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<H2><A NAME="s5">5.</A> <A HREF="Wireless-HOWTO.html#toc5">$B%o%$%d%l%9%M%C%H%o!<%/9=C[$N35MW(B</A></H2>
<H2><A NAME="ss5.1">5.1</A> <A HREF="Wireless-HOWTO.html#toc5.1">$B4pACE*$JCJ3,(B</A>
</H2>
<P>$B0lC6I,MW$J$b$N$rF~<j$7$F!"I,MW$J%3%s%Q%$%k$r$9$Y$F<B9T$7$F$7$^$C$?$i!"(B
$B4pACE*$J%o%$%d%l%9$N@_DjCJ3,$X?J$_$^$7$g$&!#(B</P>
<P>
<OL>
<LI>$B%+!<%M%k$NDc%l%Y%k$N@_Dj(B -
$B%+!<%M%k$NDc%l%Y%k$N@_Dj$r9T$$!"(BLinux $B$N%+!<%M%k$,%o%$%d%l%9%+!<%I$rG'<1$G$-$k$h$&$K$7$^$7$g$&!#(B
($BDc%l%Y%k$H$O!"Nc$($P(B I/O Port $B$H$+!"3d$j9~$_(B(IRQ)$B$H$+!"(BDMA $B$J$I$G$9(B)
$B$D$^$j%+!<%M%k$+$i!"!V%o%$%d%l%9%+!<%I$r@5$7$/G'<1$7$F@_Dj$7$^$7$?!W$H$$$&I=<($,(B
$B=P$k$h$&$K@_Dj$7$J$1$l$P$J$j$^$;$s!#(B</LI>
<LI>$B%G!<%?%j%s%/AX$N@_Dj(B -
$B3F%o%$%d%l%9%+!<%I$K$O!"%G!<%?%j%s%/AX$K$*$1$kI8=`CM$r@_Dj$9$k$?$a$N%D!<%k$,Ds6!$5$l$F$$$^$9!#(B
$BNc$($P(B Proxim Symphony $B$N>l9g!"(B"rl2cfg" $B$H8F$P$l$k%D!<%k$G$9!#(B
$B$3$l$O(B PCMCIA $B%+!<%I$G$N@_Dj$H$OJL$G!"$=$A$i$O(B PCMCIA $B@_Dj%U%!%$%k$G9T$$$^$9!#(B
$B<+J,$N;}$DA4$F$N%o%$%d%l%9%+!<%I$KBP$7$F!"8_$$$K8r?.$G$-$k$h$&$K$9$k$?$a$K!"(B
$B<sHx0l4S$7$F@_Dj$9$kI,MW$,$"$j$^$9!#(B</LI>
<LI>IP $BAX$N@_Dj(B - $B$3$3$^$G$/$l$P!"(Bifconfig $B$d(B route $B$N%3%^%s%I$r;H$$!"(BIP $B4X78$N@_Dj$,$G$-$^$9!#(B</LI>
<LI>$B@-G=$r==FsJ,$KH/4x$5$;$D$D!"6%9g$rHr$1$k%3%D(B -
$B$3$NCJ3,$^$G$/$l$P!"$"$J$?$N%o%$%d%l%9%M%C%H%o!<%/$O!"4pK\E*$JF0:n$O$7$F$$$^$9!#(B
$B$3$3$K2C$($F!"FC<l$J5!G=$N@_Dj$r$9$kI,MW$,$"$j$^$9!#(B
$BNc$($P(B proxy-arp $B$H$+!"(Bicmp echo redirect$B!"%V%j%C%8!"%A%c%s%M%kJQ99$J$I$G$9!#(B
$B$3$l$i$N@_Dj$r;\$9;v$G!"%M%C%H%o!<%/$r:GE,2=$7!"(B
$B860x5fL@$,:$Fq$G!"%P%s%II}$r69$/$7$F$7$^$&$h$&$J6%9g$r2sHr$7$^$9!#(B</LI>
</OL>
</P>
<P>$BCm0UE@(B - $B%9%F%C%W(B 1 2 3 $B$O!"(BISO/OSI $BI8=`%b%G%k$N%l%Y%k(B 1 2 3 $B$KAjEv$7$^$9!#(B
$B0lJ}%9%F%C%W(B 4 $B$O!"%M%C%H%^%9%/$,(B 255.255.255.255 $B$H$$$&>u67;~$KH/@8$9$k(B
$BLdBj$r2r7h$9$k$?$a$KIU$12C$($?$b$N$G$9!#(B
$B<B:](B 32bit $B$N%M%C%H%^%9%/$O!"(BISO/OSI $BI8=`$r<i$C$F$$$J$$$N$G!"(B
$B%M%C%H%o!<%/$KBP$7$F!"%V%m!<%I%-%c%9%H$H%^%7%s$N(B IP $B$KF1$8%"%I%l%9$r;H$$!"(B
$B%M%C%H%o!<%/%"%I%l%9$,B8:_$7$J$$$h$&$J3d$jEv$F$r6/@)$9$k$3$H$K$J$j$^$9!#(B</P>
