ssh:connecttohostlocalhostport22:Connectionrefused使用ssh连接时出现的问题：$sshlocalhostssh:connecttohostlocalhostport22:Connectionrefused分析SSH是否启用，端口是否监听检查端口是否监听$ss-tnlpStateRecv-QSend-QLocalAddress:PortPeerAddress:Port从命令结果可以看出，SSH监听端口（22）没有检查sshd.service服务是否开启$systemctlstatussshd.servicesshd.service-OpenSSHDaemonLoaded:loaded(/usr/lib/systemd/system/sshd.service;disabled;vendorpreset:disabled)Active:inactive(dead)sshd.service未激活。原因是ssh服务没有启动，端口没有处于监听状态。解决方案$systemctlstartsshd.service$systemctlstatussshd.servicesshd.service-OpenSSHDaemonLoaded:loaded(/usr/lib/systemd/system/sshd.service;disabled;vendorpreset:disabled)Active:active(running)since周日2018-04-2223:51:43CST;6s前MainPID:9429(sshd)Tasks:1(limit:4915)Memory:1.7MCGroup:/system.slice/sshd.service└─9429/usr/bin/sshd-D4月2223:51:43xiaoliu-manjarosystemd[1]:已启动OpenSSHDaemon.4月2223:51:43xiaoliu-manjarosshd[9429]：服务器侦听0.0.0.0端口22.4月2223:51:43xiaoliu-manjarosshd[9429]：服务器侦听::端口22.$ss-tmlpStateRecv-QSend-QLocalAddress:PortPeerAddress:PortLISTEN01280.0.0.0:ssh0.0.0.0:*skmem:(r0,rb87380,t0,tb16384,f0,w0,o0,bl0,d0)LISTEN0128[::]:ssh[::]:*skmem:(r0,rb87380,t0,tb16384,f0,w0,o0,bl0,d0)$sshlocalhost上次登录时间：4月22日星期日17:22:362018from::1附件命令ss-tnlpsystemctlstatussshd.servicesystemctlstartsshd.servicesshlocalhost参考ArchWiki中SecureShell章节：https://wiki.archlinux.org/in...
