2 NIC , not as simple as i thought...help needed.

C

cityrock

Hi All,
I have read all night about 2 NIC's in one machine (win xp), but have
no luck up till now.
Here is my setup :

NetWork A :
4 winxp computers connected to router A, which is connected to a cable
modem for internet.
Local Ip : 192.168.2.*
Subnet : 255.255.255.0



Network B:
1 WinXp Computer Connected to router B which is connected to a DSL
modem.
Local Ip : 192.168.0.*
Subnet : 255.255.10.0
To this computer i added another NIC card, which i connected to router
A.
My wish is that this computer will be able to see the local lan of
network A, but still use the internet from Network B.

I read alot about it, not understanding half of the explanations. The
other half i tried with no success.
I tried giving manual Metric for my NIC's , giving the one connected to
router B a lower Metric.
This did work and let me use the internet from B, but when trying to
access local computers the Network Places just Freezes.
When i set the metric back to automaticly, i can see all other
computers on the lan, but my internet also goes through network A, and
not using my B router.

I am lost here, played around with removing default gateways and stuff
( i dont know much what i was doing), but all with no success.

To sum it up in a few words :
Is it possible to block internet access from one NIC card, while still
giving it access to the local lan, and having another NIC for internet
access??

Thanks in advance, i cannot seem to get this figured out myself.
Eli
 
R

Robert L [MVP - Networking]

This is routing issue. Posting the routing table here may help or this case study may help,

Routing One router goes to the corporation email server and another one goes to the Internet. Symptoms: you have one router connecting to the corporation for email ...
www.chicagotech.net/routing.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
Hi All,
I have read all night about 2 NIC's in one machine (win xp), but have
no luck up till now.
Here is my setup :

NetWork A :
4 winxp computers connected to router A, which is connected to a cable
modem for internet.
Local Ip : 192.168.2.*
Subnet : 255.255.255.0



Network B:
1 WinXp Computer Connected to router B which is connected to a DSL
modem.
Local Ip : 192.168.0.*
Subnet : 255.255.10.0
To this computer i added another NIC card, which i connected to router
A.
My wish is that this computer will be able to see the local lan of
network A, but still use the internet from Network B.

I read alot about it, not understanding half of the explanations. The
other half i tried with no success.
I tried giving manual Metric for my NIC's , giving the one connected to
router B a lower Metric.
This did work and let me use the internet from B, but when trying to
access local computers the Network Places just Freezes.
When i set the metric back to automaticly, i can see all other
computers on the lan, but my internet also goes through network A, and
not using my B router.

I am lost here, played around with removing default gateways and stuff
( i dont know much what i was doing), but all with no success.

To sum it up in a few words :
Is it possible to block internet access from one NIC card, while still
giving it access to the local lan, and having another NIC for internet
access??

Thanks in advance, i cannot seem to get this figured out myself.
Eli
 
C

cityrock

Hi Robert
First thank you for the quick reply.
Unfortuanlly i know very little about routing.
Where and how do i post it ?
I do know both my routers have static routes configurations, which i
did not setup, will this help?
With my configuration, how do i configure the routes in order to work
my scenirio?
Thanks again,
Eli
 
C

cityrock

Hi again Robert,
Found how to print my routes.
These are the routes for my machine B, the one that has two nics.

tnx again

IPv4 Route Table
===========================================================================
Interface List
0x1 ........................... MS TCP Loopback interface
0x3 ...00 13 d4 53 d1 6b ...... NVIDIA nForce Networking Controller -
Packet Scheduler Miniport
0x30002 ...02 13 d4 53 e1 0b ...... MAC Bridge Miniport - Packet
Scheduler Miniport
===========================================================================
===========================================================================
Active Routes:
Network Destination Netmask Gateway Interface
Metric
0.0.0.0 0.0.0.0 192.168.2.1 192.168.2.101
20
127.0.0.0 255.0.0.0 127.0.0.1 127.0.0.1
1
192.168.2.0 255.255.255.0 192.168.2.101 192.168.2.101
20
192.168.2.101 255.255.255.255 127.0.0.1 127.0.0.1
20
192.168.2.255 255.255.255.255 192.168.2.101 192.168.2.101
20
224.0.0.0 240.0.0.0 192.168.2.101 192.168.2.101
20
255.255.255.255 255.255.255.255 192.168.2.101 3
1
255.255.255.255 255.255.255.255 192.168.2.101 192.168.2.101
1
Default Gateway: 192.168.2.1
===========================================================================
Persistent Routes:
None
 
R

Robert L [MVP - Networking]

We have many issues.
1. I don't see 192.168.1.0 subnet.
2. Why do you use mask 255.355.10.0?

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
Hi again Robert,
Found how to print my routes.
These are the routes for my machine B, the one that has two nics.

tnx again

IPv4 Route Table
===========================================================================
Interface List
0x1 ........................... MS TCP Loopback interface
0x3 ...00 13 d4 53 d1 6b ...... NVIDIA nForce Networking Controller -
Packet Scheduler Miniport
0x30002 ...02 13 d4 53 e1 0b ...... MAC Bridge Miniport - Packet
Scheduler Miniport
===========================================================================
===========================================================================
Active Routes:
Network Destination Netmask Gateway Interface
Metric
0.0.0.0 0.0.0.0 192.168.2.1 192.168.2.101
20
127.0.0.0 255.0.0.0 127.0.0.1 127.0.0.1
1
192.168.2.0 255.255.255.0 192.168.2.101 192.168.2.101
20
192.168.2.101 255.255.255.255 127.0.0.1 127.0.0.1
20
192.168.2.255 255.255.255.255 192.168.2.101 192.168.2.101
20
224.0.0.0 240.0.0.0 192.168.2.101 192.168.2.101
20
255.255.255.255 255.255.255.255 192.168.2.101 3
1
255.255.255.255 255.255.255.255 192.168.2.101 192.168.2.101
1
Default Gateway: 192.168.2.1
===========================================================================
Persistent Routes:
None
 
C

cityrock

Hi Robert,
I dont know where subnet 192.168.1.0 is.. i know nothing about routes.
one nic uses 192.168.0.3 (part of the 192.168.0.* subnet, and the other
nic uses 192.168.2.101 part of 192.168.2.*).
Do i need 192.168.1.0???
Also I changed the mask of my 192.168.0.* to 255.255.10.0 , as i read
somewhere having two nic's require two diffrent subnets. I can change
the router back to use 255.255.255.0 , as my other router and subnet
has.
I do not know where to go from here on though, any help would be
great..
tnx
We have many issues.
1. I don't see 192.168.1.0 subnet.
2. Why do you use mask 255.355.10.0?
Click to expand...
--
 

Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments. After that, you can post your question and our members will help you out.

Ask a Question

Similar Threads

Can't ping my PC from the internet 5
Wireless connection problem - can't get Linksys NIC to work 2
Approach to use cross-over connect as part of LAN 6
Static/Advanced Routing 7
How do I convert my second Router into an Access Point 0
Laptop NIC / Wireless not connecting to network 1
Local Network or Internet? 5
Optimal network configuration 4

Top