**Note: Of course you will need a port forwarder or a static NAT rule, along with an access rule allowing the FTP protocol to your FTP server.**
To enable Active FTP on your ASA or PIX:
You may enter the following command on a Cisco ASA Firewall or PIX: fixup protocol ftp 21
When entering that PIX command on an ASA it will auto convert to the ASA's MPF command format automatically or you may enter the following MPF commands directly on the ASA:
service-policy asa_global_fw_policy global
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