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From: Ken Makimura <macky@octopath.co.jp>
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Date: Mon, 20 Nov 2006 18:09:43 +0900
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Subject: [FreeBSD-net-jp 4206] Re: 1 =?ISO-2022-JP?B?GyRCJEQkThsoQg==?=
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On Mon, 20 Nov 2006 15:15:17 +0900, daisaito@lares.dti.ne.jp wrote:
 |>  ipfw add fwd 192.168.1.1 udp from 192.168.1.11 53 to any
 |>  ipfw add fwd 192.168.1.1 tcp from 192.168.1.11 53 to any
 |>      :
 |>  ipfw add fwd 192.168.1.2 udp from 192.168.1.12 53 to any
 |>  ipfw add fwd 192.168.1.2 tcp from 192.168.1.12 53 to any
 |
 |$B$?$V$s!";d$N4*0c$$$@$H;W$&$s$G$9$,!"0l1~3NG'$7$?$$$N$G!"=q$-$^$9!#(B

$B$9$_$^$;$s!"@bL@$,0l$DH4$1$F$$$^$7$?!#(Brouter1,router2$B$G(Bport 53$B$@$1$r(B

  (router1) a.b.c.d:53 <--> 192.168.1.10:53
  (router2) w.x.y.z:53 <--> 192.168.1.10:53
  $B"($I$A$i$bF1$8(BIP$B%"%I%l%9(B

$B$H$$$&$U$&$K(Bstatic nat$B$5$;$F$$$k$N$@$H;W$C$F$$$^$9$,!"$=$l$r(B

  (router1) a.b.c.d:53 <--> 192.168.1.11:53
  (router2) w.x.y.z:53 <--> 192.168.1.12:53
  $B"(%k!<%?Kh(B(ISP$BKh(B)$B$KBP1~$9$k(BIP$B%"%I%l%9$rJQ$($k(B

$B$H$7$^$9!#$3$l$G(Bserver$B!V$X!WFO$/(BIP$B%Q%1%C%H$K$D$$$F$O(BISP$B$N6hJL$,IU$/(B
$B$h$&$K$J$k$N$G!"(Bserver$B!V$+$i!W$NJV$j%Q%1%C%H$rF1$8(Brouter$B$KEO$9$?$a$K(B

  ... from 192.168.1.11($B!a(BIPS1$BMQ$N(BIP$B%"%I%l%9(B) 53 ...
  ... from 192.168.1.12($B!a(BIPS2$BMQ$N(BIP$B%"%I%l%9(B) 53 ...

$B$H=q$/$o$1$G$9!#(B

 |ipfw$B$N%k!<%k$K=q$/(Bfrom $B%"%I%l%9$H$$$&$N$O$$$o$f$k%Q%1%C%H$NAw?.85(B
 |$B$G$O$J$$$N$+$J!)$H;W$$$^$7$?!#$D$^$j!"(BISP[12]$B$N8~$3$&B&$+$iMh$?(B
 |$B%Q%1%C%H$N(Bfrom$B%"%I%l%9$H$$$&$N$O(B192.168.1.11|192.168.1.12$B$G$O$J$/!"(B
 |$BK\Ev$N(Bsrc$B%"%I%l%9$8$c$J$$$N$+$J$H!#4*0c$$$@$C$?$i$4$a$s$J$5$$!#(B

$B>e=R$N$h$&$K!"(B"ipfw fwd"$B$9$k$N$O<u?.;~$G$O$J$/H/?.;~$G$9$N$G!"(Bsource
address$B$O(Bserver$B<+?H$N(BIP$B%"%I%l%9(B($B$N$&$A$N0l$D(B)$B$K$J$j$^$9!#(B

-- 
 -O-O-     $BKRB<(B $B82(B      $B3t<02q<R%*%/%H%Q%9(B
   -     Ken Makimura <macky@octopath.co.jp>
