firewall packet-filter default permit interzone local trust direction inbound. {. y2 ^- D6 M$ [. T8 l
firewall packet-filter default permit interzone local cn2 direction inbound, \: G g7 s7 N
firewall packet-filter default permit interzone local public direction inbound, i6 R- g `+ y- G# o
请问这3条是什么意思?