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![]() Pass through this Windows Server router & NAT, meaning I still see the TCP SYN for port 21 still never makes it beyond arriving at the private network interface. ![]() Network profile in Windows Firewall just fine, allowing "inbound" traffic "to port 21" for all/any programs and all/any addresses.īut defining such a rule seems to have no effect on the FTP traffic trying to Turn the Windows Firewall back on for the private network interface, and FTP is blocked for the private network clients again.Īnd I would say "well, I must need to add port 21 & port 20 rules to the Windows Firewall, because the Windows Firewall is blocking this communication." I can create an inbound port 21 & port 20 rule for the Private Port 21, and everything else the FTP client does will work, and passes through NAT just fine. Exclude the private network interface from the Private network profile in Windows Firewall.) Then the TCP SYN for So we're not even talkingĪnything complicated yet like SSL or trying to enter passive/active mode we're not getting past the initial TCP SYN for port 21.Īnd I would say "well, I must need to NETSH ROUTING IP NAT ADD FTP or something like that, because the NAT doesn't seem to want to handle passing through FTP client traffic." (Which I've tried, and it does not make a difference.)īut all I actually have to do to make FTP clients work is turn off Windows Firewall for the private network interface. Wireshark capture traffic across all three network interfaces, the TCP SYN for the remote port 21 is shown as arriving on the private network interface, but is never repeated/forwarded on one of the public interfaces (post-NAT). If a client on the private network tries to initiate a port 21 connection to an FTP server out on the public networks, the TCP SYN never makes it any further than the private network interface of the Windows Server 2012 R2 machine. We're talking about FTP traffic being able to pass through RAS and NAT to the public networks, not "how do I access an FTP service running To be clear, there is NO FTP SERVER on the Windows Server 2012 R2 machine. Servers, non-POP/IMAP mail systems, etc.).Įverything except FTP. Drop inbound connections by default, etc.)Īll of that is working great private network clients can access standard services like HTTP from the public networks, but also successfully access non-standard services for which no Windows Firewall rule exists at all (e.g. It's a non-Domain-joined server, and all the Windows Firewall settings are default. ![]() Windows Firewall is enabled, and the network profiles are logical: The two public network interface connections are running with the Public network profile, and the private network interface connection is assigned the Private network profile. Interfaces so that clients from the non-routable third network can access services on the public networks. Routing & Remote Access enabled so that machine is acting as a router, and NAT is enabled on the two public The FTP Server component is available on Windows 10 Pro as well as on Windows 10 Home, and older versions of the OS, including Windows 8.1 and Windows 7.Windows Server 2012 R2 with three network interfaces two on public networks, and the third is a private non-routable .x network. You won't be able to access your files when the computer is asleep or hibernating. ![]() However, bear in mind that you can only establish a connection as long as the device hosting the service is turned on. In this guide, we outlined the steps to get started with the FTP server feature available on Windows 10, and the steps to view, download, and upload files. Of course, you're not limited to use File Explorer as there are plenty of FTP clients, such as FileZilla that you can use to transfer files. You can avoid going through the steps to reconnect to the FTP server by right-clicking Quick Access in the left pane, and selecting the Pin current folder to Quick Access option. ![]()
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