I want to use the QoS (Quality of Service) Round Trip sensor to monitor the quality of the network connection between two of my probes. On the QoS Round Trip Sensor's manual page I see the following note:
Note: You must ensure that firewalls, NAT rules, etc. will allow the UDP packets to reach the target probe. The Windows firewall on the target system will be automatically opened by the probe.
I have a few questions regarding this note:
- What exact firewall settings are required?
- Is this saying that the firewall configuration that already allows my Core Server to communicate with all of my Remote Probes is insufficient for the QoS sensor's operation?
- If I configure a round trip QoS sensor on my local probe, do I need to configure the firewalls at remote probes to allow inbound UDP traffic to those sensors?
- Firewall configuration is a hassle. Paessler could probably have avoided that by defining remote probes to open those NAT rules automatically by initiating testing to my local probe, right? I.e.: Sensors on both ends.
- If all of this is necessary, wouldn't it be simpler if I opened a single inbound port on my local firewall and configured QoS sensors on the remote probes pointing at the local probe? Seems a lot of work given that they can already reach my core server.
- Also, I'm looking for better ways to monitor non-VoIP connection quality. Would you say that the PRTG VoIP QoS sensors are good for that as well?