problem with 2 nics and cable internet

P

Piggy

I added a nic to my 2000 server for my cable modem which uses DHCP. If
I do not remove the default gateway setting on the network card
connected to the workstations I am unable to browse the internet. I
have probably done something completey wrong. I have not seen anything
mentioned of this on the net. How do I have a default gateway set on
my nic for my internal network (or do I even need one) and also see
the internet on my other network card.
 
R

Roland Hall

in message
: I added a nic to my 2000 server for my cable modem which uses DHCP. If
: I do not remove the default gateway setting on the network card
: connected to the workstations I am unable to browse the internet. I
: have probably done something completey wrong. I have not seen anything
: mentioned of this on the net. How do I have a default gateway set on
: my nic for my internal network (or do I even need one) and also see
: the internet on my other network card.

Hey Piggy...

http://support.microsoft.com/default.aspx?scid=kb;en-us;Q299801

HTH...

--
Roland Hall
/* This information is distributed in the hope that it will be useful, but
without any warranty; without even the implied warranty of merchantability
or fitness for a particular purpose. */
Online Support for IT Professionals -
http://support.microsoft.com/servicedesks/technet/default.asp?fr=0&sd=tech
How-to: Windows 2000 DNS:
http://support.microsoft.com/default.aspx?scid=kb;EN-US;308201
 
B

BT

Hello Piggy

Could you show me the routing table on the 2000 server and tell me which ip
is for your internal network and which is for your cable modem.

Thanks
BT
 
P

Piggy

According to the article it tells me to use the ISP DNS and WINs for
my internal Network interface card.

----------------------------------------------
the internal network:

TCP/IP Address: 192.168.0.1
Subnet Mask: 255.255.255.0
No Default Gateway
Domain Name System (DNS) Server: Provided by your Internet service
provider (ISP)
Windows Internet Naming Service (WINS) Server: Provided by your ISP
-----------------------------------------------

Doesn't my NIC need the information for my DNS and WINS?

I also want to note that I am not routing any workstations through my
server to the internet. If I want anyone else besides the person on
the server to connect to the internet I am adding a nic to their
workstation and connecting them to a hub on the cable modem.
 
P

Piggy

BT said:
Hello Piggy

Could you show me the routing table on the 2000 server and tell me which ip
is for your internal network and which is for your cable modem.

Microsoft Windows 2000 [Version 5.00.2195]
(C) Copyright 1985-2000 Microsoft Corp.

C:\>route print
===========================================================================
Interface List
0x1 ........................... MS TCP Loopback interface
0x1000003 ...00 04 5a 46 80 56 ...... Network Everywhere Fast Ethernet Adapter(N
C100 v2) NDIS5 Driver
0x1000004 ...00 04 61 47 54 df ...... NVIDIA nForce MCP Networking Adapter Drive
r
===========================================================================
===========================================================================
Active Routes:
Network Destination Netmask Gateway Interface Metric
0.0.0.0 0.0.0.0 192.168.2.1 192.168.2.85 1
10.0.0.0 255.0.0.0 10.0.0.45 10.0.0.45 1
10.0.0.45 255.255.255.255 127.0.0.1 127.0.0.1 1
10.255.255.255 255.255.255.255 10.0.0.45 10.0.0.45 1
127.0.0.0 255.0.0.0 127.0.0.1 127.0.0.1 1
192.168.2.0 255.255.255.0 192.168.2.85 192.168.2.85 1
192.168.2.85 255.255.255.255 127.0.0.1 127.0.0.1 1
192.168.2.255 255.255.255.255 192.168.2.85 192.168.2.85 1
224.0.0.0 224.0.0.0 10.0.0.45 10.0.0.45 1
224.0.0.0 224.0.0.0 192.168.2.85 192.168.2.85 1
255.255.255.255 255.255.255.255 10.0.0.45 10.0.0.45 1
Default Gateway: 192.168.2.1
===========================================================================
Persistent Routes:
None

C:\>
 
P

Phillip Windell

No. the *external* nic gets everything from the ISP. The *internal nic gets
everything from you.

If the machine only has one nic and is directly connected to the internet,
then there is *no* internal nic,...it only has external. That's probably the
focus of whatever you read.
 
B

BT

Hello

What is your cable internet address?

BT

Piggy said:
"BT" <[email protected]> wrote in message
Hello Piggy

Could you show me the routing table on the 2000 server and tell me which ip
is for your internal network and which is for your cable modem.

Microsoft Windows 2000 [Version 5.00.2195]
(C) Copyright 1985-2000 Microsoft Corp.

