between my 2 PCs (W2K). Now I only have the LAN connection, but can no longer access the internet via LAN from the Client PC ("page cannot be displayed") !!

Present Setup:
Client & Host - W2K + IE6.0 with latest updates
NICs:3COM 3C905B-TX. Connection to internet is via USB to EUMEX (German) ISDN splitter. Internet access software is supplied by ISP (SmartSurfer).
On both LANs I'm using "Client for MS Network, File & Print Sharing, NetBui and TCP/IP".
"Enable Internet Connection Sharing" & "Enable on-demand Dialing" on the internet connection are activated.
Eumex (ISDN) settings are all "automatic".
I had static addresses on both machines with the same SubNet Mask (255.255.255.0) and on the Client I used the Default Gateway address of the Host.
IE connection for the Client is set to "LAN" and I'm using "Automatically detect settings" - nothing else is checked.
IE connection for the Host is set to ??

What works:
The Client & Host can ping their own IP addresses (192.168.0.14/192.168.0.150) and their own Names ("second"/"computer") and those of the other machine.
Pinging 127.0.0.1 and 0.0.0.0 and w3.org all work except the Client cannot ping w3.org.


What I have done to date to attempt to fix this:
I have played with all combinations of addresses including automatic assigned addresses.
Deinstalled NetBui, but this doesn't seem to have any affect - so reinstalled.
I have uninstalled the adapters and reinstalled the latest drivers (3COM Ethernet 10/100 PCI TX NIC (3C905B-TX).
Re-installed IE 6.0 (+ latest updates).
Deinstalled and reinstalled Norton Antivirus & Firewall (also ensured that the other PC is included in the exemption list).
Ran Micorosoft AntiSpyware + XoftSpy + HiJackThis (posted to a forum and deleted suggested files) - found and deleted a few SpyWare bugs.
Ran IspFix to see if the problem was in the Winsock.
Changed NIC cards to see if the problem lies there - no luck.
Lastly, Completely formatted both PCs and reinstalled W2K + Ie6 SP1.

Possible Issues:
I thought the problem could be the Firewalls, but after completly formatting and reinstalling w2k + IE6, I attempted to access the net from the Client WITHOUT and firewalls without any success.
I'm not sure this is normal, but when only the Host is turned on the IP address is different to when both machines are on, i.e IP address is 0.0.0.0
Occassionally Windows Explorer crashes when a file on the other machine is opened (e.g. When I work on the Client PC and open and work on a file from the Host PC).

Event Viewer (CLient="second") tells me:
on starting the PC: "Your computer has automatically configured the IP address for the Network Card with network address 00500437BFD7. The IP address being used is 169.254.236.46."
When I attempt to access the internet: "The master browser has received a server announcement from the computer COMPUTER that believes that it is the master browser for the domain on transport NetBT_Tcpip_{C08BC8C4-6CA0-461E-. The master browser is stopping or an election is being forced. " or
"The browser has forced an election on network \Device\NetBT_Tcpip_{C08BC8C4-6CA0-461E-8C93-20411441A18E} because a master browser was stopped." or
"The browser service has failed to retrieve the backup list too many times on transport \Device\NetBT_Tcpip_{C08BC8C4-6CA0-461E-8C93-20411441A18E}. The backup browser is stopping."

Event Viewer (CLient="second") tells me:



Windows 2000 IP Configuration - CLIENT
Host Name . . . . . . . . . . . . : second
Primary DNS Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Mixed
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Local Area Connection :
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : 3Com Etherlink 10/100 PCI TX NIC 10/100 (3C905B-TX)
Physical Address. . . . . . . . . : 00-50-04-37-bf-D7
DHCP Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 192.168.0.14
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.0.150
DNS Servers . . . . . . . . . . . :


Windows 2000 IP Configuration - HOST
Host Name . . . . . . . . . . . . : computer
Primary DNS Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Broadcast
IP Routing Enabled. . . . . . . . : Yes
WINS Proxy Enabled. . . . . . . . : No
Ethernet adapter Local Area Connection 3:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : 3Com Etherlink 10/100 PCI TX NIC 10/100 (3C905B-TX)
Physical Address. . . . . . . . . : 00-50-04-09-d1-f4
DHCP Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 192.168.0.150
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . :
DNS Servers . . . . . . . . . . . :
Ethernet adapter Local Area Connection 2:
Media State. . . . . . . . . . . : CAble Disconnected
Description.......................: Eumex 504PC SE
Physical Address. . . . . . . . . : 00-30-42-ff-fd-01

PPP adapter SmartSurfer2000:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : WAN <PPP/SLIP> Interface
Physical Address. . . . . . . . . : 00-53-45-09-d1-f4
DHCP Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 217.185.7.53
Subnet Mask . . . . . . . . . . . : 255.255.255.255
Default Gateway . . . . . . . . . : 217.185.7.53
DNS Servers . . . . . . . . . . . : 62.53.220.227
193.189.244.205
NetBios over Tcpip................: Disabled
 
I am slightly worried that your second pc is getting an APIPA address from somewhere (the 169.254.*.* address).

I would first of all have a look at starting the ICS wizard on the PC that has the ISDN device and let that act as your DHCP server, it will provide the IP address and DNS addresses for your client.

Give that a try and let me know how it goes.

I should add that another way to get this to work is perhaps to put the external device's ip address as the gateway of your host machine but you run the problem of the ip address changing so ICS is the more logical solution in this instance.
 
Hello Simon,

thanks for looking at this.
The second PC (CLient) gets its IP addresses physically set by me.
Sorry, I so used to setting everything manually can you let me know what steps I need to take to let the ICS wizard on the Host act as the DHCP - should I reset all settings back to "obtain IPs automatically" and than run the ICS or delete all connections and start from new?

Nik
 
Hello Simon,

Found the answer...at last. Seems the stacks (whatever that is) wher stuffed. What I did was to uninstall the NICs, reset the IPs back to "automatically detect", removed internet access software and powered down the PC. Removed the NIC and restarted the PC.
Shut it down again, reloaded all necessary software and suddenly it worked..!
Thanks for all your help.

Nik
 
Stacks are the protocol stacks, in this case TCP IP.

Great that everything is working again :)
 
I have noticed this same situation w/ several Win2k PCs that have recently been upgraded to SP4. Somehow the PCs had internet, email, and TCP/IP printing until the reboot after the Win2k SP4 update. Lost DHCP IP address and cannot release/renew another DHCP address. I don't know if this is spyware or a virus, but I do know that re-imaging the 3 PCs has fixed the "LAN connection but no Internet", email, or TCP/IP printing problems!

 
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