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How to Enable SSH and Disable Telnet on Force10 S-Series Switches

Summary: Enable SSH on Dell Force10, disable Telnet on Dell Force10, enable SSH on Dell OS9 switch, disable Telnet on Dell OS9 switch.

This article applies to This article does not apply to This article is not tied to any specific product. Not all product versions are identified in this article.
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Instructions

The objective of this article is to enable a secure connection method, while disabling an insecure method of remote connection, Telnet, on Force10 S-Series Switches.

To enable SSH, disabled by default, and to disable Telnet, enabled by default, complete the following steps:
  1. Enable SSH in the CLI using a console or Telnet connection saving the configuration. 
Dell>
Dell>en
Dell#
Dell#configure
Dell(conf)#ip ssh server enable
Dell(conf)#crypto key generate
Dell(conf)#exit
Dell#show ip ssh
 
SSH server                : enabled.
SSH server version        : v1 and v2.
Password Authentication   : enabled.
Hostbased Authentication  : disabled.
RSA       Authentication  : disabled.
Vty       Encryption      Remote IP
 
Dell(conf)#exit
Dell#copy running-config startup-config
              
File with same name already exist.
Proceed to copy the file [confirm yes/no]: y
  1. Test the remote access using SSH.
    1. Open a terminal emulator program such as Putty
    2. Enter the IP address of the switch in the corresponding box
    3. Set the Connection type to SSH
    4. Click Open
    5. Log in to the switch using the CLI
WARNING: Failure to test a successful login using SSH prior to disabling Telnet could result in the loss of remote access to the switch.
 
  1. Disable Telnet and save configuration using a Putty session SSH in the CLI.
Dell>
Dell>en
Dell#
Dell#configure
Dell(conf)#no ip telnet server enable
Dell(conf)#exit
Dell#copy running-config startup-config
              
File with same name already exist.
Proceed to copy the file [confirm yes/no]: y

Affected Products

Force10 S25N-S50N, Force10 S25-01-GE-24P, Force10 S25-01-GE-24T, Force10 S25-01-GE-24V, Force10 S50-01-GE-48T-V, Force10 S50-01-GE-48T, PowerSwitch S4810P, PowerSwitch S4820T, PowerSwitch S5000, Force10 S50P, Force10 S60-44T, PowerSwitch S6000
Article Properties
Article Number: 000122301
Article Type: How To
Last Modified: 12 Jul 2024
Version:  4
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