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Subject: [FreeBSD-users-jp 52155] [Q] IPSec
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$B1sF#$H?=$7$^$9!#(B

$B$3$N4V$O$$$m$$$m$H$*65$($$$?$@$-$"$j$,$H$&$4$6$$$^$7$?!#(B
$B$^$@!"3JF.$7$F$*$j$^$9!#(B^^;
$B7k2L$,=P$?$i%5%^%j!<$7$?$$$H;W$$$^$9!#(B

$B$H$3$m$G!"$^$?$^$?<ALd$G$9!#(B
$B$J$s$+!":n6H$NESCf$G2#$d$j$,B?$/$F0l$D$N$3$H$r=8Cf$7$F(B
$B=PMh$^$;$s!#!J>P!K(B

Subject $B$K$b=q$-$^$7$?$,!"(BIPSec $B$K$D$$$F$G$9!#(B
$B8=:_(B router $B$rDL$7$F(B internet $B$K7R$,$C$F$$$k#2$D$N(B LAN
$B$,$"$j$^$9!#$3$l$r(B VPN $B$7$?$$$N$G!"(BPPP over TCP/IP $B$r(B
$B;H$C$F@\B3$7$F$$$^$9!#(B
$B$G!":#EYJL$J5rE@$r@\B3$9$k$N$G$9$,!"<B$O(B PPP over TCP/IP
$B$G@\B3$9$k$N$O;_$a$?$$$H;W$C$F$$$k$N$G$9!#(B
$BM}M3$O4JC1$G!"JL$K(B VPN $B$N$?$a$K$"$k5!G=$8$c$J$$$7!"Bh0l(B
$B%;%-%e%j%F%#$,!#!#!#(B
$B$H$$$&$3$H$G$J$s$H$+(B IPSec $B$r;H$($J$$$+$J$H;W$C$F$^$9!#(B
PPTP $B$b9M$($^$7$?$,!"(BM$ $B$O7y$$$@$7!"%;%-%e%"%l%Y%k$b$"$s(B
$B$^$j9b$/$J$$!J!)!K$i$7$$$N$G!":NMQ$7$?$/$J$$$G$9!#(B
# $BBh0l(B FreeBSD $B$G(B PPTP $B$N<B8=J}K!$,J,$+$j$^$;$s!#(B^^;

$B$5$F!"$H$$$&$3$H$G(B IPSec $B$r:NMQ$7$?$$$o$1$G$9$,!"(BIPng $B$O(B
$BA4$/$N%7%m%&%H!#(B
$B$^$:!"2?$+$i$O$8$a$?$i$$$$$N$G$7$g$&$+!)(B
$B$H$j$"$($:!"0J2<$N$3$H$O$d$i$J$1$l$P$J$i$J$$$H;W$C$F$$$^$9!#(B

$B!&(BFreeBSD 4.x $B$N%$%s%9%H!<%k(B
$B!&(BIPv6 $B$N5/F0(B

$B$5$F!"$"$H2?$r$9$l$P$$$$$N$G$7$g$&$+!)(B
$B$C$F$$$&$+(B IPv6 over IPv4 $B$C$F$$$C$?$$2?$,$I$&$J$C$F$k$s(B
$B$G$7$g$&!)0l@87|L?(B IPng $B$NK\$rFI$s$G$^$9$,!"$$$^$@$A$s$W(B
$B$s$+$s$W$s$G$9!#(B(?_?)

$B$h$m$7$/$465<x$/$@$5$$!#(Bm(_ _)m
