We have a problem with outgoing FTP traffic going through our ISA 2004\nserver from one of our remote sites. It works absolutely fine from our\nmain office, but when the traffic originates from our regional office\n(we connect to their Pix router via a VPN), it fails every time. The\nerror from her workstation is "Windows cannot access this folder. Make\nsure you type the file name correctly, and that you have permission to\naccess the folder. Details: the operation timed out". The user has a\nWindows XP PC but Windows firewall is switched off. There is a rule our\nfirewall to allow access from all our subnets (including those from our\nregional office), so this should be applicable to all no matter what\ntheir location, however as a test I created a new rule specifically for\nthe regional office subnet, which failed. I also started logging on the\nISA server, while the user tried this operation again, and the message\nstated that the protocol was 'unidentified IP traffic' and the action\nwas 'closed connection' (the source network was confired as 'internal\nhowever').\n\nThe guy who looks after the PIX is away at the moment, but I was\ninformed by others that it is not configured to block anything (indeed\nif it was, there would be nothing hitting the ISA server). Something\nseems to be distorting this traffic when it comes from the remote site,\nand I don't know what it is.\n\nAny thoughts?