在windows系统上使用ssh进行远程连接到一台Linux服务器：
ssh -i C:\Users\i042416.ssh\KOI.pem -L 9221:localhost:9229 ubuntu@ec2-18-222-162-171.us-east-2.
日志如下，逐行分析。
//这是我windows系统上openSSH的版本号。
OpenSSH_for_Windows_7.9p1, LibreSSL 2.6.5
debug1: Connecting to ec2-18-222-162-171.us-east-2. [18.222.162.171] port 22.
//成功建立连接。
debug1: Connection established.
debug1: identity file
// 这是我本地的private key文件。
C:\Users\i042416\.ssh\KOI.pem type -1
debug1: identity file C:\Users\i042416\.ssh\KOI.pem-cert type -1
debug1: Local version string SSH-2.0-OpenSSH_for_Windows_7.9
// 远程Linux服务器的OpenSSH版本号。
debug1: Remote protocol version 2.0, remote software version OpenSSH_7.6p1 Ubuntu-4ubuntu0.3
debug1: match: OpenSSH_7.6p1 Ubuntu-4ubuntu0.3 pat OpenSSH_7.0*,OpenSSH_7.1*,OpenSSH_7.2*,OpenSSH_7.3*,OpenSSH_7.4*,OpenSSH_7.5*,OpenSSH_7.6*,OpenSSH_7.7* compat 0x04000002
debug1: Authenticating to ec2-18-222-162-171.us-east-2.:22 as ‘ubuntu’
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: algorithm: curve25519-sha256
debug1: kex: host key algorithm: ecdsa-sha2-nistp256
debug1: kex: server->client cipher: chacha20-poly1305@ MAC: compression: none
debug1: kex: client->server cipher: chacha20-poly1305@ MAC: compression: none
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug1: Server host key: ecdsa-sha2-nistp256 SHA256:I1d9+QWgoLGIrXK8NO0J0LmuvTUj1o6I/P//Cjs1rUA
debug1: Host ‘ec2-18-222-162-171.us-east-2.’ is known and matches the ECDSA host key.
debug1: Found key in C:\Users\i042416/.ssh/known_hosts:1
debug1: rekey after 134217728 blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: rekey after 134217728 blocks
debug1: pubkey_prepare: ssh_get_authentication_socket: No such file or directory
debug1: Will attempt key: C:\Users\i042416\.ssh\KOI.pem explicit
debug1: SSH2_MSG_EXT_INFO received
debug1: kex_input_ext_info: server-sig-algs=<ssh-ed25519,ssh-rsa,rsa-sha2-256,rsa-sha2-512,ssh-dss,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521>
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey
debug1: Next authentication method: publickey
debug1: Trying private key: C:\Users\i042416\.ssh\KOI.pem
// 认证成功
debug1: Authentication succeeded (publickey).
Authenticated to ec2-18-222-162-171.us-east-2. ([18.222.162.171]:22).
debug1: Local connections to LOCALHOST:9221 forwarded to remote address localhost:9229
debug1: Local forwarding listening on ::1 port 9221.
debug1: channel 0: new [port listener]
debug1: Local forwarding listening on 127.0.0.1 port 9221.
debug1: channel 1: new [port listener]
debug1: channel 2: new [client-session]
debug1: Requesting no-more-sessions@
// 进入交互式会话
debug1: Entering interactive session.
debug1: pledge: network
debug1: console supports the ansi parsing
debug1: client_input_global_request: rtype hostkeys-00@ want_reply 0
Welcome to Ubuntu 18.04.1 LTS (GNU/Linux 4.15.0-1021-aws x86_64)
现在可以像使用本地电脑一样操作这台远程Linux服务器了：
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