Troubleshooting Tip: Benign SSH Exception in FortiNAC vF7.x

[cmaheu]

Description	This article describes an exception found in the output.master log that can be ignored.
Scope	FortiNAC version F7.2.0 and greater.
Solution	The following exception is benign and due to the Apache sshd library currently used:  2024-11-14 00:06:08.545 +0000 [sshd-SshClient[4f52fea1]-nio2-thread-5] WARN o.a.s.c.session.ClientSessionImpl - exceptionCaught(ClientSessionImpl[NAC-SSH-CBE@/10.59.97.1:22])[state=Opened] SshException: Key type=rsa-sha2-512) not supported by parser=[RSABufferPublicKeyParser - supported=[ssh-rsa], DSSBufferPublicKeyParser - supported=[ssh-dss], ECBufferPublicKeyParser - supported=[ecdsa-sha2-nistp256, ecdsa-sha2-nistp384, ecdsa-sha2-nistp521], SkECBufferPublicKeyParser - supported=[sk-ecdsa-sha2-nistp256@openssh.com], ED25519BufferPublicKeyParser - supported=[ssh-ed25519], OpenSSHCertPublicKeyParser - supported=[ssh-rsa-cert-v01@openssh.com, ssh-dss-cert-v01@openssh.com, ecdsa-sha2-nistp256-cert-v01@openssh.com, ecdsa-sha2-nistp384-cert-v01@openssh.com, ecdsa-sha2-nistp521-cert-v01@openssh.com, ssh-ed25519-cert-v01@openssh.com], SkED25519BufferPublicKeyParser - supported=[sk-ssh-ed25519@openssh.com]] Exception will be suppressed in a future release.