ftp xxx.xxx.xxx.xxx
Connected to xxx.xxx.xxx.xxx.
220 Microsoft FTP Service
Name (xxx.xxx.xxx.xxx:user): username
331 Password required for username.
Password:
230-Welcome
230 User user logged in.
Remote system type is Windows_NT.
ftp> dir
500 Invalid PORT Command.
ftp: bind: Address already in use
ftp>

ifconfig
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1460
        inet 10.132.0.3  netmask 255.255.255.255  broadcast 10.132.0.3
        ether 42:01:0a:84:00:03  txqueuelen 1000  (Ethernet)
        RX packets 19215527  bytes 28123647876 (26.1 GiB)
        RX errors 0  dropped 0  overruns 0  frame 1
        TX packets 10673733  bytes 814976332 (777.2 MiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 1  (Local Loopback)
        RX packets 162643  bytes 54080619 (51.5 MiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 162643  bytes 54080619 (51.5 MiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

iptables -L
Chain INPUT (policy ACCEPT)
target     prot opt source               destination

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination