GRE preprocessor and rules

[Ana Serrano Mamolar <B00315494 () studentmail uws ac uk>]

Hi,

Does somebody know how to use rules to filter by the inner IP in case of GRE encapsultation?

That is, in the following case,



| Eth | IP1 | GRE | IP2 | TCP | Payload |


is it possible by default trigger an alert matching a rule with IP2 ?

Thanks





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