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From: nyan <nekohaha@qd6.so-net.ne.jp>
To: FreeBSD-net-jp@jp.FreeBSD.org
In-Reply-To: <20031014134929.15678.qmail@web501.mail.yahoo.co.jp>
References: <20031014192831.4DD2.NEKOHAHA@qd6.so-net.ne.jp> <20031014134929.15678.qmail@web501.mail.yahoo.co.jp>
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Date: Tue, 14 Oct 2003 23:40:42 +0900
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Subject: [FreeBSD-net-jp 3997] Re: LAN =?ISO-2022-JP?B?GyRCRmJJdBsoQg==?=
 =?ISO-2022-JP?B?GyRCJE4lLyVpJSQlIiVzJUgkKyRpGyhC?= PING
 =?ISO-2022-JP?B?GyRCJCxETCRpJEokJBsoQg==?= 
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On Tue, 14 Oct 2003 22:49:29 +0900
$BNkLZ(B $B3X(B <gakugakuman@yahoo.co.jp> wrote:

> $B$8$c$s$/$M$3$O$OMM$"$j$,$H$&$4$6$$$^$9!#(B
> $BAaB.(B
> /sbin/ipfw add allow icmp from localnet to any
> $B$H9T$C$?$H$3$m(BBSD4.7relese$B$G$O2<5-$N$h$&$KI=<((B
> $B$5$l$F$7$^$$$^$7$?!#(B
> ipfw:hostname ``localnet'' unknow
> 
> > $B:G6a$O!"(Bicmp$B<u$1IU$1$J$$(BISP$B$N(BDNS$B%5!<%P!<$bB?$$$N$G(B
> > $BH=CG$7$:$i$$$G$9$M$'!#(B
> ISP$B$N(BDNS$B@_Dj$K$h$C$F$b0c$&$s$G$9$M!#(B
> $BJY6/$K$J$j$^$7$?!#(B
> $BJV?.$$$?$@$-$^$7$F$"$j$,$H$&$4$6$$$^$9!#(B
> 
> 
> 
> > 
> > > $B$I$J$?$+65$($F$/$@$5$$!#(B
> > >
> > LAN$BFbIt$N%/%i%$%"%s%H$+$i30B&$X$N(BPING$B$,DL$i$J$$$N$G(B
> > > $BDL$k$h$&$K$7$?$$$G$9!#(B
> > > $BIT2D2r$J$3$H$H$7$F$O%2!<%H%&%'%$C<Kv$+$i$N30It$X$N(B
> > > PING$B$ODL$j$^$9$,!"%/%i%$%"%s%H$+$i30It$X$N(BPING$B$,(B
> > > $BDL$i$J$$E@$G$9!#(BOS$B$O(BFreeBSD 4.7 Relese$B$G$9!#(B
> > > $B$A$J$_$K%/%i%$%"%s%H(B(Host
> > "A""C")$B$N(Bwindows$B%^%7!<%s$G(B
> > > $B30B&$K$"$k%[!<%`%Z!<%8$N1\MwEy$OLdBj$J$/$G$-$^$9!#(B
> > > 
> > > $B!{%M%C%H%o!<%/9=@.(B
> > >      Inter net
> > >     _____|____
> > >    |ADSL MODEM|
> > >    |__________|
> > >          |
> > >   _______|tun0___ FreeBSD 4.7
> > >  |    HOST "G"   |(Gateway,nameserver,
> > >  |________rl0____|nat,samba,ipfw,apache)
> > >          | 192.168.1.1
> > >   _______|_______
> > >  |      HUB      |
> > >  |_______________|
> > >     |    |    |   ____________________
> > >     |    |    |__|Host "A" 192.168.1.3| win
> > >     |    |        ____________________
> > >     |    |_______|Host "B" 192.168.1.4| FreeBSD
> > 4.7
> > >     |             ____________________  (os only)
> > >     |____________|Host "C" 192.168.1.5| win
> > > 
> > >
> >
> $B8=>](B==========================================================================
> > >   PING OK
> > >     HOST "A" "B" "C" <-> HOST "A" "B" "C"
> > >     HOST "A" "B" "C" <-> HOST "G"
> > >     HOST "G" <-> Internet
> > >   PING NG
> > >     HOST "A" "B" "C" <-> Internet
> > >     $BNc$($P(B
> > >       Host "C" $B$+$i(BPING$B$r9T$C$?$H$-$NI=<(!#(B
> > >        Pinging www.yahoo.co.jp [211.14.15.5] with
> > 32 bytes
> > > of data:
> > >        Request timed out.
> > >        Request timed out.
> > >        Request timed out.
> > >        Request timed out.
> > >        Ping statistics for 211.14.15.5:
> > >          Packets: Sent = 4, Received = 0, Lost = 4
> > (100%
> > > loss),
> > > 
> > >
> >
> $B@_Dj(B=========================================================================
> > >   /etc/rc.conf
> > >     gateway_enable="YES"
> > > 
> > >   HOST "G"$B$G(Bipfw list
> > >     00100 allow log icmp from any to any
> > > 
> > >   HOST "G"$B$G(Bnetstat $BI=<(7k2L(B
> > >   $B!J$3$N$H$-(BHOST
