## Abstract To enhance the security of my cloud servers and Mac exposed to the public internet, I plan to replace all password-based authentication with SSH key-based authentication. ## Method ### 1. Generate SSH Key Pair You can easily generate an RSA 4096-bit key pair using a terminal on macOS, Linux, or Windows: ```bash ssh-keygen -t rsa -b 4096 -C "your_email@example.com" ``` After executing this command, you will get two files (by default in `~/.ssh/`): - `id_rsa`: your **private key** (keep it safe!) - `id_rsa.pub`: your **public key** ### 2. Deploy the Public Key To enable key-based login, append the public key to the `authorized_keys` file on the target server: ```bash cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys chmod 700 ~/.ssh chmod 600 ~/.ssh/authorized_keys ``` Make sure you're operating on the correct user's `.ssh` folder on the **server**, not your local machine. > ✅ Once you've done this, you should be able to log in to your server using your SSH key without a password. Loading... ## Abstract To enhance the security of my cloud servers and Mac exposed to the public internet, I plan to replace all password-based authentication with SSH key-based authentication. ## Method ### 1. Generate SSH Key Pair You can easily generate an RSA 4096-bit key pair using a terminal on macOS, Linux, or Windows: ```bash ssh-keygen -t rsa -b 4096 -C "your_email@example.com" ``` After executing this command, you will get two files (by default in `~/.ssh/`): - `id_rsa`: your **private key** (keep it safe!) - `id_rsa.pub`: your **public key** ### 2. Deploy the Public Key To enable key-based login, append the public key to the `authorized_keys` file on the target server: ```bash cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys chmod 700 ~/.ssh chmod 600 ~/.ssh/authorized_keys ``` Make sure you're operating on the correct user's `.ssh` folder on the **server**, not your local machine. > ✅ Once you've done this, you should be able to log in to your server using your SSH key without a password. 最后修改：2025 年 07 月 02 日 © 允许规范转载 打赏 赞赏作者 支付宝微信 赞 如果觉得我的文章对你有用，请随意赞赏
