Help with Window 2003 server routing

[Ray H]

I am working on the following setup:

Computer A: Windows 2003 Server SP1
Nic1: IP address 193.168.211.1 Mask: 255.255.255.0
Nic2: IP address 192.168.211.2 Mask: 255.255.255.224

Computer B: Windows 2000 Advanced Server SP4
Nic3: IP address 192.168.211.5 Mask: 255.255.255.224 Default Gateway:
192.168.211.2

Nic1 is connected to DSL modem, Nic2 and Nic3 are connect to Ethernet Hub.
I can establish an Internet connection and surf the web on Computer A.
However, on Computer B, I cannot establish a connection to the Internet. I
can ping both Nic1 and Nic2 from Computer B and can ping Nic3 from Computer
A. If I ping an external address from Computer A in resolves and pings
properly, if I ping the same domain name from Computer B it resolves but
does not ping back. Both machines are configured as domain controllers with
AD and DNS installed on each. I have configured DNS forwarders on Computer
A and they seem to be working properly. I think I am missing something in
the routing table but I have no idea what. The routing table below is from
Computer A.

If anyone has an idea it would be appreciated.

Thanks


IPv4 Route Table
===========================================================================
Interface List
0x1 ........................... MS TCP Loopback interface
0x10003 ...00 0c f1 c8 87 b9 ...... Intel(R) PRO/1000 MT Network Connection
0x270005 ...00 53 45 00 00 00 ...... WAN (PPP/SLIP) Interface
===========================================================================
===========================================================================
Active Routes:
Network Destination Netmask Gateway
Interface Metric
0.0.0.0 0.0.0.0 64.218.67.119
64.218.67.119 1
64.218.67.119 255.255.255.255 127.0.0.1 127.0.0.1
50
64.218.67.254 255.255.255.255 64.218.67.119 64.218.67.119
1
64.255.255.255 255.255.255.255 64.218.67.119 64.218.67.119
50
127.0.0.0 255.0.0.0 127.0.0.1
127.0.0.1 1
192.168.211.0 255.255.255.224 192.168.211.2 192.168.211.2
10
192.168.211.2 255.255.255.255 127.0.0.1 127.0.0.1
10
192.168.211.255 255.255.255.255 192.168.211.2 192.168.211.2
10
193.168.211.0 255.255.255.0 193.168.211.1
193.168.211.1 1
193.168.211.1 255.255.255.255 127.0.0.1 127.0.0.1
1
193.168.211.255 255.255.255.255 193.168.211.1 193.168.211.1
1
224.0.0.0 240.0.0.0 192.168.211.2
192.168.211.2 10
224.0.0.0 240.0.0.0 193.168.211.1
193.168.211.1 1
224.0.0.0 240.0.0.0 64.218.67.119
64.218.67.119 1
255.255.255.255 255.255.255.255 64.218.67.119 64.218.67.119
1
255.255.255.255 255.255.255.255 192.168.211.2 192.168.211.2
1
255.255.255.255 255.255.255.255 193.168.211.1 193.168.211.1
1
Default Gateway: 64.218.67.119
===========================================================================
Persistent Routes:
None

 

[Bill Grant]

You will need to enable IP routing on the server for this to work. You
can do that with a registry change, or enable RRAS as a LAN router.

 

[Ray H]

Bill,

I had already enabled RRAS with the LAN routing radio button selected. Any
other thoughts?

Ray H

 

[Bill Grant]

Does it look like this?

Internet
|
DSL (NAT?) router
|
192.168.211.1/24 dg DSL router
RRAS
192.168.211.2/27 dg blank
|
192.168.211.5/27 dg 192.168.211.2

The only default gateway setting on the server should be out to the
Internet.

 

[Ray H]

Actually look like this:

Internet
|
DSL Modem (PPOE)
|
193.168.211.1/24 dg blank
RRAS
192.168.211.2/27 dg blank
|
192.168.211.5/27 dg 192.168.211.2

I left the default gateway blank on Nic1 (193.168.211.1) since it connects
to the DSL Modem via PPOE. The PPOE connection is assigned a DHCP driven
address based on the ISPs servers.

 

[Ray H]

I found that since I was using PPPOE to connect to the Internet I needed to
setup RRAS with the Route Internal LAN and Demand-Dial option. I then had
to add and configure my PPPOE connection under Network Interfaces in RRAS
making sure to include to route IP packets on this interface. I then added
two static routes in the Static Routes section:

0.0.0.0/0 No Default Gateway and set to the PPPOE interface
192.168.211.0/27 No Default Gateway and set to the PPPOE interface

I also added the PPPOE interface to the NAT/Basic Firewall and configured it
as a public interface.

Computer B is now surfing the web like a champ!

 

[Bill Grant]

Glad you sorted it out. PPPoE can be tricky.

I found that since I was using PPPOE to connect to the Internet I
needed to setup RRAS with the Route Internal LAN and Demand-Dial
option. I then had to add and configure my PPPOE connection under
Network Interfaces in RRAS making sure to include to route IP packets
on this interface. I then added two static routes in the Static
Routes section:
0.0.0.0/0 No Default Gateway and set to the PPPOE interface
192.168.211.0/27 No Default Gateway and set to the PPPOE interface

I also added the PPPOE interface to the NAT/Basic Firewall and
configured it as a public interface.

Computer B is now surfing the web like a champ!