Transcript File transfer Protocol (FTP)

Accessing Evitech network via
FTP
by Susan Jansson
File transfer Protocol (FTP)
•An internet protocol that enables the transfer
of files from one computer to another.
•When downloading files to a computer using
Web browser, you often use FTP without even
knowing it.
•Evitech has a FTP server program which can
be accessed with a client program (e.g. WSFTP).
How FTP works
The Protocol Stack - FTP is a service like HTTP (an
application protocol).
3. Application Layer - FTP, HTTP etc.
2. (Security Layer) SSL
1. (Transport Layer) TCP/IP
How FTP works (continued..)
•The FTP client contacts the remote server FTP
daemon which logs a user in.
•A command link is opened between the computers.
This link stays open for the duration of the FTP
session.
•When down- or uploading files, a data connection
is opened - it closes after the file transfer is
completed.
FTP session diagram
Access Server
& Firewall
Evitech FTP
Server
FTP Client
Program
Files being transferred
Your computer
Remote computer
Files are transferred in FTP data
connection in two ways:
•ASCII is used for text, but it changes things like line
feed and carriage return (NOTE: May affect usability
especially in UNIX).
•Binary mode transfer leaves files untouched.
•Most Windows FTP programs can detect
automatically which mode should be used.
Connecting to Evitech FTP
SETTINGS
•Dial-up Number: (09) 72520200
•PPP Account: Unix Account (personal)
•PPP Password: (personal)
•Server assigned IP Address
•Default Gateway: 195.148.144.254
•FTP Server: ftp.evitech.fi
•Host type detected automatically
FTP Client program view
Sources
•Evitech Website.
•One-day course: Internet E-mail & FTP (DDC
Publishing).
•Preston Gralla: How the Internet Works.
•Clipart by Corel & Nokia website.