Differences
This shows you the differences between the selected revisions of the page.
| 2018-06-27 | 2018-11-09 | ||
| link update (martin) | dot (martin) | ||
| Line 20: | Line 20: | ||
| ~~AD~~ | ~~AD~~ | ||
| - | The firewall and NAT on the FTP server side have to be configured not only to allow/route the incoming connections on %%FTP%% port 21,((Or implicit FTPS port 990)) but also a range of ports for the incoming data connections. Typically, the %%FTP%% server software has a configuration option to setup a range of the ports, the server will use. And the same range has to be opened/routed on the firewall/%%NAT%%. | + | The firewall and NAT on the FTP server side have to be configured not only to allow/route the incoming connections on %%FTP%% port 21,((Or implicit FTPS port 990.)) but also a range of ports for the incoming data connections. Typically, the %%FTP%% server software has a configuration option to setup a range of the ports, the server will use. And the same range has to be opened/routed on the firewall/%%NAT%%. |
| When the %%FTP%% server is behind a %%NAT%%, it needs to know it's external IP address, so it can provide it to the client in a response to ''PASV'' command. | When the %%FTP%% server is behind a %%NAT%%, it needs to know it's external IP address, so it can provide it to the client in a response to ''PASV'' command. | ||