Connectivity Guide

2. Copy the public key id_rsa.pub to the Dell EMC Networking system.
3. Disable password authentication if enabled.
CONFIGURATION mode
no ip ssh password-authentication enable
4. Enable RSA authentication in SSH.
CONFIGURATION Mode
ip ssh rsa-authentication enable
5. Install user’s public key for RSA authentication in SSH.
EXEC Privilege Mode
ip ssh rsa-authentication username username my-authorized-keys flash://public_key
If you provide the username, the Dell EMC Networking OS installs the public key for that specific user. In case, no user is
associated with the current logged-in session, the system displays the following error message.
NOTE: If no user is associated with the current logged-in session, the system displays the following error message. %
Error: No username set for this term.
admin@Unix_client#ssh-keygen -t rsa
Generating public/private rsa key pair.
Enter file in which to save the key (/home/admin/.ssh/id_rsa):
/home/admin/.ssh/id_rsa already exists.
Overwrite (y/n)? y
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /home/admin/.ssh/id_rsa.
Your public key has been saved in /home/admin/.ssh/id_rsa.pub.
Configuring Host-Based SSH Authentication
Authenticate a particular host. This method uses SSH version 2.
To configure host-based authentication, use the following commands.
1. Configure RSA Authentication. Refer to Using RSA Authentication of SSH.
2. Create shosts by copying the public RSA key to the file shosts in the directory .ssh, and write the IP address of the host to
the file.
cp /etc/ssh/ssh_host_rsa_key.pub /.ssh/shosts
Refer to the first example.
3. Create a list of IP addresses and usernames that are permitted to SSH in a file called rhosts.
Refer to the second example.
4. Copy the file shosts and rhosts to the Dell EMC Networking system.
5. Disable password authentication and RSA authentication, if configured
CONFIGURATION mode or EXEC Privilege mode
no ip ssh password-authentication or no ip ssh rsa-authentication
6. Enable host-based authentication.
CONFIGURATION mode
ip ssh hostbased-authentication enable
7. Bind shosts and rhosts to host-based authentication.
CONFIGURATION mode
ip ssh pub-key-file flash://filename or ip ssh rhostsfile flash://filename
The following example shows creating shosts.
admin@Unix_client# cd /etc/ssh
admin@Unix_client# ls
moduli sshd_config ssh_host_dsa_key.pub ssh_host_key.pub
ssh_host_rsa_key.pub ssh_config ssh_host_dsa_key ssh_host_key
Security
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