<P>$B$3$N8+J}$K$OHcH=$r$9$k?M$,$$$k$G$7$g$&!#$7$+$7!"$b$7$"$J$?$,(B
$B%o%$%d%l%9%M%C%H%o!<%/$r@_Dj$9$k$?$a$KI8=`(B ISO/OSI $B%b%G%k$r;H$&$N$G$"$l$P!"(B
$B%5%V%M%C%H$N$?$a$KB?$/$N%"%I%l%9$,L5BL$K$J$j$^$9$7(B($B8D!9$N%5%V%M%C%H$K$*$$$F!"(B2 $B$D$N(B IP $B%J%s%P!<(B($B%M%C%H%o!<%/$H%V%m!<%I%-%c%9%H(B)$B$r<N$F$F$7$^$&$N$G(B)$B!"$^$?=@Fp$J(B IP $B3d$jEv$F(B($BCOM}E*$J>r7o$J$I$GH/@8$9$k(B) $B$,$G$-$J$/$J$j$^$9!#(B
$B$3$l$K$D$$$F$O!"(B
<A HREF="Wireless-HOWTO-10.html#appendix a">$BIUO?(B A</A>$B$G>\$7$/2r@b$7$^$9!#(B</P>
<P>$B@h$N%9%F%C%W(B 2 $B$O!"%1!<%V%k@\B3$N%M%C%H%o!<%/@_Dj$G$O=P$F$3$J$$;vJA$G$9!#(B
$B$H$$$&$N$O!"%1!<%V%k@\B3$N%+!<%I$G$O!"$3$NIt0L$NFCJL$J@_Dj$O$J$$$+$i$G$9!#(B</P>
<H2><A NAME="Low Level Kernel Config"></A> <A NAME="ss5.2">5.2</A> <A HREF="Wireless-HOWTO.html#toc5.2">$BDc%l%Y%k$N%+!<%M%k@_Dj(B</A>
</H2>
<P>Linux $B%+!<%M%k$K8B$i$:!"%O!<%I%&%'%"$rG'<1$5$;$k;v$O(B PC $B$r4IM}$9$k>e$G$$$D$bF,(B
$B$NDK$$LdBj$G$9!#(B </P>
<P>$B%o%$%d%l%9%+!<%I$O!"$?$$$F$$(B PCMCIA $B7A<0$J$N$G!">/$7$P$+$jJ#;($G$9!#(B
$B$^$:Bh0l$K!"%+!<%M%k$+$i(B PCMCIA $B%"%@%W%?!<$rG'<1$G$-$k$h$&$K$9$kI,MW$,$"$j$^$9!#(B
$B$=$l$,$G$-$l$P!"%o%$%d%l%9%+!<%IMQ$NFCDj%I%i%$%P$N%$%s%9%H!<%k$KD)@o$G$-$^$9!#(B</P>
<P>
<PRE>
PCMCIA $B$N@_Dj$K$*$$$F!"0J2<$N;v$r$7$J$1$l$P$J$j$^$;$s(B -
</PRE>
</P>
<P>
<OL>
<LI>linux $B$N%+!<%M%k%=!<%9$r%$%s%9%H!<%k$7$^$9!#%=!<%9$O!"(B
<A HREF="http://www.kernel.org">http://www.kernel.org</A>
$B$+$i<hF@$7$F(B /usr/src/linux $B$KE83+$7$^$7$g$&!#(B
($BE83+$NJ}K!$,$o$+$i$J$$?M$O(B tar $B$H(B gzip $B$N;H$$J}$r$_$F$/$@$5$$(B)<BR>
$BLuCm(B - $B%+!<%M%k%=!<%9$O!"$G$-$k$@$19qFb$N%_%i!<%5!<%P!<$+$iF~<j$9$k$h$&$K$7$^$7$g$&!#(B</LI>
<LI>linux pcmcia $B$N%=!<%9$r%$%s%9%H!<%k$7$^$7$g$&!#%=!<%9$O!"(B
<A HREF="ftp://projects.sourceforge.net/pub/pcmcia-cs">ftp://projects.sourceforge.net/pub/pcmcia-cs</A>$B$+$i<hF@$7$F(B /usr/src/pcmcia $B$KE83+$7$F$/$@$5$$!#(B
($BE83+J}K!$,$o$+$i$J$$?M$O(B tar $B$H(B gzip $B$N%^%K%e%"%k$r$_$F$/$@$5$$(B)<BR>
$BLuCm(B - $B%+!<%M%k$N%=!<%9$HF1MM!"$G$-$k$@$19qFb$N%_%i!<%5!<%P!<$+$iF~<j$7$^$7$g$&!#(B</LI>
<LI>$B%+!<%M%k$N@_Dj$r9T$$!"<+J,MQ$N%+!<%M%k$r%3%s%Q%$%k$7$^$9!#(B
