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Date: Wed, 26 Aug 1998 17:33:45 +0900
From: Yoshiyuki Sato <ysato@tsb.or.jp>
To: FreeBSD-users-jp@jp.freebsd.org
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$B:4F#$H?=$7$^$9!#(B

FreeBSD$B$KD>@\4X78$J$$OCBj$G?=$7Lu$J$$$N$G$9$,!"0J2<$N7o$K$D$$$F!"(B
$B2?$+!"$3$&$7$?;v$,$"$k!"$3$N@_Dj$G$&$^$/$$$/$HJ9$$$?$3$H$,$"$k!"(B
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$B65$($F$$$?$@$1$l$P$H;W$$$^$9!#(B
---------------------------------

$B%M%C%H%o!<%/>e$G!"2<5-$N$h$&$J;v$r9T$&<jCJ$K$D$$$FD4$Y$F$$$^$9!#(B

$B!J35MW!K(B

$B!!2q<RFbIt(BLAN$B$r%$%s%?!<%M%C%H$X@\B3$7!"FbIt$H%P%j%d%;%0%a%s%H(B
$B!!4V$K(BFireWall$B$J$I$r@_CV$9$k!#(B
$B!!%P%j%d%;%0%a%s%H$X@_CV$9$k%^%7%s!J(BFireWall,sendmail,DNS...$B!K(B
$B!!$KBP$7$F!"2?$i$+$NIT@5$J%"%/%;%9$,$"$C$?>l9g!"4IM}<T08$K!"(B
$B!!%a!<%k(B/$B%]%1%Y%k$J$I$X%a%C%;!<%8$rAw$k$h$&$K$7$F$"$k!#(B
$B!!$3$N%a%C%;!<%8$r<u$1<h$C$?4IM}<T$O!"2?$i$+$N1s3VA`:n$J$I$K(B
$B!!$h$j!"%$%s%?!<%M%C%H$H$N@\B3$rO@M}E*$K@ZCG$G$-$k$h$&$K$7$?$$!#(B

$B!J%M%C%H%o!<%/9=@.!K(B

           Internet(OCN)
               |
               |
       ----------------
       | Cisco Router |
       ----------------                   UNIX
               |            ------------------
               |            | sendmail / DNS |
               |   UNIX     ------------------
       ----------------             |               DMZ
       |   FireWall   |-----------------------------------
       ----------------
               |
               |
       ----------------
       |    Router    |
       ----------------
               |
               |
            $BFbIt(BLAN
            
            
  $B"((BCisco Router/FireWall$B$G$O!"4pK\E*$K!"(BHTTP/SMTP/FTP/DNS 
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  $B!!$^$;$s!#(B

$B!J@ZCGJ}K!!K(B
$B!!%$%s%?!<%M%C%H$H$N@\B3$r@Z$j$?$$$N$G!"(BInternet--FireWall
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___

$B:4F#A19T(B ( ysato@tsb.or.jp )
