ssh配置密钥登陆

mona included in Linux

2023-01-16 76 words One minute

Contents

新建非root用户，禁用root登陆

adduser username
apt update && apt install sudo
visudo

#在 User Privilege Specification 下加入一行 username ALL=(ALL) NOPASSWD: ALL
username ALL=(ALL) NOPASSWD: ALL

使用密钥登陆，关闭密码登陆

运行PuTTYgen

点击 Save public key 保存公钥，文件名为 id_rsa.pub

点击 Save private key 保存私钥，文件名为 id_rsa (PuTTY 私钥自带.ppk后缀)

将上方红框内的内容，向下滚动全部复制出来并保存，文件名为 authorized_keys

su username
cd /home/username/
mkdir .ssh
//将红框内容复制进去
vi ~/.ssh/authorized_keys
chmod 600 ~/.ssh/authorized_keys

修改ssh配置

sudo tee /etc/ssh/sshd_config.d/sshd_config.conf > /dev/null <<'EOF'
Port 28446
PermitRootLogin no
PasswordAuthentication no
PubkeyAuthentication yes
EOF

重启ssh

sudo systemctl restart ssh

putty设置密钥登陆

参考