"Robert L [MS-MVP]" <noreply@xxxxxxxxxxx> wrote in message news:eh4I%23R9UFHA.1152@xxxxxxxxxxxxxxxxxxxx...

I would use NAT instead of ICS. quoted from http://www.chicagotech.net/nat.htm

 

Difference between ICS and NAT

To connect a windows 2000/2003 network to the Internet, you may use one of two methods: ICS and NAT. Both ICS and NAT provide translation, addressing, and name resolution services to the network hosts.

ICS is designed to provide a single step of configuration (a single check box) on the computer running Windows 2000/2003 to provide a translated connection to Internet for all of the hosts on the network. However, once enabled, Internet connection sharing does not allow further configuration beyond the configuration of applications and services on the network.

NAT routing protocol is designed to provide maximum flexibility in the configuration of the computer running Windows 2000 Server to provide a translated connection to Internet. NAT requires more configuration steps; however, each step of the configuration is customizable. The NAT protocol allows for ranges of IP addresses from ISP and the configuration of the range of IP addresses allocated to the network hosts.

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.

"Jaime Stuardo" <jstuardo@xxxxxxxxxxxxx> wrote in message news:%23XPbYC0UFHA.3544@xxxxxxxxxxxxxxxxxxxx...

Hi all...

I have a LAN in a site that connects to Internet by mean of an ISP. The
server in that LAN shares Internet access to all LAN computers using
ICS/ICF. Since I have ICS, the server was assigned the IP 192.168.0.1. Let's
name this site as S1.

I have other site that connects to Internet using other ISP. The server
shares Internet using RRAS/NAT configured as a VPN. This server is also
assigned IP 192.168.0.1. Let's name this site as S2.

When I establish the VPN connection from S1 (the client) to S2, all S1 LAN
computers lost connectivity to Internet (but not among them). I think it is
because of IP conflict among servers of S1 and S2..

What is the best way to manage this to work?

Thanks a lot in advance.

Jaime

Relevant Pages

• Re: ZA problems (surprise)
  ... meant to imply it's a known issue if you are running NAT... ... Internet zone security level to "High," the computer running ICS will be ... > ZAP installs were corrupted (ie. installing ZAP over ZA or some other ...
  (comp.security.firewalls)
• NAT configuration issue.... trying to 2 weeks but seems going no w
  ... as i dont want to use third party proxy, i opted for NAT then ICS ... NAT in Windows 2003: Setup and Configuration ... Ethernet adapter Internet: //NIC card which links to the ISP ...
  (microsoft.public.windowsxp.network_web)
• Weird NAT/Routing Issue.
  ... utilizing NAT to connect their network to their ISP. ... IP address configured in a /30 as the router inteface IP, ... The relevant portion of the configuration looks ... simply ping one IP address on the internet so that there is outbound traffic ...
  (comp.dcom.sys.cisco)
• Re: How to set Default Gateway for a connection using RRAS and NAT
  ... I only have successfully configured NAT in a server also with 2 NICS but one ... configuration on NAT, I would be able to connect LAN computers to Internet. ...
  (microsoft.public.windows.server.networking)
• Re: able to ping, but unable to share internet
  ... I have tried the network wizard again and the ICS is running on both PCs. ... PCB still cannot access to Internet. ... Windows IP Configuration ... Ethernet adapter Local Area Connection 3: ...
  (microsoft.public.windowsxp.network_web)