From owner-freebsd-questions Mon Nov 30 22:08:18 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id WAA18324 for freebsd-questions-outgoing; Mon, 30 Nov 1998 22:08:18 -0800 (PST) (envelope-from owner-freebsd-questions@FreeBSD.ORG) Received: from dns1.briang.org (c879583-a.ptbrg1.sfba.home.com [24.1.88.78]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id WAA18319 for ; Mon, 30 Nov 1998 22:08:16 -0800 (PST) (envelope-from brian@briang.org) Received: from brian-desktop (desktop.briang.org [192.168.0.41]) by dns1.briang.org (8.9.1/8.9.1) with SMTP id XAA06927 for ; Mon, 30 Nov 1998 23:14:55 -0800 (PST) Message-ID: <004501be1cf1$71112e40$2900a8c0@brian-desktop.briang.org> Reply-To: "Briang" From: "Briang" To: "FreeBSD" Subject: IPFW and NATD Date: Mon, 30 Nov 1998 22:11:31 -0800 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0042_01BE1CAE.62AACAC0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 4.72.3155.0 X-MimeOLE: Produced By Microsoft MimeOLE V4.72.3155.0 Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG This is a multi-part message in MIME format. ------=_NextPart_000_0042_01BE1CAE.62AACAC0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable I have DNS and NATD running with IPFW -> FXP0 -> Internet / 24.1.8x.xxx = FXP1-> Private / 192.168.0.1. Well this is what I dont understand if I try to ping www.briang.org it = replys fine but if I try to open=20 www.briang.org inside netscape it times out saying it cant find the = website...Hmmmm So I added this line to the rc.firewall file=20 """ $fwcmd add divert 6668 all from 192.168.0.0/24 to any via fxp1 """ and now I can open the website but snmp service tells me that is cant no = longer find the interface for 24.1.8x.xxx. Hmmm c:\tracert 24.0.0.27 1 <10 ms <10 ms <10 ms rtr1.gw.briang.org [192.168.0.1] 2 42 ms 20 ms 20 ms 24.1.88.1 3 18 ms 10 ms 10 ms r1-fe2-0-0-100bt.frmt1.sfba.home.net = [24.1.80.1] Next shouldn't I see it going through FXP1 and then to FXP0 out to the = net ?? =20 cat /etc/rc.firewall $fwcmd -f flush $fwcmd add divert 6668 all from any to any via fxp0 $fwcmd add 100 pass all from any to any via lo0 $fwcmd add 200 deny all from any to 127.0.0.0/8 $fwcmd add deny all from 192.168.0.0/24 to any out via fxp0 =20 $fwcmd add deny log tcp from 24.0.0.0/8 to 24.1.8x.xxx/32 1-65000=20 $fwcmd add deny log udp from 24.0.0.0/8 to 24.1.8x.xxx/32 1-65000=20 $fwcmd add deny log all from 198.247.0.0/16 to any in via fxp0 $fwcmd add 65000 pass all from any to any --> ipfw -a l 00100 42 5811 divert 6668 ip from any to any via fxp0 --->>> I took the other Divert line out for right now.. 00100 0 0 allow ip from any to any via lo0 00200 0 0 deny ip from any to 127.0.0.0/8 00300 0 0 deny ip from 192.168.0.0/24 to any out xmit = fxp0 07400 0 0 deny log tcp from 24.0.0.0/8 to 24.1.8x.xxx = 1-65000 07500 0 0 deny log udp from 24.0.0.0/8 to 24.1.8x.xxx = 1-65000 07600 0 0 deny log ip from 198.247.0.0/16 to any in = recv fxp0 65000 491 49928 allow ip from any to any 65535 14 1076 deny ip from any to any Thanks -Brian ------=_NextPart_000_0042_01BE1CAE.62AACAC0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

I have DNS and NATD running with IPFW = -> FXP0=20 -> Internet / 24.1.8x.xxx FXP1-> Private / = 192.168.0.1.

Well this is what I dont understand if = I try to=20 ping www.briang.org it replys fine = but if I=20 try to open

www.briang.org inside = netscape it times=20 out saying it cant find the website...Hmmmm

So I added this line to the rc.firewall file

""" $fwcmd add divert 6668 all from = 192.168.0.0/24 to=20 any via fxp1 """

and now I can open the website but snmp service tells me that is = cant no=20 longer find the interface for 24.1.8x.xxx. Hmmm

c:\tracert 24.0.0.27

1   <10 ms   <10=20 ms   <10 ms rtr1.gw.briang.org=20 [192.168.0.1]
2    42 ms    20=20 ms    20 ms 24.1.88.1
3    = 18=20 ms    10 ms    10 ms =20 r1-fe2-0-0-100bt.frmt1.sfba.home.net [24.1.80.1]

Next shouldn't I see it going through FXP1 and then to FXP0 out to = the net=20 ??

cat /etc/rc.firewall

$fwcmd -f flush
$fwcmd add divert 6668 all from any to any via=20 fxp0
$fwcmd add 100 pass all from any to any via lo0
$fwcmd add = 200 deny=20 all from any to 127.0.0.0/8
$fwcmd add deny all from 192.168.0.0/24 = to any=20 out via fxp0
$fwcmd add deny log tcp from 24.0.0.0/8 to = 24.1.8x.xxx/32=20 1-65000
$fwcmd add deny log udp from 24.0.0.0/8 to 24.1.8x.xxx/32 = 1-65000=20
$fwcmd add deny log all from 198.247.0.0/16 to any in via = fxp0
$fwcmd add=20 65000 pass all from any to any

--> ipfw -a = l

00100 =20 42 5811 divert 6668 ip from any to = any via=20 fxp0

--->>> I took the other = Divert line out=20 for right now..

00100         =20 0          0 allow ip from = any to=20 any via = lo0
00200         =20 0          0 deny ip from = any to=20 127.0.0.0/8
00300         = ;=20 0          0 deny ip from=20 192.168.0.0/24 to any out xmit=20 fxp0
07400         =20 0          0 deny log tcp = from=20 24.0.0.0/8 to 24.1.8x.xxx=20 1-65000
07500         =20 0          0 deny log udp = from=20 24.0.0.0/8 to 24.1.8x.xxx=20 1-65000
07600         =20 0          0 deny log ip = from=20 198.247.0.0/16 to any in recv=20 fxp0
65000       =20 491      49928 allow ip from any to=20 any
65535        =20 14       1076 deny ip from any to = any

Thanks

-Brian

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