Your Guide to Understanding FTP.

Connection Modes

ASCII
BINARY

Transfer Modes

ACTIVE
PASSIVE

Encryption Types

Commands

Access Control

Transfer Parameters

Service Commands

Command Aliases

SECURE FILE TRANSFERS
Secure, Automatically Encrypted, Full Featured, Easy to use FTP Site at a low cost. Free secure online FTP Client!
www.MTFTP.com

An Easy FTP Alternative
Very Secure Yet Easy To Use. NO SOFTWARE NEEDED. An Easy Web Based Alternative to an FTP Site.
FilesToGo.com

LOW COST FTP SITE / SERVER
Professional Full Featured FTP Site / Server / Hosting. Unlimited Space / Users. Free Online FTP Client Software.
www.FTPToGo.com

NOOP

No Operation

This command does not affect anything at all. It performs no action other than having the server send an OK reply. This command is used to keep connections with servers "alive" (connected) while nothing is being done.