C:\>route print
===========================================================================
Interface List
0x1 ........................... MS TCP Loopback interface
0x1000003 ...00 04 5a 46 80 56 ...... Network Everywhere Fast Ethernet Adapter(N
C100 v2) NDIS5 Driver
0x1000004 ...00 04 61 47 54 df ...... NVIDIA nForce MCP Networking Adapter Drive
======================================================================================================================================================
Active Routes:
Network Destination Netmask Gateway Interface Metric
0.0.0.0 0.0.0.0 192.168.2.1 192.168.2.85 1
10.0.0.0 255.0.0.0 10.0.0.45 10.0.0.45 1
10.0.0.45 255.255.255.255 127.0.0.1 127.0.0.1 1
10.255.255.255 255.255.255.255 10.0.0.45 10.0.0.45 1
127.0.0.0 255.0.0.0 127.0.0.1 127.0.0.1 1
192.168.2.0 255.255.255.0 192.168.2.85 192.168.2.85 1
192.168.2.85 255.255.255.255 127.0.0.1 127.0.0.1 1
192.168.2.255 255.255.255.255 192.168.2.85 192.168.2.85 1
224.0.0.0 224.0.0.0 10.0.0.45 10.0.0.45 1
224.0.0.0 224.0.0.0 192.168.2.85 192.168.2.85 1
255.255.255.255 255.255.255.255 10.0.0.45 10.0.0.45 1
Default Gateway: 192.168.2.1
===========================================================================
Persistent Routes:
None

C:\>
 
R

Roland Hall

: No. the *external* nic gets everything from the ISP. The *internal nic
gets
: everything from you.
:
: If the machine only has one nic and is directly connected to the internet,
: then there is *no* internal nic,...it only has external. That's probably
the
: focus of whatever you read.

It appears the documentation in that article is wrong. It does say to point
the internal NIC to the ISPs DNS. I didn't notice that before I posted.

--
Roland Hall
/* This information is distributed in the hope that it will be useful, but
without any warranty; without even the implied warranty of merchantability
or fitness for a particular purpose. */
Online Support for IT Professionals -
http://support.microsoft.com/servicedesks/technet/default.asp?fr=0&sd=tech
How-to: Windows 2000 DNS:
http://support.microsoft.com/default.aspx?scid=kb;EN-US;308201
 
P

Piggy

Sorry I did not specify this before

Internal network is 10.0.0.45
Connection to cable modem is 192.168.2.85

Also Phillip if you look at the article that Roland posted

http://support.microsoft.com/default.aspx?scid=kb;en-us;Q299801

you will see why I thought it was strange to set it up this way.
Logically I would think that what you said is correct but that is not
what the article said. Unless I am not understanding it correctly
 
P

Piggy

Phillip Windell said:
Yes, he told me there was a error in the article earlier this morning.

So what is correct? I don't know what to do with my original problem.
Is there an article that I could look at that is correct and how would
I know if it was correct or not?

Do I even need a default gateway?
 
M

Marina Roos [SBS-MVP]

Hi,

Your internal nic needs to point to the server-IP for DNS. Your external nic
would have the gateway and also the server-IP for DNS.
Check the bindingorder in Network Connections, advanced, advanced and make
sure the internal nic is on top.
The external nic should only have TCP/IP bound to it.
Are you using RRAS as well? In that case, make sure you have applied the
regedits in 292822.
 
R

Roland Hall

in message
: > Yes, he told me there was a error in the article earlier this morning.
:
: So what is correct? I don't know what to do with my original problem.
: Is there an article that I could look at that is correct and how would
: I know if it was correct or not?
:
: Do I even need a default gateway?

You shouldn't need one on the internal network as that interface doesn't
need to route. The NIC for the internal network, on the server, if
192.168.x.x, does not need a gateway since the other workstations will also
be on that subnet. A gateway is a connection to another network. The DNS,
for this NIC, will point to the internal DNS, which is probably running on
that server, or should be.

The NIC, on the server, for the external network [ISP - Internet], needs to
use the DFG assigned by the ISP. It will also point it's DNS to the ISP's
DNS.

The article actually has at least 2 errors I found. You don't point the
internal NIC to the ISP's DNS and you don't point ANY NIC for WINS to the
ISP since they don't provide NetBIOS naming.

Ok, I found another possible error: Under the heading "Adding Private NAT
Interfaces", #7 appears to be incorrect (notice the subnet mask).

This:
If your LAN is using DHCP, click Automatically assign IP addresses by using
DHCP on the Address Assignment tab. If you are not using DHCP, NAT assigns
TCP/IP addresses in the 192.168.0.0 range with a 255.255.0.0 subnet mask by
default.

Should probably be:
If your LAN is using DHCP, click Automatically assign IP addresses by using
DHCP on the Address Assignment tab. If you are not using DHCP, NAT assigns
TCP/IP addresses in the 192.168.0.0 range with a 255.255.255.0 subnet mask
by default.

All workstations would point their DNS ONLY to the internal DNS. But if you
do not have an internal DNS then they will use the DNS proxy supplied by
NAT. The idea of this article is to allow the server to be a server and a
NAT router, use the one public IP for outbound communications for all
systems and route all other systems through the internal NIC-server-external
NIC.

An easier solution is to install a true NAT router and connect everything
there and ONLY use the internal DNS on the server for all systems, add a
forwarder to the ISP, eliminate the need for a second NIC in the server,
lessen the burden of having all outbound/inbound traffic route through it,
eliminate the need for RRAS and NAT on the server and have more hair when
you're done.

--
Roland Hall
/* This information is distributed in the hope that it will be useful, but
without any warranty; without even the implied warranty of merchantability
or fitness for a particular purpose. */
Online Support for IT Professionals -
http://support.microsoft.com/servicedesks/technet/default.asp?fr=0&sd=tech
How-to: Windows 2000 DNS:
http://support.microsoft.com/default.aspx?scid=kb;EN-US;308201
FAQ W2K/2K3 DNS:
http://support.microsoft.com/default.aspx?scid=kb;EN-US;291382
 

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