mqtt - How can I limit certain topics to be used only by specific clients?

Question

How do I configure emqx v3.2.1 that I used?

Answer 1

EMQX 允许您配置访问控制列表来授权访问主题。

见https://github.com/emqx/emqx/wiki/ACL-Design和https://docs.emqx.io/broker/v3/en/config.html#anonymous-authentication-and-acl-files

例如一个 acl.config 文件：

{allow, {user, "testuser"}, subscribe, ["a/b/c", "d/e/f/#"]}.
{allow, {user, "admin"}, pubsub, ["a/b/c", "d/e/f/#"]}.
{deny, all}.

将只允许客户端testuser订阅主题a/b/c，d/e/f/#同时admin允许发布和订阅这些主题。