This defines the shared secret that is used to encrypt RADIUS dynamic authorisation requests that are sent to this client. The default is the client's Secret.

# 10.20.30.40 has separate secret for dynauth requests
<Client 10.20.30.40>
      Secret 66+6obaFGkmRNs-R
      DynAuthSecret 7e4+674.4a614A1b
</Client>