Hi, I have a simple VB.Net application that copies a file from PC to AS/400 IFS. It works fine if I set the NetServer guest user to QUSER, and set public access on Root, Home and the target directory to full access allowed. But this seems like a huge amount of security for just dropping a file onto the system. I have a vague recollection of hearing that one should never give public all access to Root, because it opens up everything under Root, including the QSYS file system, to public interrogation. I thought that the system would give me a signon dialog if I hadn't accessed the IFS already, but it's not doing that, much to my surprise. So my questions are: 1. What level of security should I have on my IFS Root and directories, 2. Why does a file copy from PC to IFS not work unless I give public access to everything? 3. Shouldn't I get a signon dialog when I try to access the IFS. If so, then can anyone suggest why I may not be getting one? Thanks in advance, Liam.