How do I publish TCP printers?
You have to Server Publish your internal printer. The basic steps are: 1) make sure the internal printer is configured as a SecureNAT client (default gateway points to ISA internal interface). 2) create two protocol definitions: one for TCP port 721 Inbound and one for TCP port 515 Inbound. 3) create two server publishing rules and use as Mapped Server Protocol the above created protocol definitions.