$B$3$N:n6H$G$O!"(Blinux $B%G%#%l%/%H%j(B (/usr/src/linux) $BFb$K$"$k(B README $B%U%!%$%k$rFI$s$G$/$@$5$$!#(B<BR>
$BLuCm(B - JF $B%W%m%8%'%/%H$G$O!"$3$N%U%!%$%k72$bF|K\8l$X$NK]Lu$r?J$a$F$$$^$9!#(B
$B>\$7$/$O(B
<A HREF="http://www.linux.or.jp/JF/">JF</A>$B$r8+$F$/$@$5$$!#(B</LI>
<LI>PCMCIA $B%=!<%9$N@_Dj$H:F%3%s%Q%$%k$r9T$$$^$9!#(B
$B%G%#%l%/%H%j(B /usr/src/pcmcia $B$G(B configure, make $B%3%^%s%I$r;H$$$^$9!#(B
$B;vA0$K!"I,MW$J%I%i%$%P$,$"$k$+3NG'$7$F$/$@$5$$!#(B
$BL5$$>l9g$K$O!"%I%i%$%P$N@bL@$K=>$$%$%s%9%H!<%k$9$kI,MW$,$"$j$^$9!#(B
($B$?$$$F$$(B pcmcia $B$N%G%#%l%/%H%j$G(B "tar zxvf driver.tgz" $B$r<B9T$9$l$P(B OK $B$G$9(B)
$B=`Hw$,@0$C$?8e!"%3%s%Q%$%k$9$k$?$a(B "make all" $B$r<B9T$7$^$9!#(B
$B%3%s%Q%$%k$,=*$o$C$?8e!"(B"make install" $B$r<B9T$7!"%$%s%9%H!<%k$7$^$7$g$&!#(B</LI>
<LI>$B%$%s%9%H!<%k$r<B9T$7$?8e!"M-MQ$J@_Dj%U%!%$%k72$O(B /etc/pcmcia $B0J2<$K$"$j$^$9!#(B</LI>
</OL>
</P>
<P>
<PRE>
PCMCIA $B$G$OL5$$>l9g(B -
</PRE>
</P>
<P>
<OL>
<LI>$B$b$7I,MW$J%I%i%$%P$,(B linux $B$N%=!<%9$K4^$^$l$F$$$k$N$G$"$l$P(B($B$=$s$J;v$O(B
99% $BL5$$$H;W$$$^$9$,(B)$B!"$=$l$r%G%#%l%/%H%j$K%$%s%9%H!<%k$7!"(B
$B%3%s%Q%$%k$9$kI,MW$,$"$j$^$9!#(B</LI>
</OL>
</P>
<P>$B$3$NCJ3,$K$^$G?J$a$P!"FI$_9~$`I,MW$N$"$k%b%8%e!<%k$NL>A0$,$o$+$C$F$$$k$O$:$G$9!#(B
PCMCIA $B$N@_Dj$O!"(BPCMCIA $B$N%G!<%b%s$r5/F0$9$l$P$h$$$@$1$G$9!#(B
(RedHat $B$J$i$P!$(B"/etc/rc.d/init.d/pcmcia start")$B!"(B
$BB>$N%G%#%9%H%j%S%e!<%7%g%s$N>l9g$O!"(B"modprobe module_name options" $B$G$9!#(B
$B$3$3$N%*%W%7%g%s$N9`L\$G!"%o%$%d%l%9%I%i%$%P$,;H$&!"(Bioport, irq, data-link $B$NCM(B
$B$rM?$($^$9!#(B(
<A HREF="#Data-link_level_settingip">5.3 $B>O(B</A>$B;2>H(B)
$B$H$K$+$/!"%O!<%I%&%'%"$,%I%i%$%P$+$i@5$7$/G'<1$5$l$F$$$k$+$I$&$+3NG'$9$k$K$O!"0J2<$N$h$&$K$7$^$9(B - </P>
<P>
<OL>
<LI>"tail /var/log/messages" : $B$3$N%3%^%s%I$G!"(Bsyslog $B$,EG$-=P$9>pJs$r8+$k;v$,$G$-$^$9!#(B</LI>
<LI>"dmesg" : $B$3$N%3%^%s%I$G!"$h$j>\$7$$>pJs$rF@$k;v$,$G$-$^$9!#(B</LI>
<LI>/proc $B%G%#%l%/%H%j(B : $B$3$N%G%#%l%/%H%j0J2<$N%U%!%$%k72$+$i!"(Bioport, $B%G%P%$%9(B,
irq $B$d%I%i%$%P$N>pJs$,$o$+$j$^$9!#(B</LI>
</OL>
</P>
<H2><A NAME="Data-link_level_settingip"></A> <A NAME="ss5.3">5.3</A> <A HREF="Wireless-HOWTO.html#toc5.3">$B%G!<%?%j%s%/AX$N@_Dj(B</A>
</H2>
<P>
<PRE>
$B$=$l$C$F2?(B ?
