SuSEFirewall2 question

Hi, All ! I have interesting (I think) question about SuSE firewall - I installed it many times very successfull using NAT, but I was asked to configure it to protected network with public addresses and .... I failed ! I ended up FW_FORWARDing all the traffic back and forth, but this is just a temp solutions. Did anyone setted up SuSEFirewall2 in similar enviroment ? If so - please help ! TIA, George Michelson