I have to public ip ranges, 1.1.1.0/27 and 1.2.1.0/27. I want to load balance incoming web and email transactions on 1.x.1.3 to my internal exchange server 172.16.1.3. When I had just a single ISP I used the Nat file and did a one:one Nat, but now that it is load balanced, I don''t know how to setup this so that will respond to either and ensure that the outbound is mapped to either ISP on the 1.x.1.3 address. Inbound seems like I would use Dnat in rules, but I am uncertain about the snat. Would I do this in Masq and do one entry for each ISP, with the source as 172.16.1.3? If that is the case how does it know to obey this rule vs the current catch all rule that Masq my LAN traffic 172.16.1.0/24 to 1.x.1.2? Thanks ------------------------------------------------------------------------------ WhatsUp Gold - Download Free Network Management Software The most intuitive, comprehensive, and cost-effective network management toolset available today. Delivers lowest initial acquisition cost and overall TCO of any competing solution. http://p.sf.net/sfu/whatsupgold-sd