Different behavior when last client disconnects depending on the IP address

[ScreamMaster]

In my setup I am using UltraVNC Server 1.3.8.1, but if I get a viable solution for a newer version of ultravnc, it would also be good for me.

The advanced configuration includes the following option:

When last client disconnects:

• Do nothing

• Lock workstation (W2K)

• Logoff workstation

Is it possible, via GUI configuration, by edition of configuration files (ultravnc.ini, etc.), or by using scripts, to set UltraVNC Server in a way that it will work in a different way for certain IP addresses? Similar to the AuthHosts field, but for disconnection of such addresses.

For example:
- when address 123.456.123.456 disconnects, do nothing,
- for any other address, logoff workstation, or lock workstation