We have moved our Windows 2003 Web Edition server into a VM running on a KVM . Moved all the sites onto it and it has been fine for some months. Site admins using Frontpage have had no problem updating their sites.
But today a user tried to use FTP to edit site contents. And failed. And this is 100% reproducible.
FTP set up the usual Web2003 way - username - virtual directory name, VD target is the web document root.
User logs in OK, but when the FTP client attempts to obtain a directory listing, the client says "entering passive mode" then... "can't get directory contents". Nor can it CD. PWD reports the \virtualdirname. Permission for the user to access the VD have been confirmed. FTP fails the same way even with an adminsitrator logging in.
NOTHING shows in the Windows server logs - in fact it shows a successful login for taht username.
Windows firewall is active but set to permit FTP with no constraints.
SO I'm wondering if the problem lies with the hypervisor (KVM, remember) not properly facilitating the FTP backchannel? The KVM setup was not done by me and I'm not fully up to speed on it, just hoping to get some clues if I'm looking in the right area and what to look for before I go calling folk in!