I have a windows 2003 server standard, and when I tried to install VPN

server on RRAS.

It said. I need to have 2 network card to do that, why ?? Anyway can giv eme

advice. Never happened on my windows 2000 server like this b4.

I only have 1 NIC at my machine.



Thank you.

this may help. quoted from http://www.ChicagoTech.net

How to setup VPN on w2k server with one NIC



Symptoms: When attempting to create VPN on w2k server with one NIC, you may

receive "You have chosen the last available connection as the Internet

connection. A VPN server required that one connection be used as the private

network connection" if you select the NIC.



1. You should highlight No internet connection instead of the NIC or LAN

connection.

2. You may try "Manually configured server option".





--

For more and other information, go to  http://www.ChicagoTech.net



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.



Robert Lin, MS-MVP, MCSE & CNE

Networking, Internet, Routing, VPN, Anti-Virus, Tips & Troubleshooting on

http://www.ChicagoTech.net

This posting is provided "AS IS" with no warranties.



" Sara" <vaio9003@yahoo.com> wrote in message

news:u$ASyJvfEHA.3192@tk2msftngp13.phx.gbl...

>I have a windows 2003 server standard, and when I tried to install VPN

> server on RRAS.

> It said. I need to have 2 network card to do that, why ?? Anyway can giv

> eme

> advice. Never happened on my windows 2000 server like this b4.

> I only have 1 NIC at my machine.

>

> Thank you.

>

>

With a single NIC you can configure you machine as a remote server but not

for routing.



Why do we need 2 NIC for setting up RRAS?

A VPN works by making a "virtual" link between two machines or sites which

are using private IP addresses. It achieves this by sending the private

packets across the public Internet as the payload of normal public addressed

packets. In other words, the private packets are inside a public IP wrapper.



The VPN server has two interfaces, one in the private LAN and one in the

public Internet. Traffic which is destined for another private addressed

site or a remote VPN client arrives at the server's private interface. The

server encrypts the packet, encapsulates it in a wrapper which has the

remote site/client public IP on the outside and sends it off through its

public interface. An of course does the reverse with encapsulated traffic it

receives.



A VPN server can operate with only one interface if it is on a private LAN

which connects to the Internet through a router/firewall. The firewall can

take the place of the server's public interface. The remote client connects

to the firewall's public IP, and the VPN traffic can be forwarded through

the LAN to the VPN server. Traffic going from the VPN server is encrypted

and encapsulated as above, and then is sent to the firewall for delivery

through the Internet.



--

Thanks,

Sharoon

---------------------------------------------------------

This posting is provided "AS IS" with no warranties, and confers no rights.



" Sara" <vaio9003@yahoo.com> wrote in message

news:u$ASyJvfEHA.3192@tk2msftngp13.phx.gbl...

> I have a windows 2003 server standard, and when I tried to install VPN

> server on RRAS.

> It said. I need to have 2 network card to do that, why ?? Anyway can giv

eme

> advice. Never happened on my windows 2000 server like this b4.

> I only have 1 NIC at my machine.

>

> Thank you.

>

>

Sharoon,



But why I can setup a VPN server with one NIC on Windows 2000 server?

I do have router like the last paragraphy mentioned, so my question is how

can I setup a VPN server with only one NIC on windows 2003 server now? Thank

you.



Sara







"Sharoon Shetty K [MSFT]" <sharoons@online.microsoft.com> wrote in message

news:%23YcXkP2fEHA.1644@tk2msftngp13.phx.gbl...

> With a single NIC you can configure you machine as a remote server but not

> for routing.

>

> Why do we need 2 NIC for setting up RRAS?

> A VPN works by making a "virtual" link between two machines or sites which

> are using private IP addresses. It achieves this by sending the private

> packets across the public Internet as the payload of normal public

addressed

> packets. In other words, the private packets are inside a public IP

wrapper.

