HOWTO for nftp
nftp allows plain old FTP to be used redirected through a NOPEN
connection.
Connect to a remote NOPEN server you want to redirect ftp through.
Run this command there:
-tunnel 12121 udp
Then, in a local window:
nftp -r NOPEN-SERVER-IP TARGETIP
where NOPEN-SERVER-IP is the IP on the NOPEN server that will be
conversing with the remote FTP server; and
TARGETIP is the ACTUAL IP of the FTP server.
Don't worry, in NOPEN redirect mode (with -r), nftp will not contact
TARGETIP directly.
NOTE: Once nftp exits, the "-tunnel" on the NOPEN server will exit.
nftp is a complete ftp client. See "man nftp.1" for complete client
details.