linux 重装sshd
yum -y remove openssh openssh-server openssh-clients
yum -y install openssh openssh-server openssh-clients
cat /etc/ssh/sshd_config | grep PermitRootLogin # 查看远程登录是否开启 yes
cat -n /etc/ssh/sshd_config | grep PasswordAuthentication # 远程密码登录 yes
将 #PermitEmptyPasswords no # 加# 好注释掉
systemctl restart sshd
#-------- ubuntu 重装sshd -------#
sudo apt-get remove openssh-server openssh-client --purge -y
sudo apt-get autoremove
sudo apt-get autoclean
sudo apt-get update
sudo apt-get install openssh-server openssh-client
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