postgresql - 如何强制客户端对 postgresql 使用 SSL？

Question

环境:

Windows 10, localhost, same machine
pg 12
node 14
openssl 1.1.1k

我已经阅读并完成了从 this 开始的 pg 文档.
postgresql.conf (在 C:\Program Files\PostgreSQL\12\data 中，我的理解是它控制 pg DB 服务器)

ssl = on # per pg doc: server will listen for both normal and SSL connections on the same TCP port, and will negotiate with any connecting client on whether to use SSL
ssl_cert_file = 'server.crt'
ssl_key_file = 'server.key'
ssl_ciphers = 'HIGH:MEDIUM:+3DES:!aNULL' 
ssl_prefer_server_ciphers = on
ssl_ca_file = 'root.crt' # per pg doc, 18.9.3: To require the client to supply a trusted certificate
ssl_crl_file = ''

pg_hba.conf (在 C:\Program Files\PostgreSQL\12\data 中，我的理解是它对客户端(如 Web API 或任何 DB 消费者)的影响，而不是 DB 服务器)

...
hostssl all             all             127.0.0.1/32 cert clientcert=1
...

pSQL 显示它正在通过 SSL 进行通信:

但是一个简单的node项目可以连接无 SSL :

require('dotenv').config({ path: './environment/PostgreSql.env'});

const pgp = require('pg-promise')();    

const db = pgp(
    {
        user: process.env.PGuser,
        host: process.env.PGhost,
        database: process.env.PGdatabase,
        password: process.env.PGpassword,
        port: process.env.PGport,
        
        ssl: false  // optional, but true gets code: 'UNABLE_TO_VERIFY_LEAF_SIGNATURE'
    }
);

var sql = 'select * from current.testssl()';  
db.any(sql)
    .then
    (
        good => 
        { 
            console.log(good); // ssl false gets data 
        },
        bad => 
        { 
            console.log(bad); 
/* ssl true gets 
at TLSWrap.callbackTrampoline (internal/async_hooks.js:130:17) 
{
code: 'UNABLE_TO_VERIFY_LEAF_SIGNATURE', 
stack: 'Error: unable to verify the first certificate…ckTrampoline (internal/async_hooks.js:130:17)', 
message: 'unable to verify the first certificate'
}
*/
            
        }
    );

最终解决方案基于@Lauranz Albe 和@jjanes，pg_hba.conf:

# TYPE  DATABASE        USER            ADDRESS                 METHOD
hostnossl  all  all  0.0.0.0/0  reject  # must be the 1st line!
host    all             all             127.0.0.1/32            md5
host    all             all             ::1/128                 md5
host    replication     all             127.0.0.1/32            md5
host    replication     all             ::1/128                 md5
hostssl all             all             0.0.0.0/0   cert clientcert=verify-full

Answer 1

在 pg_hba.conf 的开头添加以下行:

hostnossl  all  all  0.0.0.0/0  reject

然后你必须重新加载 PostgreSQL(如果重新加载导致任何错误，请检查日志文件)。
这将拒绝所有使用未加密 TCP 连接的连接尝试。
见 the documentation详情。