Just deployed a few UTM units at the customer site. They are all setup identically. One of the unit is having trouble enabling IPS. when IPS is disabled, everything works fine. However, as soon as I enable the IPS, the internal networks lose internet completely. All external IPs stop responding, not even respond to ping. The only thing still work is the WebAdmin interface. Tried restart the unit but still does the same thing. I compare to the setting with all other units and found no difference. Is there anyone know what could be the problem? I can't open a ticket with support because the customer is using SIP trunk. Demonstrate with support in business hour would kill their phone. I can't get a hold with support in after hour.
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