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To: FreeBSD-net-jp@jp.freebsd.org
From: Hitoshi Kamata <hitoshi.kamata@fujixerox.co.jp>
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$BIY;N%<%m%C%/%9$N3yED$H?=$7$^$9!#(B
$B<!$N9=@.$G!"%U%!%$%"!<%&%)!<%k5!!J(BFreebsd$B!K$H(BPC(Windows9x/NT)$B$H$N(B
$BDL?.$,$G$-$J$$$J$j:$$C$F$*$j$^$9!#(B

$B8=>]!K(B
$B!&30B&MQ$N(BNIC$B$+$i(BPrivete$B%"%I%l%9(B192.168.0.2$B$N(Barp$B%j%/%(%9%H$,Mh$k!J$*$=$i$/!K(B
$B!&(B/var/log/messages$B$K0J2<%a%C%;!<%8$,>e$,$k(B
   /kernel: arp: 192.168.0.2 moved
         from  ($B@5$7$$(BMAC$B%"%I%l%9(B) to$B!JIT@5$N(BMAC$B%"%I%l%9!K(B
$B!&$3$N;~$N!"(Barp -a$B$N8+$k$H3N$+$K!"0J2<$NMM$KIT@5$N(BMAC$B%"%I%l%9$KCV$-49$o$C$F$$$k!#(B
  $B%[%9%HL>(B(192.168.0.2) at $BIT@5$N(BMAC$B%"%I%l%9(B (permanent)
$B!&$3$N0Y!"=EJ#$,$*$-$?(BPC$B!J(B192.168.0.2$B!K$,(BMAC$B%"%I%l%9$,F~$lBX$o$C$?0Y!"(B
 firewall$B5!$HDL?.$G$-$J$/$J$k!#(B

$B9=@.!K(B
  $B%U%!%$%"!<%&%)!<%k$N30B&(B                     
  $B%0%m!<%P%k%"%I%l%9(B202.aa.bb.cc               
      |
      |($B30B&MQ(BNIC-Outside)
  +-------------------------+
  | firewall(Freebsd2.2.7R) |ipfw$BMxMQ(B
  +-------------------------+
      |($BFbB&MQ(BNIC-Inside)
      |
  $B%U%!%$%"!<%&%)!<%k$NFbB&(B
  $B%W%i%$%Y!<%H%"%I%l%9(B192.168.0.1
      |
      +--------------+------------+
      |              |            |
      PC             PC           PC
 (192.168.0.2) (192.168.0.3) ...(192.168.0.n)

$B<ALd!K(B
$B30B&$N(BARP$B$KBP$7$F$N%"%/%;%9@)8B$9$kJ}K!$O$"$k$N$G$7$g$&$+!)(B
$B$"$k$$$O!"$3$N8=>]$r2sHr$9$kJ}K!$O$"$k$N$G$7$g$&$+!)(B

$B2sHr:v$4B8CN$G$7$?$i65$($FD:$1$l$P9,$$$G$9!#(B
$B$h$m$7$/$*4j$$$7$^$9!#(B
==
Hitoshi Kamata($B3yEDEy(B)
E-mail:hitoshi.kamata@fujixerox.co.jp


