Chapter 50 Ssh Terminal Service; Ssh Overview - 3Com 8800 Configuration Manual

3Com Switch 8800 Configuration Guide

Chapter 50 SSH Terminal Service

50.1 SSH Terminal Service

50.1.1 SSH Overview

This chapter introduces the secure shell (SSH) feature. When a user telnets to the
switch from an insecure network, the SSH feature can provide secure information and
powerful authentication functionality, thereby protecting the switch from attacks such as
IP address spoofing and clear text password interception attacks.
The switch can act as either SSH server or SSH client. When used as an SSH server,
the switch supports multiple connections with SSH clients; when used as an SSH client,
the switch supports SSH connections with the SSH server-enabled switch, UNIX hosts,
and so on.
Currently, the switch supports SSH 2.0.
Figure 50-1 and Figure 50-2 illustrate two methods for establishing an SSH channel
between a client and the server:
Connect through a LAN
Connect through a WAN
Workstation Workstation
Server Server
Figure 50-1 Establish an SSH channel through a LAN
100BASE -TX 100BASE -TX
Ethernet Ethernet
Laptop Laptop
50-1
Chapter 50 SSH Terminal Service
Switch
SSH SSH server
PC
SSH SSH client