hello friends, in my office i had configured vpn in fedora 7 every thing is fine below is the lan setup, Configuration is; adsl router ->eth1 192.168.1.103 with gateway ip address of adsl router (192.168.1.254) box -> eth0 network on subnet 192.168.2.107 with gateway ip address of eth1 (192.168.1.103) internal lan ip addresses -> box in the range 192.168.2.X have the gateway specified as 192.168.2.107 (ip address of the ethernet card they are connected to) Flow; request from lan box 192.168.2.X -> eth0 (router box 192.168.2.103) -> eth1 (192.168.1.107) -> adsl 192.168.1.254 Reply; 192.168.1.254 -> 192.168.1.103 -> 192.168.2.107 -> 192.168.2.X now if i have to relay internet to lan through linux box, so i have to do ipmasquerading so plz guide me in configuring ipmasquerading so that lan can get the access of internet through linux box. thx