SSH 経由でクラスタ管理にアクセスできません

あるネットワークから新しいネットワークにシステムを移動したあとで、 SSH を使用してシステムにアクセスできない。

[user@vservername1 ~]$ ssh admin@netapp-filer.com -vvvvv OpenSSH_7.4p1, OpenSSL 1.0.2k-fips 26 Jan 2017

debug1: Reading configuration data /etc/ssh/ssh_config

debug1: /etc/ssh/ssh_config line 50: Applying options for *

debug1: /etc/ssh/ssh_config line 57: Deprecated option "useroaming"

debug2: resolving "netapp-filer.com" port 22

debug2: ssh_connect_direct: needpriv 0

debug1: Connecting to netapp-filer.com [1.1.1.1] port 22.

debug1: Connection established.

debug1: key_load_public: No such file or directory

debug1: identity file /home/filerfiler.net/path/.ssh/id_rsa type -1

debug1: key_load_public: No such file or directory

debug1: identity file /home/filerfiler.net/path/.ssh/id_rsa-cert type -1

debug1: key_load_public: No such file or directory

debug1: identity file /home/filerfiler.net/path/ .ssh/id_dsa type -1

debug1: key_load_public: No such file or directory

debug1: identity file /home/filerfiler.net/path/.ssh/id_dsa-cert type -1

debug1: Enabling compatibility mode for protocol 2.0

debug1: Local version string SSH-2.0-OpenSSH_7.4