</PRE>
</P>
<P>$B%1!<%V%k$G7R$,$l$?$3$l$^$G$N%M%C%H%o!<%/$G$O!"5!4o4V$r%1!<%V%k$G7R$$$G$7(B
$B$^$($P!"%G!<%?%j%s%/AX$N@_Dj$r$7$J$/$H$b!"(BTCP/IP $B%Q%i%a!<%?$r@_Dj$9$k$3$H$,$G$-$^$7$?!#(B</P>
<P>$B%o%$%d%l%9%M%C%H%o!<%/4D6-$G$O!"$3$l$H$OBP>HE*$K!"%G!<%?%j%s%/AX$N@_Dj$,I,MW$G$9!#Nc$($P!"(B</P>
<P>
<OL>
<LI>$B;d$,@\B3$9$k%o%$%d%l%9%M%C%H%o!<%/$O!"$I$N<oN`(B($B%"%I%[%C%/$+%$%s%U%i%9%H%i%/%A%c$+(B)$B$G$7$g$&(B?</LI>
<LI>$B$I$N%A%c%s%M%k$r;H$o$J$1$l$P$J$i$J$$$N(B?</LI>
<LI>$B$3$l$+$i@\B3$9$k%M%C%H%o!<%/$N%5%V%M%C%H(B( BSSID )$B$O2?(B?
$B$^$?(B ESS ID $B$O(B? </LI>
<LI>$B;d$NDL?.$O!"(Bencryption $B%"%k%4%j%:%`$N$h$&$J$b$N$G<i$i$l$F$$$k$N$G$7$g$&$+(B?
$B$b$7<i$i$l$F$$$k$J$i$P!"(BLength $B%-!<$O2?(B? </LI>
</OL>
</P>
<P>$B$3$N$h$&$K!"D4@0$,I,MW$J@_Dj9`L\$O$?$/$5$s$"$j$^$9!#(B
$BM}M3$O!"%o%$%d%l%9%M%C%H%o!<%/$N4pK\@_7W$K$h$k$b$N$G$9!#(B
$BC/$+6a$/$K$$$k?M$,!"%"%s%F%J$r$3$A$i$K8~$1$F!"@5$7$$(B TCP/IP $B$N@_Dj$r$9$k$@$1(B
$B$G!"$"$J$?$N%Q%1%C%H$r8+$k$3$H$b!"%5!<%S%9$r;H$&$3$H$b=PMh$^$9!#(B</P>
<P>$B2C$($F%o%$%d%l%94D6-$N2<$G$O!"8_$$$K:.?.$r5/$3$7$=$&$JB?$/$N%o%$%d%l%9%5(B
$B%V%M%C%H$,!"F1;~$KB8:_$7$F$$$k2DG=@-$,$"$j$^$9!#(B</P>
<P>$B=>$C$F!"2<5-$N$h$&$J@_Dj9`L\$,$"$j$^$9(B - </P>
<P>
<OL>
<LI>load-time $B%b%8%e!<%k$N%*%W%7%g%s@_Dj(B - $BNc$($P(B "modprobe ray_cs essid='LINUX'"</LI>
<LI>run-time $B%I%i%$%P$N%f!<%F%#%j%F%#$N;HMQ(B - $BNc$($P(B "rl2cfg eth1 master" </LI>
</OL>
</P>
<H2><A NAME="ip_setting"></A> <A NAME="ss5.4">5.4</A> <A HREF="Wireless-HOWTO.html#toc5.4">IP $B$N@_Dj(B</A>
</H2>
<P>$B$3$l$O$"$J$?$,D>LL$7$J$1$l$P$J$i$J$$!";0HVL\$NLdBj$G$9!#(B
$B$3$NLdBj$O!"%o%$%d%l%9%M%C%H%o!<%/$,$5$i$KBg$-$/$J$C$F$-$?$H$-$K!"82:_2=$7$F$/$k$G$7$g$&!#(B</P>
<P>
<PRE>
$B%o%$%d%l%9(B IP $B%M%C%H%o!<%/$O!"Ii2Y$r$+$1$F;H$o$J$$$N$J$i!"$"$J$?$NIiC4$K$b$J$i$J$$$3$H$r3P$($F$*$$$F$/$@$5$$!#(B
