Can't Testing Radius Server with JMeter

I did a test on the LDAP server and Radius server using JMeter.

When testing with JMeter directly on my laptop (server), LDAP and Radius connection with JMeter runs smoothly (local testing).

But when JMeter run on another computer (client) with a LAN connection that is directly connected to my laptop (server), only LDAP can be connected with JMeter, but Radius can't be connected.

I've done the settings such as server IP address and others, but the results remain the same. JMeter already have a LDAP plugin for testing, but Radius don't. I using the additional Radius plugin for JMeter.

What is wrong? All configurations are correct in Radius server (freeradius). There is a 500 error code request timed out appears in JMeter when testing Radius is running.

Please help me. Thanks.