Limiting Passive FTP Port Range on IIS 7.0 / IIS 6.0 / IIS 5.0 - WebTopics - Site Home - MSDN Blogs
Passive FTP uses a range of ports to transfer data. This can be a problem because the port range that IIS uses has to be opened up at the Firewall. Many administrators would like to limit the port range between specific values so that they can have a bett...