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What is the purpose of a domain name to create SSH keys?

Before enabling SSH on firewall/router, we need to create domain name.

Why is it necessary to do that? What does a domain name do and how is it related to SSH? What role does it play in enabling SSH?

2 Answers 2

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It isn't necessary to create a domain name to create SSH keys. The below syntax will allow you to generate RSA keys for SSH use without one.

router(config)#crypto key generate rsa general-keys label RSAKEY
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  • so domain name is not necessary, its an optional one ya..
    – Trojan
    Commented Feb 15, 2014 at 16:48
  • @satheesh91 Correct, it's not required if you label your own crypto keys.
    – Ryan Foley
    Commented Feb 15, 2014 at 16:50
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IP domain-name command is used to complete the "crypto key generate rsa command". Check out a couple of these links

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    i want some real example kindly share it pls. still in confusion
    – Trojan
    Commented Feb 15, 2014 at 8:03
  • 2
    NE encourages members to give full answers and discourages the use of link answers. If you can expand on your answer a little more, please do.
    – Ryan Foley
    Commented Feb 15, 2014 at 12:50

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