创建自签名SSH证书

// 替换域名为你欲申请的IP
openssl req -newkey rsa:4096 \
            -x509 \
            -sha256 \
            -days 3650 \
            -nodes \
            -out example.crt \
            -keyout example.key \
            -subj "/C=SI/ST=Ljubljana/L=Ljubljana/O=Security/OU=IT Department/CN=www.example.com"

详见：https://www.myfreax.com/creating-a-self-signed-ssl-certificate/