Difference between revisions of "Cisco IOS: Configure public RSA key authentication"
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(Created page with " Main Command: <code>ip ssh pubkey-chain</code><ref>https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/sec_usr_ssh/configuration/15-s/sec-usr-ssh-15-s-book/sec-secure-shell-v2....") |
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* [[Digital Media Concepts/RSA (cryptosystem)]] | * [[Digital Media Concepts/RSA (cryptosystem)]] | ||
* [[OpenSSH/Configure OpenSSH to allow Public-key authentication]] | * [[OpenSSH/Configure OpenSSH to allow Public-key authentication]] | ||
| − | |||
* <code>ssh-keygen</code> | * <code>ssh-keygen</code> | ||
Revision as of 14:38, 18 December 2019
Main Command: ip ssh pubkey-chain[1]
Configuration Example in Linux:
1. Generate your key if you do not have already one: ssh-keygen
2. Split your key in 72 characters lines: fold -b -w 72 ~/.ssh/id_rsa.pub and copy output removing ssh-rsa and last part: username@hostname
3. Configure switch/router
Router_name_1#configure terminal Router_name_1(config)#ip ssh pubkey-chain Router_name_1(conf-ssh-pubkey)#username YOUR_USERNAME Router_name_1(conf-ssh-pubkey-user)#key-string Router_name_1(conf-ssh-pubkey-data)#AAAAB6NzaC1yc2EAAAABJQAAAQEAijoMF9oBwyQxwYbVlFprz+fG8oe5uAcCxwMw Router_name_1(conf-ssh-pubkey-data)#eIR1lyAnDJIsYbTbcdm+n5KiQnCt2561MpN4yOFpajFNM/dqH7/jYaqaicHCSV2F Router_name_1(conf-ssh-pubkey-data)#RGauEp7FzN/uXxsX7mii6qOuxovl9OflLpXcvH5QH6551ycmL8nIv8UCY8uayiGI Router_name_1(conf-ssh-pubkey-data)#INsC0LyKEctWDW6qWp43T7rhcP0y4JoMraTCZLIPNE0Bo0bHgnGLg6fEvJmyB3sX Router_name_1(conf-ssh-pubkey-data)#H+7BaxHdYKg2OcIgVqYzclWhDwxj32kqd1BCq089iBMrb4QppDU2eM/t22iK29mn Router_name_1(conf-ssh-pubkey-data)#eqOGTiCkxB80ix+KULT9okmqkj3TbhCpunTfuPCCRNrjqndBsw== Router_name_1(conf-ssh-pubkey-data)#exit Router_name_1(conf-ssh-pubkey-user)#exit Router_name_1(conf-ssh-pubkey)#exit Router_name_1(config)#
View config:
Posible errors:
%SSH: Failed to decode the Key Value. Make sure you split your key on multiple lines with fold command
Related Activities
- Cisco IOS/Associate a user with default higher privileges using
usernamecommand
See also
- Digital Media Concepts/RSA (cryptosystem)
- OpenSSH/Configure OpenSSH to allow Public-key authentication
ssh-keygen
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Source: https://en.wikiversity.org/wiki/Cisco_IOS/Configure_public_RSA_key_authentication
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