  (ͥåȥѥåȥե륿)
  Netfilter ϡLinux box ̤ȴͥåȥѥåȤ
  ե륿󥰤ùꤹ뤿Υե졼Ǥ

  ѥåȥե륿󥰤κǤŪʻѤϡ󥿡ͥå
  ͥåȥݸեȤơ
  Linux box ư뤳ȤǤΥͥǥݡȤǥ
  ݡȤեΥפ "packet filter (
  åȥե륿)" ȸƤФƤޤϥס
  ʤɤ˴ŤġΥͥåȥѥåȤݤ뤳
  Ǥ뤳Ȥ̣ޤ¾μΥե 1 
  Ĥˡ"proxy-based (ץ١)" ե뤬
  ޤϤǤΩäƤƽΤ
  ǤϡϤ뤫տͥåȥȥեå
  ơѥåȥե륿ˤϷ礱Ƥ٥
  ʥץȥ˴ؤμޤ˥ץ١
  եϡ褯Υ饤Ⱦưץ
  ؤѹ׵ᤷޤץ١Υե
  ϡͥˤ륵ݡȤɬפȤޤ󤬡 Y 
  ȡñ˥ѥåȥե륿Ȱưޤ

  Х IP ɥ쥹ʤޥΥͥå
  Τˡ󥿡ͥåȤ³뤿Υȥ
   Linux box ѤĤʤ顢 Y ٤
   "masquerading (ޥ졼ɵ)" ȸƤФޤ
  ⤷ͥåȥΥԥ塼 1 Ĥ
  ꤿ硢Linux box Υԥ塼Τդ 
  ("masquerade (ޥ졼)") 򤹤뤳ȤǤޤĤޤ
  ȥեåե Linux box Ƥ
  ˸뤿ᡢѥåȤѹäŪȤ볰
  žޤơΥۥȤСLinux 
  box ۤäƥȥեå륳ԥ塼ž
  ޤäơޤưޤˡǤϡ
  ͥåȾΥԥ塼ϳϤ뤳
  ǤƤ⡢ޤ󡣤Ǥ⡢ݡ
  žȸƤФᥫ˥Ѥơޥ졼ɤ줿
  ͥåȥΥФ鸫褦ư
  ȤǽǤޥ졼ɤ NAT (Network Address 
  Translation (ͥåȥɥ쥹Ѵ)) ȸƤФޤ

  ⤦ 1 Ĥ Netfilter ӤϡƩץǡ
  ͥåȥΥޥ󤬳ΥۥȤ³褦Ȥ硢
  Linux box ϽƤ뤳Ȥ桼˵դ뤳Ȥʤ
  ȥեå Linux box Υ륵 (ץ) ž
  뤳ȤǤޤ (ŵŪʤΤϥå󥰥ץ
  )

  netfilter ˤϡΥޥ졼 (ipmasqadm)ѥå
  ե륿 (ipchains)Ʃץ˥ݡž˼
  ͡ʥ⥸塼뤬ޤ"iptables" Υѥå
  ˴ޤޤƤ Documentation/Changes 򻲾ȤƤ

   Y Ĥʤ顢"Fast switching" ˤϳμ¤ N 
  Ƥʤʤ Fast switching  netfilter 
  Хѥ뤫Ǥ

  롼ȤưȤ륫ͥ򥳥ѥ뤹ʤ顢Y 
  ٤Ǥ̾ΥۥȤʤ顢N ޤ褯ʬ
  ʤϡN Ƥ

  <ⶶ>

