Openssh client: Invalid key length
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Error message from Openssh client when connecting to a Cisco router/switch:
ssh_dispatch_run_fatal: Connection to 10.10.10.4 port 22: Invalid key length
Solution, execute in Cisco IOS:
crypto key zeroize rsa crypto key generate rsa modulus 2048
OpenSSH 7.6 (October 2017)
- Refuse keys length <1024 bits in length and improve reporting for keys that do not meet this requirement.
Related terms[edit]
See also[edit]
- SSH:
ssh, TLS,.ppk, .pem, .crt, .pub, ED25519, Key exchange method (KEX), public key, private key,ssh -Q kex,IAMUserSSHKeys,known_hosts, ssh tunnel, Dropbear
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