Cisco ISR4450 Router SSH access denied

ciscocisco-isrssh

I configured an ssh connection on an ISR 4451 router, which always worked perfectly.
For several weeks, every time I want to connect with Putty via SSH, I get an "access denied". I also cant connect from any other device via SSH to the router.

I have created a new user in ISR and created a new SSH key, but even with this, no connection is possible.
SSH connection to other router and switches works fine.

Why I get an access denied?

username admin1 privilege 15 password 7 XXXXXXXX  
line vty 0 4   
exec-timeout 60 0  
password 7 XXXXXXX  
login local  
transport input ssh

But I have:
no aaa new-model

best regards
Sven

Best Answer

If you're using putty, then it's likely that you have "Attempt GSSAPI authentication" enabled. You can find this under Connection>SSH>Auth>GSSAPI. GSSAPI is usually used in Kerberos and not used in Cisco devices

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