1. A method for automatically filtering network messages in an aviation network for an aircraft based on a current system context, the method comprising: receiving ( 401 ), by a processor ( 501 ) of a computer system ( 500 ), a network message ( 415 ) transmitted via one or more network packets within the aviation network, wherein the network message is transmitted from a source avionic device to a destination avionic device; establishing ( 403 ), by the processor, a current system context ( 419 ) based on monitoring one or more avionic devices in the aviation network, wherein the system context indicates an aggregate status ( 417 ) of the one or more avionic devices; analyzing ( 405 ), by the processor, an acceptability of the network message by: identifying ( 409 ) a plurality of attributes ( 425 ) corresponding to the network message, wherein the plurality of attributes correspond to header and data fields ( 427 ) of the one or more network packets corresponding to the network message; and determining ( 411 ) the acceptability of the network message within the system context based on one or more filter rules ( 429 ), wherein the one or more filter rules specify what attributes are allowed within a particular system context, wherein the one or more filter rules ( 429 ) are automatically generated ( 433 ) during a testing phase of the aviation network by: capturing ( 451 ) one or more test network packets corresponding to a test functional network flow transmitted within the aviation network; parsing ( 453 ) the one or more test network packets in order to extract one or more test network messages corresponding to the test functional network flow; examining ( 455 ) a test network message of the one or more test network messages in order to identify a plurality of test attributes ( 456 ), wherein the plurality of test attributes correspond to header and data fields of the one or more test network packets corresponding to the test network message; classifying ( 457 ) the plurality of test attributes of the test network message; automatically generating ( 459 ) one or more tables ( 461 ) corresponding to the one or more test network messages, wherein the one or more tables include the one or more filter rules, wherein the one or more tables are chained ( 463 ) based on one or more test attributes of the test network messages; and validating ( 465 ) the one or more filter rules; and forwarding ( 407 ), by the processor, the network message to the destination avionic device if the network message is determined to be acceptable within the system context.