Our web application (that gets installed on a client's network server) has a few activeX controls that connect directly to a MySQL database running on Port 20101.

Now all was working fine until the server (Being a Windows XP Professional PC) got SP2 installed on it.

ActiveX controls no longer worked. So I added Port 20101 as an exception on the windows firewall, both TCP and UDP. But now the behaviour is still spontaneous, one day it works, another day the controls don't work.

If I turn off the firewall completely, the controls always work. So why don't the exceptions work correctly like they should?

Please help on this, this is very frustrating!