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Message-Id: <19971116222216O.flathill@shikoku.ne.jp>
Date: Sun, 16 Nov 1997 22:22:16 +0900
From: Seiichirou Hiraoka <flathill@shikoku.ne.jp>
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Subject: [FreeBSD-net-jp 338] Packet Folter(Router or Firewall)
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$BJ?2,$G$9!#(B

$B$3$N(BML$B$KEj9F$9$k$N$O=i$a$F$G$9$,!"59$7$/$*4j$$$7$^$9!#(B

OCN$B$G%M%C%H%o!<%/$r9=C[$9$k;v$K$J$j$^$7$?!#(B
$B$H$j$"$($:0J2<$N$h$&$J9=@.$K$7$?$$$H;W$C$F$$$^$9!#(B
# $B>.NS$5$s$N?^$r;H$o$;$FD:$-$^$7$?!#(B:-)

                       OCN
                        |
                        |
                      Router(IP MATE 1000R) x.x.x.193
       	       	       	|	 x.x.x.192/28
                        |      	 Global Network
                        |
                        |        x.x.x.194
           FireWall(DNS,WWW,SMTP,POP,Proxy)
                        |        192.168.0.2
                       HUB
                        |        192.168.0.0/24
                        |        Local Network
       	       	        |

FireWall$B%^%7%s$N9=@.$O0J2<$NDL$j$G$9!#(B
OS: FreeBSD 2.2.5R
NIC: fxp0 (Local) 192.168.0.2/24
     fxp1 (Global) x.x.x.194/28

$BFbIt$+$i$O!"(BProxy(Squid)$B$r;H$C$F(Bhttp$B$H(Bftp$B$N$_$r5v2D$7$^$9!#(B
$B30It$+$i$O!"(BFireWall$B$G(Bhttp$B$H(Bftp$B$N$_$r5v2D$7$?$$$H9M$($F$$$^$9!#(B
# $B%a!<%k$NG[Aw$OIaDL$K9T$$$?$$$G$9!#(B

$B$3$N$h$&$J;v$r$9$k$N$K!"(Brouter$B$G%U%#%k%?$r$+$1$k$N$,NI$$$G$7$g$&$+!#(B
$B$=$l$H$b!"(BFireWall$B$G(BIPFW$B$r;H$&$N$,NI$$$G$7$g$&$+!#(B
$B$b$7$/$O!"N>J}$G$d$k$Y$-$J$N$G$7$g$&$+!#(B

$B%M%C%H%o!<%/9=C[$N7P83$,$J$$$N$G4VH4$1$J;v$r8@$C$F$$$k$+$b(B
$B$7$l$^$;$s$,!"$I$&$>59$7$/$*4j$$$7$^$9!#(B

              $BJ?2,(B  $B@,0lO/(B  $B0&I2Bg3X9)3XItEE5$EE;R9)3X2J(B
            flathill@shikoku.ne.jp / flathill@mcn.shikoku.ne.jp
      $B!y!z!y(BFreeBSD$B=i?4<T%f!<%6$N$?$a$N%[!<%`%Z!<%83+@_Cf!y!z!y(B
                  $B!z!y!z(BFreeBSD $B%A%c%C%H3+@_Cf!z!y!z(B
                   http://mcn.shikoku.ne.jp/~flathill/
