Sorry by bothering us but i think my explanation in some point was wrong, here is the ERRATA _________Machine A / Internet | _____200.68.69.XXX |/ Fw / Apache |\ | \____192.168.0.254 | | -------------------------------------- | | | 192.168.0.1 192.168.0.25 192.168.0.XXX NT / IIS 1) The goal is: Folowing one link at my isp to 200.68.69.XXX:someport (in my case 15000) to launch an app located in my NT box. (This point works fine only FROM Internet not from my LAN) 2) When im pointing from my LAN to 200.68.69.XXX:15000 (this is because the main app page (not application) is located at my ISP) cant see de IIS (and i think that i must be automaticaly delivered to) Maybe this short (uh)!! Explanation can help Yours, Leonardo