Understanding FTP (a collection of useful links)
The File Transfer Protocol (FTP) and Your Firewall / Network Address Translation (NAT) Router / Load-Balancing Router Wikipedia: File Transfer Protocol Active FTP vs. Passive FTP, a Definitive Explanation The FTP2.DetermineSettings Method Issue when an FTP Server is behind a NAT Router FTP Blockers – TCP/IP Port Filtering and Anti-Virus Deep Inspection Firewalls and Passive FTP (also known as Stateful […]