</PRE>
</P>
<H3>$B4JC1$J9=@.Nc(B</H3>
<P>
<PRE>
$BA4$F$N%[%9%H$O!"8_$$$,8+$($^$9(B
A - - - - - C
$B!@(B /
| $B!@(B / |
/
| / $B!@(B |
/ $B!@(B
B - - - - - D
</PRE>
</P>
<P>$B$3$N$h$&$J9=@.$O$H$F$bC1=c$GJ,$+$j$d$9$/!"$^$?FC<l$J@_Dj(B( IP $B%l%Y%k$N@_Dj$J$I(B)
$B$rI,MW$H$7$^$;$s!#(B $B$=$l$>$l$N%[%9%H$X$N(B IP $B%"%I%l%9$H!"@5$7$$HFMQ%M%C%H%^%9%/$r(B
$B3d$jEv$F$l$P$h$$$@$1$G$9!#(B</P>
<H3>$B$A$g$C$HJ#;($J9=@.Nc(B</H3>
<P>
<PRE>
$B%[%9%H(B A $B$O(B $BD>@\%[%9%H(B B $B$,8+$($^$;$s(B
A <- - - -
$BDL?.!@(B |
$BIT2DG=!@(B C
$B!@(B |
B <- - - -
</PRE>
</P>
<P>A $B$H(B B $B$O!"(BC $B$rDL$7$F$N$_8r?.$,2DG=$G$9!#(B </P>
<P>$B$b$7%M%C%H%o!<%/$,%$%s%U%i%9%H%i%/%A%c!&%b!<%I$G9=@.$5$l$F$$$F!"(BC $B$,%"%/%;(B
$B%9%]%$%s%H$G$"$k$J$i$P!"JL$KLdBj$O$"$j$^$;$s!#(B
$B%"%I%[%C%/!&%b!<%I$N>l9g!"(B "master" $B%[%9%H$,9=@.$7$?(B BSS $B$KBP$7!"B>$N%[%9%H$O@\B3$9$k;v$,$G$-$^$9!#(B
($B!V(B"master" $B%[%9%H!W$H$$$&8@$$J}$,@5<0$J$b$N$GL5$$;v$O!"==J,>5CN$7$F$$$^$9$1$I$M(B!)</P>
<P>$B$3$l$G(B IP $B%l%Y%k$N40A4$JAj8_@\B3$,<B8=$G$-$F$$$^$9!#(B
$B$D$^$j(B A $B$H(B B $B$O!"(BC $B$,;}$DF1$8%$%s%?!<%U%'!<%9$r;H$C$FDL?.$r$*$3$J$$$^$9!#(B
$B$b$7(B A $B$+$i(B B $B$K(B ping $B$rBG$H$&$H$9$k$H!"(BC $B$+$i$?$/$5$s$N(B ICMP REDIRECT $B%Q%1%C%H$r<u?.$7$^$9!#(B
$B$3$NM}M3$O!"(B C $B$O(B A $B$KBP$7$F!"(B"$B%Q%1%C%H$NL\E*CO$,!"MW5a$,Mh$?=j$HF1$8%M%C%H(B
$B%o!<%/Fb$K$"$k$h(B"$B$H$$$&;v$rEA$($F$$$k$+$i$G$9!#(B</P>
<P>$B2r7hJ}K!(B - $B$3$l$rM^;_$9$k$?$a!"%3%^%s%I%i%$%s$+$i(B
"echo 0 > /proc/sys/net/ipv4/conf/ethx/send_redirects"
$B$HF~NO$7$F$_$^$7$g$&!#(B
($B$3$3$N(B ethx $B$O!"(BA $B$H(B B $B$K8~$1$?(B C $B>e$N%$%s%?!<%U%'!<%9$G$9(B)</P>
<P>$BB>$NLdBj(B -
A $B$H(B C $B$K$O!"$I$s$J%M%C%H%^%9%/CM$r3d$j?6$C$?$i$h$$$N$G$7$g$&(B?
