I am new to Linux and recently came across a problem:
I have a Debian 4.4.5-8 machine with Proxmox installed. A guest machine has Windows Server 2008 R2 and filezilla server installed (listening port 21, passive mode ports 8022-8030), windows firewall has been switched off, ip - 10.0.1.101.
How to configure iptables correctly so I could have a public ftp access using 8021 port? Is that even possible?