Configuring Ssh And Telnet; About Ssh And Telnet; Ssh Server; Ssh Client - Cisco Nexus 9000 Series Configuration Manual

Configuring SSH and Telnet

This chapter describes how to configure Secure Shell Protocol (SSH) and Telnet on Cisco NX-OS devices.
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About SSH and Telnet

This section includes information about SSH and Telnet.

SSH Server

You can use the SSH server to enable an SSH client to make a secure, encrypted connection to a Cisco NX-OS
device. SSH uses strong encryption for authentication. The SSH server in the Cisco NX-OS software can
interoperate with publicly and commercially available SSH clients.
The user authentication mechanisms supported for SSH are RADIUS, TACACS+, LDAP, and the use of
locally stored usernames and passwords.

SSH Client

The SSH client feature is an application that runs over the SSH protocol to provide device authentication and
encryption. The SSH client enables a Cisco NX-OS device to make a secure, encrypted connection to another
Cisco NX-OS device or to any other device that runs the SSH server. This connection provides an outbound
About SSH and Telnet, on page 127
Licensing Requirements for SSH and Telnet, on page 129
Prerequisites for SSH and Telnet, on page 129
Guidelines and Limitations for SSH and Telnet, on page 129
Default Settings for SSH and Telnet, on page 130
Configuring SSH , on page 130
Configuring Telnet, on page 147
Verifying the SSH and Telnet Configuration, on page 149
Configuration Example for SSH, on page 150
Configuration Example for SSH Passwordless File Copy, on page 151
Configuration Example for X.509v3 Certificate-Based SSH Authentication, on page 153
Additional References for SSH and Telnet, on page 153
Cisco Nexus 9000 Series NX-OS Security Configuration Guide, Release 9.x
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