>

> The VPN server has two interfaces, one in the private LAN and one in the

> public Internet. Traffic which is destined for another private addressed

> site or a remote VPN client arrives at the server's private interface. The

> server encrypts the packet, encapsulates it in a wrapper which has the

> remote site/client public IP on the outside and sends it off through its

> public interface. An of course does the reverse with encapsulated traffic

it

> receives.

>

> A VPN server can operate with only one interface if it is on a private LAN

> which connects to the Internet through a router/firewall. The firewall can

> take the place of the server's public interface. The remote client

connects

> to the firewall's public IP, and the VPN traffic can be forwarded through

> the LAN to the VPN server. Traffic going from the VPN server is encrypted

> and encapsulated as above, and then is sent to the firewall for delivery

> through the Internet.

>

> --

> Thanks,

> Sharoon

> ---------------------------------------------------------

> This posting is provided "AS IS" with no warranties, and confers no

rights.

>

> " Sara" <vaio9003@yahoo.com> wrote in message

> news:u$ASyJvfEHA.3192@tk2msftngp13.phx.gbl... 

> eme 

>

>

Configure RRAS as a remote access server. Test the config by making a VPN

connection to the server from a LAN client.



When this all works, forward tcp port 1723 from your router to the RRAS

server's LAN IP. Then try to connect from a remote machine to the router's

public IP address. Because of the port forwarding, the PPTP connection will

be established between the remote client and the RRAS server.



" Sara" <vaio9003@yahoo.com> wrote in message

news:uF0bLr7fEHA.2028@tk2msftngp13.phx.gbl...

> Sharoon,

>

>     But why I can setup a VPN server with one NIC on Windows 2000 server?

> I do have router like the last paragraphy mentioned, so my question is how

> can I setup a VPN server with only one NIC on windows 2003 server now?

Thank[vbcol=seagreen]

> you.

>

> Sara

>

>

>

> "Sharoon Shetty K [MSFT]" <sharoons@online.microsoft.com> wrote in message

> news:%23YcXkP2fEHA.1644@tk2msftngp13.phx.gbl... 

not[vbcol=seagreen] 

which[vbcol=seagreen] 

> addressed 

> wrapper. 

The[vbcol=seagreen] 

traffic[vbcol=seagreen]

> it 

LAN[vbcol=seagreen] 

can[vbcol=seagreen] 

> connects 

through[vbcol=seagreen] 

encrypted[vbcol=seagreen] 

> rights. 

giv 

>

>

With one NIC, you can setup a VPN Server by choosing the "Custom

Configuration" option in the VPN Server.



--

Thanks,

Priya.



------------------

This posting is provided "AS IS" with no warranties, and confers no rights.





" Sara" <vaio9003@yahoo.com> wrote in message

news:uF0bLr7fEHA.2028@tk2msftngp13.phx.gbl...

> Sharoon,

>

>     But why I can setup a VPN server with one NIC on Windows 2000 server?

> I do have router like the last paragraphy mentioned, so my question is how

> can I setup a VPN server with only one NIC on windows 2003 server now?

Thank[vbcol=seagreen]

> you.

>

> Sara

>

>

>

> "Sharoon Shetty K [MSFT]" <sharoons@online.microsoft.com> wrote in message

> news:%23YcXkP2fEHA.1644@tk2msftngp13.phx.gbl... 

not[vbcol=seagreen] 

which[vbcol=seagreen] 

> addressed 

> wrapper. 

The[vbcol=seagreen] 

traffic[vbcol=seagreen]

> it 

LAN[vbcol=seagreen] 

can[vbcol=seagreen] 

> connects 

through[vbcol=seagreen] 

encrypted[vbcol=seagreen] 

> rights. 

giv 

>

>

Sara,



Were you able to set this VPN server?



I have a similar configuration with the same question.



I had established a VPN connection before with the current server (being replaced by a 2003) but not with the 2003 (still in lab).



Regards,

Jonas