From owner-FreeBSD-net-jp@jp.freebsd.org  Fri May 25 18:24:22 2001
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From: "jun" <fwgf7460@mb.infoweb.ne.jp>
To: <FreeBSD-net-jp@jp.FreeBSD.org>
Date: Fri, 25 May 2001 18:24:10 +0900
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Subject: [FreeBSD-net-jp 3116] Firewall =?ISO-2022-JP?B?GyRCJE4bKEI=?=
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$B$O$8$a$^$7$F!#(B
 FreeBSD$B$K$O$^$C$F;(;oEy$r;29M$K?'!9$H;n$7$F$*$j$^$9!#(B
 $B@lMQ@~$G%W%m%P%$%@!<$N%[%9%F%#%s%0%5!<%S%9$r<u$1$F$*$j%a!<%k%"%I%l%9$r#1#0(B
$B#0(B
 ID$B$N7@Ls$r(B
 $B$7$F$$$^$9!#(B
 $BJLES8D?ML>$N%"%I%l%9@_Dj$r;n$7$?$$$H9M$($F$$$^$9!#(B
 $B$D$-$^$7$F$O!"(BFreeBSD$B#3!%#5!%#1$^$?$O(BFreeBSD$B#4!%#2$K$F(Bsendmail$B$r;H$C$F(B
 Firewall$B$NFbB&$G%a!<%k%5!<%P!<$r$?$F$i$l$k$G$7$g$&$+!)(B

 $B9=@.?^$O<!$N$H$*$j$G$9!#(B

 LAN$B9=@.?^(B

 $B!!!!(B      Provider ------- The Internet
     $B!!!!(B     |
   $B!!!!(B +-----+-----+(aaa.bbb.ccc.ddd)
 $B!!!!(B   |prov-sever $B!!!!(B|
    $B!!!!(B+-----+-----+(aaa.bbb.ccc.eee)
        $B!!!!(B  |
    $B!!(B +------+-----+<N/W:aaa.bbb.ccc.fff/27>
       |Ether Switch$B!!(B|
    $B!!(B +------+-----+
              |
       $B!!!!(B($B@lMQ@~(B)$B!!(BN/W:172.16.190.0/24 $B!!!!!!!!!!!!(B
          $B!!!!(B|$B!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!(B
    $B!!!!(B+-----+-----+(172.16.190.1) $B!!(B
     $B!!(B | Router$B!!!!(B $B#B(B |
        +-----+-----+(172.16.1.190)
        $B!!!!(B  |
   $B!!!!(B ------+-----------------------<N/W:172.16.1.0/24>
       $B!!!!(B   |(172.16.1.18)$B!!!!(B      $B!!(B
       $B!!(B +------------+
       $B!!(B | mail      $B!!!!!!!!(B |
       $B!!(B +------------+

 $B#D#N#S$O!"%W%m%P%$%@B&$K@_Dj$7$F$b$i$C$F$*$j%m!<%+%kB&$K$OB8:_$7$^$;$s!#(B

$B:,K\E*$J$3$H$,M}2r$G$-$F$$$J$$$H;W$$$^$9$,!"$*65$(4j$($l$PM-Fq$$$G$9!#(B

$B0J>e!!$I$J$?$+$*65$(4j$$$^$9!#(B


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