Does the newer version of NSclient use additional ports that the older version didn't use? ie 12489 It doesn't look like the older client uses this port and I know we don't have it open on the firewall.
When using version 0.3.9 328 I selected both check_nt and check_nrpe (I received a socket error if I didn't check both)

When installing 4.4.23 using the same checks it will not work?

I guess I'm looking for verification that the newer client needs port 12489 open on the firewall to work. Did the older versions require this port to work?
Thanks