Does ssh default/hidden username exist in Cisco IOS related on vty line-based authentication ?

[lnrdnl78d]

Hi Guy

Configuring following:

line vty 0 4 

transport input all

password Pass1

login 

I' m able to access using telnet but using an ssh client it doens't work. It seems "username " is needed.

So is there a "default username" that IOS associate to incoming ssh connecion when vty authentication is based on line password ?

If I use "transport input ssh" in above configuration I'll cut myself off ?

Thankyou in advance

[Jaderson Pessoa]

Hello, for ssh configuration, run commands below:

sw(config)#: crypto key generate rsa (keysize)
sw(config)#: no ip domain-lookup
sw(config)#: username admin privilege 15 password password123!
sw(config)#: line vty 0 15
sw(config-line)#: transport input ssh
sw(config-line)#: login local
sw(config)#: ip ssh version 2


Test connection.

[lnrdnl78d]

Thanks Jaderson

but my question is a bit different.

I'need to know if there is some way to access to a router when configuration is following:

line vty 0 4

transport input ssh

password Pas1

login

Assuming all other configuration is right

Thankyou again

Ciao

Daniele

[Jaderson Pessoa]

Its necessary username to authenticate for ssh.

[Dennis Mink]

There are no separate ssh credentials for ssh. The creds that work for telnet work for ssh as well.

[luis_cordova]

Hi @lnrdnl78d ,

The SSH protocol uses the username to formulate the encryption key, so its configuration is necessary.
I leave the guide for the configuration:

https://www.cisco.com/c/en/us/support/docs/security-vpn/secure-shell-ssh/4145-ssh.html

Regards