Hi am fairly new at this so please bare with me. Currently we are running IIS 5.0 FTP server in our DMZ behind a Nokia Checkpoint firewall. Every once and a while, we have customers complain that they are getting the error 'Connection reset by remote host'. I have run over the server with a fine tooth comb and haven't come up with anything. I have even gone as far as moving the server out of the DMZ into our regular network and having them test it there. When I do this, no error is recieved. Next, I tried putting it behind a PIX firewall that we have in another DMZ and we were able to reproduce the problem. I found an article on Microsoft's Knowledge Base the describes the exact problem, but no real way to fix it. http://support.microsoft.com/default.aspx?scid=kb;en-us;283679
. At this point, I am at a loss of what to do. Our WAN administrator says that the firewalls are setting up to allow ports 20 and 21, however, whenever the server is behind a firewall we get the conneciton error. Can anybody offer any suggestions?