FTP client active ports
I want to use FTP client (for example ncftp) to connect in active mode.
I have firewall (iptables) on my laptop and most of time I am behind rooter.
With outgoing packets and with passive mode all is working fine.
But some sites accept only active mode.
I could open some port range in firewall and in rooter for active data packets, but I don't know how to solve security issues.
So how should I correctly manage active ftp connection?
How can I set data port range when opening active connection with ncftp (or maybe another ftp client)?
How can I limit that incoming connections to that ports range is accepted only by ncftp or else dropped?
Using Slackware 13.1
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