Hi all I have about 10 Public IP addresses, in that one public ip is assaigned to win2k3 server, the server is having 2 NIC's one is for private. I configured NAT it is working fine for local LAN. Now tell me how to configure windows 2003 server to access private LAN from public ip address, from private i am able to access public ip system, but not able to access local LAN from public ip address system. PLease tell me how to configure server to access local LAN from public ip address. thankyou

Its done by the firewall. apparently you forgot to secure your network!!! Never connect a server directly on a wan port. You should install a firewall between your wan router and your network. On most corporate firewall, there is a tools named "one-to-one nat". Also, some firewall have a DMZ port (for servers using public IPs) and a LAN port (for LAN IPs) Danny Larouche, CIW Inet Net+

Setup a VPN. Thats probably the safest. Or if you dont care about people hacking into your system, share out whatever you need on that server. Make sure you have windows file and printer sharing setup. Outside of the LAN you can go to the run prompt and type in \\i.p address

Thanx Danny Larouche & GregH if i remove public interface in NAT/Basic firewall sanp-in, i can able to connect to private LAN. The moment i enable NAT it stops working. please tell me what is the configuration i have to do in NAT/Basic firewall.

If you use NAT, you have to use port forwarding feature. But i don't think it is available in Windows server itself. It is part of the Microsoft ISA server or other third party routing package. With port forwarding, you will specify what LAN ip computer to contact when trafic is received on a specific tcp port (80=web, 25=mail... may be redirect to 192.168.0.3) This is the way it should be done if you want to run an ftp or mail server on a workstation within the LAN. However, if you need to access your LAN from a branch office, VPN is the solution as said Greg. Danny Larouche, CIW Inet Net+