I did the install of the remote probe installer on a server and did the set up to the remote probe to start monitoring servers in a different domain, copied and paste the access key from the PRTG web interface. On the core server it was set up to accept connection from remote probes on all IPs. On the PRTG web interface the probe connections were set up to allow IPs = Any. After all this I was looking for the notification on the web interface to accept the remote probe but i never got it on the ToDos section, so i went back and check the logs for the PRTG Network Monitor Probe Administrator Tool and here is what i got:
5/31/2012 11:21:05 AM Connected to XXX.XXX.XX.X:23560 5/31/2012 11:21:05 AM Login NOT OK: Access denied by IP filter! 5/31/2012 11:21:05 AM Try again at 5/31/2012 4:26:06 PM 5/31/2012 11:21:06 AM Connected 5/31/2012 11:21:06 AM Wait till 5/31/2012 4:26:06 PM 5/31/2012 11:21:06 AM Send Login
Thanks in advance.