ssh_exchange_identification: Connection closed by
[liy@GIS ~]$ ssh -vX liy@10.12.82.2
OpenSSH_7.5p1, OpenSSL 1.1.0f-fips 25 May 2017
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Reading configuration data /etc/ssh/ssh_config.d/05-redhat.conf
debug1: Reading configuration data /etc/crypto-policies/back-ends/openssh.config
debug1: /etc/ssh/ssh_config.d/05-redhat.conf line 8: Applying options for *
debug1: Connecting to 10.12.82.2 [10.12.82.2] port 22.
debug1: Connection established.
debug1: key_load_public: No such file or directory
debug1: identity file /home/liy/.ssh/id_rsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/liy/.ssh/id_rsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/liy/.ssh/id_dsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/liy/.ssh/id_dsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/liy/.ssh/id_ecdsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/liy/.ssh/id_ecdsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/liy/.ssh/id_ed25519 type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/liy/.ssh/id_ed25519-cert type -1
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_7.5
ssh_exchange_identification: Connection closed by remote host
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https://www.cnblogs.com/pyng/p/13384117.html
https://blog.csdn.net/lilygg/article/details/86187028
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