CHAPTER 6
Configuring SSH and Telnet
This chapter contains the following sections:
•
Information About SSH and Telnet, page 59
•
Guidelines and Limitations for SSH, page 61
•
Configuring SSH, page 61
•
Configuration Examples for SSH, page 67
•
Configuring X.509v3 Certificate-Based SSH Authentication, page 68
•
Configuration Example for X.509v3 Certificate-Based SSH Authentication, page 70
•
Configuring Telnet, page 71
•
Verifying the SSH and Telnet Configuration, page 73
•
Default Settings for SSH, page 73
Information About SSH and Telnet
SSH Server
The Secure Shell Protocol (SSH) server feature enables a SSH client to make a secure, encrypted connection
to a Cisco Nexus device. SSH uses strong encryption for authentication. The SSH server in the Cisco Nexus
device switch interoperates with publicly and commercially available SSH clients.
The user authentication mechanisms supported for SSH are RADIUS, TACACS+, and the use of locally
stored user names and passwords.
SSH Client
The SSH client feature is an application running over the SSH protocol to provide device authentication and
encryption. The SSH client enables a switch to make a secure, encrypted connection to another Cisco Nexus
device or to any other device running an SSH server. This connection provides an outbound connection that
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