I have a client that has an application that requires a DNAT to port 80 via UDP. Standard rule, External IP with a destination UDP port 80 maps to an internal IP.
But this doesn't work. In fact, the packet filter rule never logs the UDP attempt at all. At first we thought it was an application issue, so we changed the app to listen on UDP port 88. We simply modify the service definition on the DNAT rule...and boom, it works and the packet is logged.
Change it back to UDP port 80....and nothing. Behind the firewall, the application connects fine on port 80 UDP.
Because the packet isnt shown in the packet filter log it must be getting consumed by a service on the UTM.
Any ideas?
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