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In-Reply-To: Your message of "Tue, 12 Aug 1997 21:37:43 +0900"
References: <199708121237.VAA02775@nocs3.noc.titech.ac.jp>
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Date: Tue, 12 Aug 1997 23:40:56 +0900
From: MIHIRA "Sanpei" Yoshiro <sanpei@yy.cs.keio.ac.jp>
Reply-To: FreeBSD-net-jp@jp.freebsd.org
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Subject: [FreeBSD-net-jp 60] Re: natd vs IP-fil(ipnat)
Errors-To: owner-FreeBSD-net-jp@jp.freebsd.org
Sender: owner-FreeBSD-net-jp@jp.freebsd.org

>$B$3$$$D$O(B UDP$B$N%j%l!<$,$G$-$=$&$G$9!#JRF;$O4JC1$K<BAu$G$-$^$9$,!"(B($B%"%I(B
>$B%l%9=q$-49$($k$@$1(B)$B!"(BUDP$B$rCV$/$C$F%5!<%P$+$iJV;v$,5"$C$F$/$k>l9g$N(B
>$B5"$j$N%Q%1%C%H$KBP1~$9$k$K$O(B $B5"$j$N%Q%1%C%H$N85!"C/$,30$K(BUDP$B$rAw$C$?$s(B
>$B$@!)(B $B$F$N$r3P$($F$*$+$J$$$H(B $BFbIt$K(B $BAw$l$^$;$s$h$M!#(B
>ip-fil$B$O(B $B$=$l$rC;;~4V3P$($F$*$/$h$&$G$9!#(B
>$B$J$N$G5"$j$N(BUDP$B$,<u$1<h$l$k(B($B$i$7$$(B)

  $B$O$$(B, $B$"$C$F$$$k$H;W$$$^$9(B. ipnat -l $B$H$7$F(B, $B8=:_$N(B private
IP/port <--> public IP/port $B$X$NBP1~%^%C%W$rI=<($5$;$k$H(B time-out $B$9(B
$B$k$^$G$N;~4V$,I=<($5$l$^$9(B.

>$B$G$b(B sanpei$B$N%Z!<%8$G$O(B CU-SeeMe$B$,F0$+$J$$(B $B$H8@$C$F$$$?$J$!!#(B

  CU-SeeMe $B$N%W%m%H%3%k$r>\$7$/CN$i$J$$$N$G$9$,(B, 

	1) CU-SeeMe $B$OAw?.$9$k%Q%1%C%HFbIt$K(B IP $B%"%I%l%9$,@8$G(B
	   $BF~$C$F$$$k$h$&$G$9!D!D(B($B$D$^$j(B CU-SeeMe $B%W%m%0%i%`$,(B
	   $BAw=P$9$k%Q%1%C%H$K<+J,$N(B IP $B%"%I%l%9$r5-=R$7$F$$$k!D!D(B)
	2) $B$=$N%"%I%l%9$O(B private $B%"%I%l%9$G$9(B
	3) $B$=$N%Q%1%C%H$NCf$K4^$^$l$k%"%I%l%9$r(B IP masquerade $B$9$k$H$-$K(B
	   $B=q$-49$($J$$$H$&$^$/(B Reflecter ($B%9%Z%k<+?.L5$$$G$9(B) $B$,(B
	   $B$*JV;v$G$-$J$$$h$&$G$9(B. 

  Linux $BJ}LL$G<BAu$5$l$F$$$k(B IP masquerade $B$K$O(B, CU-SeeMe $BBP1~$J$N$,(B
$B$"$k$h$&$G$9(B. ($B>pJs$O(B Linux $BMQ(B CU-SeeMe $B%W%m%0%i%`(BQSeeMe-0.80a$B$h$j(B)

sanpei
IP_Filter $B$G<BAu$9$l$P$h$$$N$G$9$,!D!D%Q%o!<L5$$$G$9(B($B$3$l$P$C$+$j(B^^;)
