Router User Manual

9 Telnet and SSH
Nortel Secure Router 8000 Series
Configuration Guide - Basic Configuration
Nortel Networks Inc. Issue 5.3 (30 March 2009)
Debugging SSH
Debugging affects the performance of the system. After you debug SSH, run the undo
debugging all command to disable debugging.
When a fault occurs, run the debugging command in the user view to locate the fault. For
information about displaying debugging information, see Nortel Secure Router 8000
SeriesConfiguration - System Management (NN46240-601).
Action Command
debugging ssh server { vty index | all }{ message | event |
packet | all }
Enable the SSH debugging
function.
9.5 Configuration examples
This section provides the following example:
z
Example of configuring Telnet terminal services
z
Example of configuring password authentication
z
Example of configuring RSA authentication
9.5.1 Example of configuring Telnet terminal services
Networking requirements
As shown in Figure 9-6, Router A and Router B can ping each other. Users can log on to
Router B from Router A through Telnet.
Figure 9-6 Networking diagram for Telnet mode
GE1/0/0
1.1.1.1/24
GE1/0/0
1.1.1.2/24
RouterB
RouterA
Configuration roadmap
1. Configure the authentication mode and password of the user interface VTY0 to VTY4 on
Router B.
2. Users must enter the password when they log on to Router B from Router A through
Telnet.
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