I need to know how to switch ports between an public IP and a private IP, so that I would be able to publish my ISA(2000) server with another port (eg: 4500). And when mi private IP runs through ISA, mi private IP redirects it to a PC (eg: PC that has SQL, so it's port will be 1433). Is this possible? I don´t wont and I can´t publish the same port for 2 internal ports. I have 2 SQL Server running for differents things. Because of that, I need to have in one public IP, two different ports. Depending which port runs through ISA, send it to a PC in the 1433 port.