Generating Ssh Keys; Setting Ssh Key Pair - Cisco ASR 5000 Administration Manual
Staros release 21.1
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Also See for ASR 5000:
- Installation manual (294 pages) ,
- Administration manual (159 pages) ,
- Installation procedure (8 pages)
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Getting Started
• chacha20-poly1305@openssh.com – ChaCha20 symmetric cipher, Poly1305 cryptographic Message
Authentication Code [MAC], OpenSSH
The default string for algorithm in a Normal build is:
blowfish-cbc,3des-cbc,aes128-cbc,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com,
chacha20-poly1305@openssh.com
The default string for algorithm in a Trusted build is:
aes256-ctr,aes192-ctr,aes128-ctr
Step 3
Exit the SSH Configuration mode.
host_name
[local]
host_name
[local]
Generating SSH Keys
The ssh generate command generates a public/private key pair which is to be used by the SSH server. The
v1-rsa keyword has been removed from and the v2-dsa keyword concealed within the ssh generate CLI
command. The only keyword available for generating SSH keys is v2-rsa.
Important
Step 1
Enter the context configuration mode:
host_name
[local]
[local]host_name(config-ctx)#
Step 2
Generate an SSH key pair.
host_name
[local]
host_name
[local]
Setting SSH Key Pair
The ssh key command sets the public/private key pair to be used by the system. The v2-dsa keyword is
concealed in the ssh key command.
Specify the SSH key pair parameters.
[local]host_name(config-ctx)#
Notes:
end
(config-sshd)#
#
The generated key pair remains in use until the command is issued again.
context context_name
(config)#
ssh generate key type v2-rsa
(config-ctx)#
(config-ctx)#
ssh key data length octets type v2-rsa
ASR 5000 System Administration Guide, StarOS Release 21.1
SSH Keys
29
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