Date: Wed, 13 Dec 2000 04:00:17 -0800 (PST) From: Sean Peck <speck@newsindex.com> To: cjclark@alum.mit.edu Cc: David Raistrick <keen@damoe.wireless-isp.net>, Chris Hill <chris@monochrome.org>, freebsd-questions@FreeBSD.ORG Subject: Re: Configuring Gateway/NAT on Freebsd Message-ID: <Pine.BSF.4.10.10012130329590.10186-100000@www.newsindex.com> In-Reply-To: <20001212231103.H96105@149.211.6.64.reflexcom.com>
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>
> OK, one more time. What _exactly_ are your configs? What _exactly_ is
> and is not working? Saying "you have a machine running natd" and
> giving us the IP is not enough. You ask what natd(8) "flags" to
> use. Well, let's get the ones you are using now. All you really should
> need are the entries to start it and provide the interface or
> address.
here are settings in rc.conf:
natd_enabled="YES"
natd_interface="172.16.0.1" (I have tried this with public ip and with
private ip)
natd_program="/sbin/natd"
natd_flags="-a xxx.xxx.xxx.xxx" (public space address)
gateway_enabled="YES"
in rc.local I have the alias command to force nic in this box to also
listen at 172.16.0.1 as follows
ifconfig xl0 alias 172.16.0.1 netmask 0xffffff00
Network looks like this
ISP
1 Machine, in my network listening as both a public IP and to 172.16.0.1
This is the machine that natd is running on, and I wish to be the gateway
to my network.
other machines behind this all in 172.16.0.x space, with their default
router set to 172.16.0.1 and netmask of 255.255.255.0
ifconfig -a :
xl0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
inet xx.xx.xx.xxx netmask 0xffffff00 broadcast 64.2.61.255
inet 172.16.0.1 netmask 0xffffff00 broadcast 172.16.0.255
ether 00:01:02:34:0b:61
media: 10baseT/UTP <half-duplex>
supported media: 10baseT/UTP <full-duplex> 10baseT/UTP
<half-duplex> 10baseT/UTP
lp0: flags=8810<POINTOPOINT,SIMPLEX,MULTICAST> mtu 1500
tun0: flags=8010<POINTOPOINT,MULTICAST> mtu 1500
sl0: flags=c010<POINTOPOINT,LINK2,MULTICAST> mtu 552
ppp0: flags=8010<POINTOPOINT,MULTICAST> mtu 1500
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
inet 127.0.0.1 netmask 0xff000000
netstat -rn:
Destination Gateway Flags Refs Use Netif
Expire
default 64.2.61.1 UGSc 70 257 xl0
64.2.61/24 link#1 UC 0 0 xl0
64.2.61.1 0:10:67:0:3b:92 UHLW 71 0 xl0
470
127.0.0.1 127.0.0.1 UH 0 578 lo0
172.16/24 link#1 UC 0 0 xl0
ipfw sh
ipfw: getsockopt(IP_FW_GET): Protocol not available
(OBVIOUSLY THIS ISN'T RIGHT... )
grep natd is not showing the process running either...very weird.
> Some more things that will help us, and you, figure this out,
>
> # ifconfig
> # netstat -rn
> # ipfw sh
> # ps aux | grep natd
> Use tcpdump(8) to check where the traffic is going.
>
> --
> Crist J. Clark cjclark@alum.mit.edu
>
>
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