netfilter

const (
	Filter   = Table("filter")
	Nat      = Table("nat")
	Mangle   = Table("mangle")
	Raw      = Table("raw")
	Security = Table("security")

	Prerouting = Chain("PREROUTING")
	Input      = Chain("INPUT")
	Forward    = Chain("FORWARD")
	Output     = Chain("OUTPUT")

	Invalid     = State("INVALID")
	Established = State("ESTABLISHED")
	New         = State("NEW")
	Related     = State("RELATED")
	Untracked   = State("UNTRACKED")

	TCP  = Protocol("tcp")
	UDP  = Protocol("udp")
	ICMP = Protocol("icmp")

	Drop     = Target("DROP")
	Accept   = Target("ACCEPT")
	Queue    = Target("QUEUE")
	NoQueue  = Target("NFQUEUE")
	Reject   = Target("REJECT")
	Redirect = Target("REDIRECT")

	EchoRequest = ICMPType("echo-request")
	EchoReply   = ICMPType("echo-reply")
)