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Date: Wed, 16 Dec 1998 10:04:12 +0900
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> > NIC1$B$H(BSerial-PPP$B4V$O!"A4%Q%1%C%H$rE>Aw$9$k(B
> > NIC1$B$H(BNIC2$B!"(BSerial-PPP$B$H(BNIC2$B4V$O!"$$$C$5$$E>Aw$7$J$$!J(BNIC2$B$@$1FHN)$7$F$$(B
> > $B$k!K(B
> > $B$H$$$&$3$H$r$7$?$$>l9g!"$I$&$$$&J}K!$,0BA43N<B$G$7$g$&$+!)(B
> 
> ipfw(8)$B$G%U%#%k%?%j%s%0%k!<%k$r=q$/$N$,0lHVJ,$+$j$d$9$$$G$7$g$&!#(B
> $B2>$K(B
> NIC1 : 192.168.1.1/24
> NIC2 : 192.168.2.1/24
> ppp : 192.168.3.1/24
> $B$H$9$k$H(B

$B$?$a$7$F$_$^$7$?!#(B
$B?9K\$5$s$K$$$?$@$$$?%"%I%P%$%9$H$O!"$A$g$C$H0c$C$F!"(B

allow ip from 192.168.2.1 to 192.168.2.0/24
allow ip from 192.168.2.0/24 to 192.168.2.1
deny ip from 192.168.2.0/24 to any
deny ip from any to 192.168.2.0/24
allow ip from any to any

$B$H$7$F!"$&$^$/L\E*$NF0:n$r$7$^$7$?!#(B
$B!J(Bdeny$B$N9T$K$b(Bip$B$,I,MW$G$7$?!K(B

$B$G!";W$C$?$3$H!#(B
$B!!!!(B1,NIC1$BB&$K$V$i2<$,$C$F$$$kB>$N%[%9%H$N%G%U%)%k%H(B
$B!!!!!!%k!<%H$r(BNIC1$B$N%"%I%l%9$K$7$J$$$H$@$a!#(B
$B!!!!(B2.(iij-)ppp$B$r;H$&$J$i!"(BNIC1$B$N%M%C%H%o!<%/%"%I%l%9$K(B
$B!!!!!!(Bppp$B$N%"%I%l%9$r3d$jEv$F$i$l$k$+$i!"(Bipfw$B$r;H$&I,MW(B
$B!!!!!!$O$J$$!#(B

$B$H$/$K!"(B1.$B$O!":#$K$J$C$F;W$($PEv$?$jA0$G$9$,!"<B83Cf$O!"(B
$B!V(Bping$B$N%Q%1%C%H$,!"!J=P$F$$$C$F$$$k$h$&$J$N$K!KJV$C$F$3$J$$!)!)!W(B
$B$H!"!)!)!)>uBV$G$7$?!#(B

$B$*$+$2$5$^$GM-0U5A$J<B83$,$G$-$^$7$?!#(B
$B$"$j$,$H$&$4$6$$$^$7$?!#(B

$B!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!$R$m$R$H(B