$B2>$K(B A $B$KBP$7$F!"(BA $B$H(B C $B$r4^$s$@%M%C%H%^%9%/$r@_Dj$9$k$H!"%M%C%H%o!<%/$O$&$^$/F0$+$J$$$G$7$g$&!#(B
$B$H$$$&$N$O!"(BA $B$O%2!<%H%&%'%$(B($B$3$N>l9g(B C )$B$r;H$&;v$J$/!"(B
$B9T$-@h$NCN$i$J$$(B MAC $B%"%I%l%9$H6&$K(B ARP $BMW5a$r=P$7$F$$$k$+$i$G$9!#(B</P>
<P>$B$"$J$?$O(B proxy arp $B$NMxMQ$r;W$$$D$/$+$b$7$l$^$;$s!#(B
$B$7$+$7!"(Bproxy arp $B$+$i9T$-@h$rCN$k;v$,$G$-$k$N$O!"Aw$j@h$,MW5a@h$N%$%s%?!<%U%'!<%9(B
$B$H$OJL$N%$%s%?!<%U%'!<%9$K$"$k;~$@$1$J$N$G!":#2s$N%1!<%9$K$O3:Ev$7$^$;$s(B!!</P>
<P>$B$3$NMM$J>l9g!"$H$C$F$b>.$5$J%M%C%H%^%9%/(B
(Win9x $B$J$i$P(B 255.255.255.254 $B$r!"(BWinNT $B$J$i$P!"$9$/$J$/$H$b(B 255.255.255.248)
$B$r@_Dj$9$kI,MW$,$"$j$^$9!#(B
$B$^$?%[%9%H(B A $B$H(B C $B$,F1$8%M%C%H%"%I%l%9$r;}$?$J$$$h$&$K!"3N<B$K@_Dj$9$kI,MW$,$"$j$^$9!#(B</P>
<P>
<PRE>
$BNc(B :
</PRE>
</P>
<P>
<OL>
<LI>IP($B%[%9%H(B A) = x.y.z.2/31, IP($B%[%9%H(B B) = x.y.z.3/31
$B$3$N@_Dj$G$O!"$&$^$/F0$-$^$;$s!#(B
$B$H$$$&$N$O!"(B
A $B$O%M%C%H%o!<%/$KBP$7$F(B B $B$N;v$r?R$M$^$9$,(B (ARP $B$NMW5a(B)$B!"(B
A $B$H(B B $B$,F1$8%$%s%?!<%U%'!<%9$K7R$,$C$F$$$k$K$b4X$o$i$:(B($B=>$C$F(B proxy arp $B$OL5$7(B)$B!"(B
C $B$OMW5a$K1~Ez$7$F$/$l$^$;$s!#(B </LI>
<LI>IP($B%[%9%H(B A) = x.y.z.1/31, IP($B%[%9%H(B B) = x.y.z.2/31
$B$3$N@_Dj$OF0:n$7$^$9!#(B
$B$J$<$J$i!"(BA $B$O(B C $B$KBP$7$F(B B $B$N;v$rJ9$/$+$i$G$9!#(B
( B $B$KBP$7$F!"(BC $B$N(B MAC $B%"%I%l%9$H0l=o$K$7$FMW5a$r=P$9$N$G(B)</LI>
</OL>
</P>
<P>$B0lHLE*$K%7%9%F%`$O!"%M%C%H%^%9%/CM(B 255.255.255.254 $B$H$$$&>uBV2<$K$*$$$F!"(B
$B:G=*%S%C%H$@$1$,0c$&(B 2 $B$D$N(B IP $B%"%I%l%9$rM?$($k$3$H$GF0$-$^$9!%(B</P>
<P>$B$3$l$i$9$Y$F$O!"(BTCP/IP $B$r6/@)$7$F$$$^$9!#(B
$B$7$+$7$3$l$O!"9b$$%l%Y%k$N=@Fp@-$rF@$k$?$a$K$O!"M#0l$NJ}K!$G$9!#(B</P>
<P>$BCm0UE@(B - $B$b$7%"%/%;%9%]%$%s%H$rMxMQ$7$F$$$k$N$G$"$l$P!"(B
($B%M%C%H%o!<%/$O%$%s%U%i%9%H%i%/%A%c!&%b!<%I(B)
$B$9$Y$F$NLdBj$O%G!<%?%j%s%/AX$G2r7h$5$l$F$7$^$&$N$G!"$3$N$h$&$JLdBj$KD>LL$9$k;v$O$"$j$^$;$s!#(B
($B$[$H$s$I$N%"%/%;%9%]%$%s%H$O!"%V%j%C%8$H$7$F5!G=$7$^$9$+$i(B...)
$B$7$+$7%"%/%;%9%]%$%s%H$O9b2A$G$9!#(B($B$@$$$?$$(B 1000 US$ $B$+!"$=$l0J>e(B)
$B$G$9$+$i!"(B2$B!"(B3 $B8D$N%o%$%d%l%9%+!<%IDxEY$G$"$l$P!"E>AwMQ$K(B Pent133MHz,32MByte $B$N(B RAM $B$r@Q$s$@DxEY$N(B PC $B$r;H$&$H!"(B
$B$1$C$3$&7P:QE*$G$9!#(B</P>
<H3>$B%$%s%?!<%M%C%H$X$N%"%/%;%9(B</H3>
