Warn about "Routing and Remote Access"
|Reported by:||LRN||Owned by:|
|Component version:||Operating system type:||Windows|
|Operating system version:||Server 2003|
"Routing and Remote Access" service (which is enabled and set to Autostart by default in some server versions of Windows) might mangle outgoing FTP packets, replacing the server's external IP-address (such as 22.214.171.124) in PASV responses with server's local IP-address (such as 192.168.0.1) if the server in question is running behind NAT.
Such behaviour was observed on Windows SBS Server 2003 SP2. It can be verified by running Wireshark and comparing actual outgoing packets with Filezilla server log records.
Filezilla server should at least warn the user, if this service is running, that it might affect passive mode, otherwise people will be clueless.
I do not know whether this "feature" of RRA can be disabled or not, i have fixed it by disabling RRA itself.