通过 TCP 实现的自由半径

Question

我刚刚在我的 Debian 机器上安装了 FreeRadius（版本 3.2.1），并将默认测试客户端的传输协议配置为“tcp”。

client localhost {
    ipaddr = 127.0.0.1
    proto = tcp
    secret = testing123
    require_message_authenticator = no
    nas_type     = other    # localhost isn't usually a NAS...
    limit {
        max_connections = 16
        lifetime = 0
        idle_timeout = 30
    }
}

未进行任何其他配置更改。

使用 radtest 测试显示以下输出：

radtest -x -P tcp bob hello 127.0.0.1 1812 testing123
radclient: Error opening socket: Failed connecting socket: Connection refused

并且服务器（freeradius -X）保持沉默：

Listening on auth address * port 1812 bound to server default
Listening on acct address * port 1813 bound to server default
Listening on auth address :: port 1812 bound to server default
Listening on acct address :: port 1813 bound to server default
Listening on auth address 127.0.0.1 port 18120 bound to server inner-tunnel
Listening on proxy address * port 53608
Listening on proxy address :: port 48219
Ready to process requests

有什么想法或提示表明问题可能出在哪里？