<P>
<PRE>
A - - - - - C - - $B%$%s%?!<%M%C%H(B
$B!@(B /
| $B!@(B / |
/
| / $B!@(B |
/ $B!@(B
B - - - - - D
</PRE>
</P>
<P>$B$$$/$D$+$N>u67$,A[Dj$5$l$^$9(B</P>
<P>
<OL>
<LI>C $B$@$1$,M#0l!"8x$N(B IP $B%"%I%l%9$r;}$C$F$$$^$9!#(B
$B$3$N%o%$%d%l%9%M%C%H%o!<%/$rF0$+$9$?$a$K$O!"%W%i%$%Y!<%H$J(B IP $B%"%I%l%9(B($BNc$($P(B 192.168.x.y)$B$r(B
$B@_Dj$7!"(BC $B>e$K$*$$$FE>Aw$d%^%9%+%l!<%I$r9T$&$@$1$G$h$$$G$9!#(B
A, B, D $B$O!"(BC $B$rI8=`$N%2!<%H%&%'%$$H$7$^$9!#(B</LI>
<LI>$B%$%s%?!<%M%C%H$+$i%"%/%;%92DG=$J!"0lHLE*$J%M%C%H%^%9%/$r3d$jEv$F$i$l$F$*$j!"(B
C $B$O$3$N%M%C%H%o!<%/$+$i%$%s%?!<%M%C%H$X@\B3$9$k$?$a$N!"I8=`%2!<%H%&%'%$$G$9!#(B
$BI,MW$J$N$O!"(BC $B>e$GE>Aw5!G=$rM-8z$K$9$k;v$H!"(BA, B, D $B$KBP$7$F(B C $B$rI8=`%2!<%H%&%'(B
$B%$$H$9$k$@$1$G$9!#(B</LI>
<LI>$B%$%s%?!<%M%C%H$+$i%"%/%;%92DG=$J!"0lHLE*$J%M%C%H%^%9%/$r3d$jEv$F$i$l$F$*$j!"(B
$B2C$($F(B C $B$O!"%$%s%?!<%M%C%H$X%"%/%;%9$9$k$?$a$NI8=`%2!<%H%&%'%$$G$O$J$$>l9g$r9M$($^$9!#(B
$B$3$N>l9gFs$D$NJ}K!$,$"$j$^$9!#(B
$B0l$D$O!"%M%C%H%o!<%/$KBP$7$F!"(BC $B$rI8=`%2!<%H%&%'%$$H$7$F;H$&$h$&$K9=C[$9$k$3$H$G$9!#(B
$BBP>NE*$K(B C $B$KBP$7$F$O!"%$%s%?!<%M%C%H$K%"%/%;%9$9$k$?$a$K!"I8=`%2!<%H%&%'%$$r;X$9$h$&$K(B
$B;E8~$1$J$1$l$P$J$j$^$;$s!#(B
$B$3$NJ}K!$N$+$o$j$K$G$-$k;v$O!"(BC $B$KBP$7$F(B proxy arp $B5!G=$rM-8z$K$9$k;v$G$9!#(B
(echo 1 > /proc/sys/net/ipv4/conf/ethx/proxy_arp $B$3$3$N(B ethx $B$O!"I8=`%2!<%H%&%'%$(B
$B$K7R$,$C$F$$$k%$%s%?!<%U%'!<%9$G$9(B)
$B$=$7$F(B C $B>e$NI8=`%2!<%H%&%'%$$r!"%$%s%?!<%M%C%H$X%"%/%;%9$9$k(B
$BI8=`%2!<%H%&%'%$$r;X$9$h$&$K@_Dj$7$^$9!#(B
Proxy arp $B$O(B TCP/IP $B$KBP$7$F6/0z$K?6$kIq$$$^$9$,!"$&$^$/5!G=$7$^$9!#(B</LI>
</OL>
</P>
<H3>$B%1!<%V%k$G7R$,$C$?%M%C%H%o!<%/$H%o%$%d%l%9%M%C%H%o!<%/$,:.:_$7$F$$$k>l9g(B</H3>
<P>
<PRE>
$B%$%s%?!<%M%C%H(B
$B!@(B
$B!@(B E
$B!@(B /
$B!@(B / $B%o%$%d%l%9(B
A - - - - - C - - F
$B!@(B / $B!@(B
| $B!@(B / | $B!@(B
$B%1!<%V%k(B / G
| / $B!@(B |
/ $B!@(B
B - - - - - D
</PRE>
</P>
<P>$B$3$3$N(B C $B$O!"Fs$D$N%M%C%H%o!<%/$NCf7Q$r$7$F$$$^$9!#(B
$B1&B&$O%o%$%d%l%9%M%C%H%o!<%/$G!":8B&$O%1!<%V%k@\B3$N%M%C%H%o!<%/$G$9!#(B</P>
<P>$B2C$($F!"%$%s%?!<%M%C%H$X$N%"%/%;%9$b2DG=$G$9!#(B
$B$D$^$j(B C $B$K$O!"(B3 $BKg$N%M%C%H%o!<%/%+!<%I$,Ek:\$5$l$F$$$k$N$G$9!#(B</P>
<P>$B%[%9%H$KBP$7$F!"$I$s$J(B IP $B%"%I%l%9$r3d$j?6$C$?$i$h$$$N$G$7$g$&(B?
