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Subject: [FreeBSD-net-jp 1780] Re: NAT and interface
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$B2OB<(B@$BF|K\%i%C%I3t<02q<R$H?=$7$^$9!#(B

$B4D6-$K$D$$$F!"2?$b@bL@$7$F$$$^$;$s$G$7$?!#(B

NAT Machine $B$O(B OS $B$O(B FreeBSD 3.2-RELEASE $B$r;HMQ$7$F$$$^$9!#(B
$B=hM}$K$O(B ipnat $B$r;HMQ$7$?$$$H;W$C$F$$$^$9!#(B

> $B2OB<(B@$BF|K\%i%C%I3t<02q<R$H?=$7$^$9!#(B
> 
> $B4pK\E*$J$3$H$G?=$7Lu$J$$$N$G$9$,!"$4AjCL$K>h$C$F$$$?$@$1$J$$$G$7$g$&$+!#(B
> 
> $B$"$k;v>p$+$i!"(B1 $BKg$N(B NIC $B$K(B global address $B$H(B local address $B$r@_Dj$7$F!"(B
> NAT $B$r;HMQ$7$?$$$H;W$C$F$$$k$N$G$9$,!"K\Ev$K$G$-$k$N$G$7$g$&$+!#(B
> 
> $B$D$^$j!"$3$s$J46$8$G$9!#(B
> 
>           +-------+
>           | proxy | xxx.xxx.xxx.1
>           +---+---+
>               |        xxx.xxx.xxx.0 $B$H(B 192.168.1.0 $B$,:.:_$N%M%C%H(B
>   --+---------+----------------------------------------------------
>     |
>   +-+-----------+
>   | NAT Machine | ed0: xxx.xxx.xxx.2, 192.168.1.1
>   +-------------+
> 
> xxx.xxx.xxx.0 $B$O%0%m!<%P%k%"%I%l%9$G$9!#(B
> ed0 $B$K$O(B ip alias $B$G(B 2 $B$D$N(B IP $B%"%I%l%9$r$D$1$F$"$j$^$9!#(B
> $B$3$3$K!"(B192.168.1.10 $B$H$$$&(B IP $B%"%I%l%9$r;}$C$?%^%7%s$r@\B3$7$F!"(Bproxy
> $B7PM3$G%$%s%?!<%M%C%H@\B3$r9T$$$?$$$N$G$9!#(B
> $B$7$+$7!"(B192.168.1.0 $B$N%M%C%H%o!<%/$O1JB3E*$KB8:_$9$k$+$I$&$+$o$+$i$J$$(B
> $B$N$G!"(Broute $B$d(B proxy $B$N@_Dj$r$G$-$k$@$1JQ99$7$?$/$J$$$H;W$C$F$$$^$9!#(B
> # proxy $B$O(B xxx.xxx.xxx.xxx $B0J30$N(B IP $B%"%I%l%9$+$i$N@\B3MW5a$O<u$1IU$1(B
> # $B$J$$@_Dj$K$J$C$F$$$^$9!#(B
> 
> $B$^$?!"=tHL$N;v>p$+$i(B NIC $B$rDI2C$9$k$N$b<jB3$-$,BgJQ$a$s$I$&$G$9!#(B
> $B$=$l$G!"(BNAT $B$G2?$H$+$J$i$J$$$b$N$+$H!"L5$$CN7C$r9J$C$F$$$k$H$3$m$G$9!#(B
> 
> $B2?$H$J$/!"L5M}$=$&$J5$$O$9$k$N$G$9$,!"$b$7!"$G$-$k$H$9$4$/9,$;$K$J$l$k(B
> $B$N$G$9$,!"$$$+$,$G$7$g$&!#(B
