Microsoft ISA Server 2004

Finally a resolution to the problem posted last week has been found. In ISA server, in your basic firewall rules there is an option called: “FTP Readonly”. This option was default unchecked until in 2004 Microsoft decided to make that default. This caused us a lot of problems we were unable to send data through FTP even though we could successfully connect to FTP servers. So after lots of hard working hours we found that evil checkbox.