(C) Mads, Morten, Paul, Stefan

1. Networking
Comparison between Telnet and SSH
Morten, Stefan, Paul, Mads
11th
of November 2010

2. Overview
 Telnet and SSH
 Telnet vs. SSH
 Telnet sequence
 SSH sequence
 Live Demo
 Questions ?

3. Telnet and SSH
 Client-Server protocol
 Remote management of “server”
 Terminal based

4. Telnet vs. SSH
Telnet
 RFC15 (1969)
 Port 23
 Transmit in plain text
 Bandwidth light
 Pure text interface
Secure Shell
 RFC4250 (1995)
 Port 22
 Public Key encryption
 Bandwidth Heavy
 GUI possible, and other
features
Src:http://www.packet-lab.com/main/routing-and-switching/ccent/item/105-ssh-versus-telnet-for-cisco-devices.html

5. telnet session 1/3

6. telnet session 2/3

7. telnet session 3/3

8. SSH session 1/4

9. SSH session 2/4

10. SSH session 3/4

11. SSH session 4/4

12. Live demo
If the time permits us!

13. Questions?