# # For a description of the syntax of this configuration file, # see the file kconfig-language.txt in the NuttX tools repository. # config NET_IPFILTER bool "Enable IP packet filter (firewall)" default n depends on NET_IPv4 || NET_IPv6 ---help--- Enable this option to enable the IP packet filter (firewall). Our IP packet filter is a netfilter-like packet filter that operates on the IP (and transport) layer. It is a stateless packet filter that can be used to filter packets based on source and destination IP addresses, source and destination ports, protocol, and interface.