09-24-2014 06:15 AM
Just FYI. All applications are not having Decoder. Hence, i don't think it is not necessary to match decoder to identify an Application.
09-24-2014 06:16 AM
By decoder I mean application signature.
09-24-2014 06:22 AM
Question to your answer is Yes. If you don't have a policy that is not denying "unknown-udp" application, firewall will allow it. In Monitor tab, you will source and destination address and application as "Unknown-UDP". It simply means firewall did not have signature for the packets it was seeing. You can also deny it by denying "unknown-udp" in security policy but is however configurable and is based on your requirement. Hope that helps.
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