$B$3$l$K$OFs$D$N2r7h:v$,$"$j$^$9!#(B </P>
<P>
<OL>
<LI>$B%M%C%H%o!<%/$rFs$D$N%5%V%M%C%H$KJ,3d$9$kJ}K!(B -
$BNc$($P(B 192.168.1.0/24 $B$H(B 192.168.2.0/24$B!!$N$h$&$KJ,3d$7$^$9!#(B
$B$3$N2r7hJ}$O<j$C<h$jAa$$J}K!$G$9$,!"$b$7%$%s%?!<%M%C%H(B IP $B%"%I%l%9$r;H$C$F$$$k$H!"(B
$BB?$/$N(B IP $B$,L5BL$K$J$k$N$G3HD%@-$K7g$1$^$9!#(B</LI>
<LI>$BFs$DL\$N2r7h:v$O!"(BC $B>e$NFs$D$N%$%s%?!<%U%'!<%9$KBP$7$F(B Proxy Arp $B5!G=$rM-8z$K$9$k;v$G$9!#(B
$B%M%C%H%o!<%/%Q%i%a!<%?!J%M%C%H%"%I%l%9$d!"%M%C%H%^%9%/(B)$B$O!"%o%$%d%l%9$G$b(B
$B%1!<%V%k@\B3%M%C%H%o!<%/$G$b0l=o$G$9!#$7$+$7!"(B
proxy-arp $B$rM-8z$K$9$k$3$H$G!"$I$N(B IP $B$,%1!<%V%k@\B3%M%C%H%o!<%/>e$N$b$N$+!"$"$k$$$O(B
$B%o%$%d%l%9%M%C%H%o!<%/$J$N$+!"A*Br$G$-$k$h$&$K$J$j$^$9!#(B</LI>
</OL>
</P>
<P>
<PRE>
2 $B$DL\$N2r7h:v$K$D$$$F8!F$$7$F$_$^$7$g$&(B
</PRE>
</P>
<P>$BNc(B - $B%$%s%?!<%M%C%H$N8x$J%5%V%M%C%H(B x.y.z.0/24 $B$r;}$C$F$$$k>l9g$rA[Dj$7$^$9(B</P>
<P>
<PRE>
$B3F%$%s%?!<%U%'!<%9$N@_Dj$O0J2<$N$H$*$j(B
</PRE>
</P>
<P>
<OL>
<LI>ifconfig eth0 x.y.z.C netmask 255.255.255.255 ($B%1!<%V%k@\B3%M%C%H%o!<%/(B)</LI>
<LI>ifconfig eth1 x.y.z.C netmask 255.255.255.255 ($B%o%$%d%l%9%M%C%H%o!<%/(B) </LI>
<LI>ifconfig eth2 x.y.z.C netmask 255.255.255.255 ($B%$%s%?!<%M%C%H$X(B) </LI>
</OL>
</P>
<P>
<PRE>
eth2 $B>e$K$*$1$k@EE*$JG[Aw(B
</PRE>
</P>
<P>
<OL>
<LI>route add IPGW dev eth2 </LI>
<LI>route add default gw IPGW </LI>
</OL>
</P>
<P>$B$3$NG[Aw7PO);XDj$G$O!"A4$F$N%$%s%?!<%M%C%H$+$i$N%"%I%l%9;XDjMW5a$KBP$7$F!"(B
$B<+J,$NI8=`%2!<%H%&%'%$$r;XDj$7$^$9!#(B
$B$D$^$j$*5$$E$-$N$h$&$K!":G=i$K(B Linux $B$KBP$7$F2?=h$K%k!<%?!<$,$"$k$N$+65$($kI,MW$,$"$j!"(B
$B$=$&$9$l$P!"I8=`$NMW5a$,$=$3$rDL2a$9$k$h$&$K$G$-$^$9!#(B</P>
<P>
<PRE>
eth0 $B>e$K$*$1$k@EE*$JG[Aw(B
</PRE>
</P>
<P>
<OL>
<LI>route add x.y.z.A dev eth0 </LI>
<LI>route add x.y.z.B dev eth0 </LI>
<LI>route add x.y.z.D dev eth0 </LI>
</OL>
</P>
<P>$B%[%9%H(B A B D $B$O!"%1!<%V%k@\B3$N%M%C%H%o!<%/>e$K$"$j$^$9!#(B</P>
<P>
<PRE>
eth1 $B>e$K$*$1$k@EE*$JG[Aw(B
</PRE>
</P>
<P>
<OL>
<LI>route add x.y.z.E dev eth1 </LI>
<LI>route add x.y.z.F dev eth1 </LI>
<LI>route add x.y.z.G dev eth1 </LI>
</OL>
</P>
<P>$B%[%9%H(B E F G $B$O!"%o%$%d%l%9%M%C%H%o!<%/$K7R$,$C$F$$$^$9!#(B</P>
<P>$BCmL\$9$Y$-E@$O!"=@Fp@-$,BgJQ9b$$;v$G$9!#(B
$B$7$+$7!"$=$l$>$l$N%[%9%HKh$K<jF0$G@_Dj$7$J$1$l$P$J$j$^$;$s$,!#(B</P>
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