Re: Multihomed RRAS Configurations

From: rgc (rgc_at_discussions.microsoft.com)
Date: 02/23/05 

Date: Tue, 22 Feb 2005 18:37:02 -0800

I have a Lan with 5 computers which is using the 192.168.0.X-192.168.0.254 IP
addresses from the router. The second NIC card I assigned a static IP
address from my ISP which is a different set of IP address. My question is I
want to come through the second NIC card which is on a diffenent subnet and
reach the resources on the local Lan which is where the server has the master
domain and the other computers connected to the domain. I assume I have to
second up the second NIC card with one of the static IP addresses from my
ISP. Please explain how I am suppose to route from the second NIC card to
the Lan using the RRAS server and VPN.

Thanks,
Robert

"Robert L [MS-MVP]" wrote:

> not sure the issue. assuming you have two NICs, one is for the public ip and other is for the private ip, you should setup internal IP as VPN connection. if for some reasons you need two NICs to separate two networks, you should keep just one DHCP and use IP pool for the VPN clients and also enable IP routing. For more and other information, go to http://howtonetworking.com.
>
> Don't send e-mail or reply to me except you need consulting services. Posting on MS newsgroup will benefit all readers and you may get more help.
>
> Bob Lin, MS-MVP, MCSE & CNE
> How to Setup Windows, Network, Remote Access on http://www.HowToNetworking.com
> Networking, Internet, Routing, VPN Troubleshooting on http://www.ChicagoTech.net
> This posting is provided "AS IS" with no warranties.
> I recommend Brinkster for web hosting!
>
> "rgc" <rgc@discussions.microsoft.com> wrote in message news:97242BB3-2383-48CF-A42E-92EBC50148C1@microsoft.com...
> I have Windows 2000 Advanced Server system with two network cards. Each card
> is configured on a seperate subnet. My understanding of DHCP is that it
> configures to the internal network card not the external network card. I am
> creating a VPN connection with the external network card. I am running DNS
> and DHCP on the server on my internal card. The second network card is
> configured with a static IP address from a range of IP address. I want to be
> able to come in two the RRAS server as the external network card or subnet
> and see the resources on the internal network. My understanding is that I am
> creating a multihomed DHCP server which should support multiple NICS. I also
> understand that the server must be physicaly multihomed because the server
> service will bind only the primary IP address on each interface. If the
> internal network has multipe network IDs, and VPN clients need to reach
> resources on these muutiple network IDs, configure the routing table on the
> VPN server. The VPN clients take advantage of the router table on the VPN
> server to reach resources on remote networks. It also recommends that you
> configure the new routing table entries in RRAS GUI interface. My question is
> what configuration is needed in DHCP on the server when you have two nic
> cards. Do you setup the internal network card and then refer the second nic
> card in a the same scope or do you setup another scope referencing the second
> card (external network)and I also am aware that their is a DHCP relay agent
> which works as a protocol router for DHCP messages. Currently, I am able to
> log into the RRAS as a user and that user is seen on the RRAS server but I am
> unable to see any network resources in My Network Places/The network
> neigborhood! I have study many areas of infomation on the internet and I
> have not found any area which explains the proper configuration of a two
> subnets multihomed network running RRAS and DNS & DHCP on a server. I want
> to be able to tunnel on a static IP address on a seperate network card but
> then see the internal network at my office and see all the resources! I have
> to believe that this would be almost a standard configuration for any small
> business who doesn't want to expose his business to the rest of the world.
>
> Thanks,
> Robert
>
> Note: If you need ipconfig /all or need IP routing tables please let me know

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