1--- 2c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al. 3SPDX-License-Identifier: curl 4Long: ftp-port 5Arg: <address> 6Help: Send PORT instead of PASV 7Short: P 8Protocols: FTP 9Category: ftp 10Added: 4.0 11Multi: single 12See-also: 13 - ftp-pasv 14 - disable-eprt 15Example: 16 - -P - ftp:/example.com 17 - -P eth0 ftp:/example.com 18 - -P 192.168.0.2 ftp:/example.com 19--- 20 21# `--ftp-port` 22 23Reverses the default initiator/listener roles when connecting with FTP. This 24option makes curl use active mode. curl then commands the server to connect 25back to the client's specified address and port, while passive mode asks the 26server to setup an IP address and port for it to connect to. \<address\> 27should be one of: 28 29## interface 30e.g. **eth0** to specify which interface's IP address you want to use (Unix only) 31 32## IP address 33e.g. **192.168.10.1** to specify the exact IP address 34 35## hostname 36e.g. **my.host.domain** to specify the machine 37 38## - 39make curl pick the same IP address that is already used for the control 40connection. This is the recommended choice. 41 42## 43 44Disable the use of PORT with --ftp-pasv. Disable the attempt to use the EPRT 45command instead of PORT by using --disable-eprt. EPRT is really PORT++. 46 47You can also append ":[start]-[end]" to the right of the address, to tell 48curl what TCP port range to use. That means you specify a port range, from a 49lower to a higher number. A single number works as well, but do note that it 50increases the risk of failure since the port may not be available. 51(Added in 7.19.5) 52