> > > "A"$B$ON)$A$"$,$C$F$$$J$+$C$?$N$G(B192.168.1.3
> > > $B$NI=<($O$"$j$^$;$s!#!K(B
> > >     Routing tables
> > >     Internet:
> > >     Destination   Gateway           Flags Refs 
> > Use Netif
> > > Expire
> > >     default       61.207.**.***     UGSc    2  755
> >  tun0
> > >     61.207.**.*** 219.160.**.***    UH      2    0
> >  tun0
> > >     127.0.0.1     127.0.0.1         UH      1   65
> >   lo0
> > >     192.168.1     link#2            UC      4    0
> >   rl0
> > >     192.168.1.1   00:0a:79:27:e0:38 UHLW    0   13
> >   lo0
> > >     192.168.1.4   00:09:41:1e:58:1f UHLW    1   47
> >   rl0  
> > >  714
> > >     192.168.1.5   00:08:a1:1e:12:7e UHLW    4 2718
> >   rl0  
> > >  734
> > >     192.168.1.255 ff:ff:ff:ff:ff:ff UHLWb   2   63
> >   rl0
> > > 
> > >   HOST "G"$B$G(Bifconfig $BI=<(7k2L(B
> > >   dc0:
> > flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST>
> > > mtu 1500
> > > 	inet6 fe80::203:6dff:fe19:aaca%dc0 prefixlen 64
> > scopeid
> > > 0x1 
> > > 	ether 00:03:6d:19:aa:ca
> > > 	media: Ethernet autoselect (100baseTX
> > <full-duplex>)
> > > 	status: active
> > >   rl0:
> > flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST>
> > > mtu 1500
> > > 	inet 192.168.1.1 netmask 0xffffff00 broadcast
> > > 192.168.1.255
> > > 	inet6 fe80::20a:79ff:fe27:e038%rl0 prefixlen 64
> > scopeid
> > > 0x2 
> > > 	ether 00:0a:79:27:e0:38
> > > 	media: Ethernet autoselect (10baseT/UTP)
> > > 	status: active
> > >   lp0: flags=8810<POINTOPOINT,SIMPLEX,MULTICAST>
> > mtu 1500
> > >   lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST>
> > mtu 16384
> > > 	inet6 ::1 prefixlen 128 
> > > 	inet6 fe80::1%lo0 prefixlen 64 scopeid 0x4 
> > > 	inet 127.0.0.1 netmask 0xff000000 
> > >   ppp0: flags=8010<POINTOPOINT,MULTICAST> mtu 1500
> > >   sl0: flags=c010<POINTOPOINT,LINK2,MULTICAST> mtu
> > 552
> > >   faith0: flags=8002<BROADCAST,MULTICAST> mtu 1500
> > >   tun0:
> > flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> mtu
> > > 1454
> > > 	inet 219.160.**.*** --> 61.207.**.*** netmask
> > 0xffffffff 
> > > 	Opened by PID 55
> > > 
> > >
> > $BD9$/$J$j$^$7$?$,$465<x$/$@$5$$$^$9$h$&$*4j$$$$$?$7$^$9(B
> $B!#(B
> > > 
> > > 
> > > __________________________________________________
> > > Do You Yahoo!?
> > > Yahoo! BB is Broadband by Yahoo!
> > > http://bb.yahoo.co.jp/
> > $B$8$c$s$/$M$3$O$O!"$H$$$$$^$9(B
> > 
> > ipfw$B$N@_Dj$G!"(B
> > allow icmp from localnet to any
> > $B$rDI2C$9$l$P$$$$$N$G$O!)(B
> > 
> > $B$=$l$,(BOK$B$J$i$P!"(BDNS$B$H$$$&;v$b9M$($i$l$^$9$,!#(B
> > 
> > $B:G6a$O!"(Bicmp$B<u$1IU$1$J$$(BISP$B$N(BDNS$B%5!<%P!<$bB?$$$N$G(B
> > $BH=CG$7$:$i$$$G$9$M$'!#(B
> > 
> > -- 
> > nyan <nekohaha@qd6.so-net.ne.jp>
> > 
> 
> 
> __________________________________________________
> Do You Yahoo!?
> Yahoo! BB is Broadband by Yahoo!
> http://bb.yahoo.co.jp/
$B$3$3$G$$$&!"(Blocalnet,
$B$N0UL#$O!"=j0b!P(B$iif}$B$N0UL#9g$$$G$9(B

$B6qBNE*$K$O!"(Ballow icmp from 192.168.1.0/24 to any
$B$H$J$k$G$7$g$&$+!)(B

NAT$B$G$d$C$F$k$H$J$k$H!"$A$c$s$H(Bdivert$B$5$l$F$$$k$N$+!)(B
static route$B$G$J$/(BDHCP$B$J$i$P!"$^$?JL$N;v$b9M$($i$l$^$9$,!#(B
$B!!(B
$B;d8+$G$9$,!"(BGateway$B%^%7%s$K$O!"$"$l$3$l%$%s%9%H!<%k$;$:$K(B
ipfw,NAT,DNS$BDxEY$K$7$?$[$&$,!"LdBjH/@8;~$N@Z$jJ,$1(B
$B0BA4@-$+$i$$$C$F$$$$$H$*$b$$$^$9!#(B

$B$=$l0J30$O!"JL%^%7%s$G2TF0$9$k$+!)(B
$B8!F$$5$l$F$b$$$$$+$b$7$l$^$;$s$M!#(B

-- 
nyan <nekohaha@qd6.so-net.ne.jp>

