Routing and masquerading on the same NIC

Hello SuSE folkz, Is it possible to do routing and masquerading on the same NIC over the Internet for a host which is a part of other network? Objectives: A separate company network behind the firewall with no Internet access for general users. (Stupid corporate asses) I can access just a one host on the Internet from the inside of this network - my home server. It has two NICs eth0/eth1 and serves as a router and gateway for my home network. I want to be able to go from the closed company network over my home server to the Internet. My question is how to configure my home server to do routing, masquerading and gatewaying on the eth0 over the Internet for my host inside the company network? Thank you in advance for any ideas. Alex