我正在尝试通过 SSH 从我的 linux 服务器到 Mac 服务器。我确实将 Linux 服务器的公钥复制到了 Mac 服务器的 authorized_keys 文件中。我们在我的 linux 服务器中使用代理。它抛出错误“ssh_exchange_identification：连接被远程主机关闭”。请让我知道如何检查代理是否正在停止 SSH 到远程服务器。我做了 ssh -v administrator@207.52.167.245，下面是详细信息。
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 62: Applying options for *
debug1: Executing proxy command: exec /usr/bin/sss_ssh_knownhostsproxy -p 22 207.52.167.245
debug1: permanently_drop_suid: 1990977432
debug1: identity file /home/us-svclhjenkins/.ssh/id_rsa type 1
debug1: key_load_public: No such file or directory
debug1: identity file /home/us-svclhjenkins/.ssh/id_rsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/us-svclhjenkins/.ssh/id_dsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/us-svclhjenkins/.ssh/id_dsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/us-svclhjenkins/.ssh/id_ecdsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/us-svclhjenkins/.ssh/id_ecdsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/us-svclhjenkins/.ssh/id_ed25519 type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/us-svclhjenkins/.ssh/id_ed25519-cert type -1
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_7.4
ssh_exchange_identification: Connection closed by remote host