Cisco Systems 2960 Configuring the Switch for Secure Shell

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Catalyst 2960 Switch SoftwareConfiguration Guide

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Chapter8 Configuring Switch-Ba sed Authentication

Configuring the Switch for Secure Shell

Configuring the Switch for Secure Shell

This section describes how to configure the Secure Shell (SSH) feature. To use this feature, yo u must

install the cryptographic (encrypted) software image on your switch. You must obtain authorization to

use this feature and to download the cryptographic software files from Cisco.com. For more information,

see the release notes for this release.

These sections contain this information:

•Understanding SSH, page 8-33

•Configuring SSH, page 8-34

•Displaying the SSH Configuration and Status, page 8-36

For SSH configuration examples, see the “SSH Configuration Examples” section in the “Configuring

Secure Shell” chapter of the Cisco IOS Security Configuration Guide, Cisco IOS Release 12.2, at

this URL:

http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122cgcr/fsecur_c/fothersf/

scfssh.htm

Note For complete syntax and usage information for the commands used in this section, see the command

reference for this release and the command reference for Cisco IOS Release 12.2 at this URL:

http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122cgcr/index.htm.

SSH is a protocol that provides a secure, remote connection to a device. SSH provides more security for

remote connections than Telnet does by providing strong encryption when a device is authenticated. This

software release supports SSH Version1 (SSHv1) and SSH Version 2 (SSHv2).

This section consists of these topics:

•SSH Servers, Integrated Clients, and Supported Versions, page 8-33

•Limitations, page 8-34

The SSH feature has an SSH server and an SSH integrated client, which are applications that run on the

switch. You can use an SSH client to connect to a switch running the SSH server. The SSH server works

with the SSH client supported in this release and with non-Cisco SSH clients. The SSH client also works

with the SSH server supported in this release and with non-Cisco SSH servers.

The switch supports an SSHv1 or an SSHv2 server.

The switch supports an SSHv1 client.

SSH supports the Data Encryption Standard (DES) encryption algorithm, the Triple DES (3DES)

encryption algorithm, and password-based user authentication.