  (ե뵡ǽ)
  եȤΤϳΥͥåȥͥåȥ
  ݸ륳ԥ塼ΤȤǤͥåȥΥԥ塼
  顤Υͥåȥ˽ꤹ뤹٤Ƥ̿Ϥޤǽ˥ե
  ޥǸޤʤLinuxޥͥåȥ
  ΥեȤꤷˤ Y Ʋ
  ͥåȥμʥץȥ뤬 TCP/IP ʤ顤ǽФƤ
  "IP:firewalling"ˤ Y ɬפޤޤǽФƤ IP
  졼ɤεǽȤ褦ˤˤ"IP:firewalling" Y 
  ɬפޤ(IP ޥ졼ɵǽȤϡե
  ԥ塼鳰ؤ̿κݤ˥ǡ긵ξ񤭴,
  ΥۥȤˤϥեޥ̿ƤȻפ碌Τ
  . εǽȤСͥåȥϴ˸ʤ
  褦ˤƥͥåȥΥޥͭ IP ɥ쥹ͭ
  ɬפʤʤޤ.)ޤͥåȥӰ򲿤ȤäƤ
  뤫Ĵ٤뤿 IP ѥåȤεϿˤ⤳εǽȤޤ.
  εǽϥۥȤФƤǤϤʤ, 롼ȤưƤ륷ƥ
  ꤷƲ褯狼ʤ N Ʋ

