emqx 关闭匿名访问和必须匹配身份认证才能访问

https://docs.emqx.cn/broker/v4.2/

版本4.2

修改 /etc/emqx/emqx.conf 的配置项

## Allow anonymous authentication by default if no auth plugins loaded.
## Notice: Disable the option in production deployment!
##
## Value: true | false
allow_anonymous = false

## Allow or deny if no ACL rules matched.
##
## Value: allow | deny
acl_nomatch = deny

重启emqx：

emqx restart