The Dynamic Firewall Filter Library

You use the functions in libdfwd, on the Routing Engine or the Multiservices PIC, to add firewall filters. Two basic filter types are supported, as defined in the junos_dfw_filter_types_t structure:

Each filter type permits certain functions. Functions permitted on a classic filter are as follows:

MATCH FUNCTIONS:

ACTION FUNCTIONS: The following functions are permitted on a fast update filter:

MATCH FUNCTIONS:

ACTION FUNCTIONS: Supported address families for fast update filters are as follows:

For more information about using in libdfwd, see Dynamic Firewalls in the Fundamentals topics, and the programming task Writing a Dynamic Firewall Filter.
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