Very Computer

by **k3..** » Tue, 09 May 2000 04:00:00

Hello
I have a little problem with dns resolving from my local computer that
is connected via a gateway using natd.

First some info! :)
This is how the computers are connected to each other
Windows2k -(xl0)-> FreeBSD 4-STABLE -(ed1)-> Internet

Windows2k=192.168.1.2
FreeBSD=192.168.1.1

I'm using a cable modem with dynamic IP (It doesn't change until I
reset the modem) through a Ethernet compatible card (device = ed1). The
Windows2k computer is connected with a 3com905b (device = xl0)...

Now to the problem! I've installed natd and its working excellent as a
gateway except one thing, the Windows2k computer cant resolv dynamic IP
adresses (like www.blahblah.com), only clean IP (ex. 1.2.3.4.) - can't
be too specific! :) It IS possible to ping computers outside the local
network with the Windows2k computer.
Thats the problem. I'm not very experienced with FreeBSD and networking
yet so I have no clue what it could be. I would be very glad if someone
could find a solution to my problem.

Here is some config files:
------------------------------------
rc.conf: (snapped)
firewall_enable="YES"
firewall_script="/etc/rc.firewall"
natd_program="/sbin/natd"
natd_enable="YES"
natd_interface="ed1"
natd_flags="-f /etc/rc.natd"
-------------------------------------
rc.firewall:
/sbin/ipwf -f flush
/sbin/ipwf add divert natd all from any to any via ed1
/sbin/ipwf add pass all from any to any
-------------------------------------
rc.natd:
log no
deny_incoming no
use_sockets no
same_ports yes
verbose no
unregistered_only no
dynamic yes
-------------------------------------

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Before you buy.

by **fran** » Tue, 09 May 2000 04:00:00

- Does ping www.ibm.net or something similar work from the FreeBSD box?

- Is your ed1 interface configured before you startup natd?

- I had some similar problems with an ADSL modem setup. Try the following as root:
$ killall natd
$ killall dhclient
$ dhclient ed1
$ natd -d dynamic -n ed1
$ ipfw -f flush
$ ipfw add divert natd all from any to any via ed1
$ ipfw add pass all from any to any

This should configure the interface using dhcp. Startup natd with a configured interface and configure the firewall. I assume you compiled a custom kernel with IP filtering and IP forwarding and BPF support.

The other thing to check is the name server settings on your win2k box. Are you using a DNS server on the FreeBSD box?

Also check the FreeBSD diary web site. There is mention of a similar problem and solution there.

Good luck,

Frank

> Hello
> I have a little problem with dns resolving from my local computer that
> is connected via a gateway using natd.

> First some info! :)
> This is how the computers are connected to each other
> Windows2k -(xl0)-> FreeBSD 4-STABLE -(ed1)-> Internet

> Windows2k=192.168.1.2
> FreeBSD=192.168.1.1

> I'm using a cable modem with dynamic IP (It doesn't change until I
> reset the modem) through a Ethernet compatible card (device = ed1). The
> Windows2k computer is connected with a 3com905b (device = xl0)...

> Now to the problem! I've installed natd and its working excellent as a
> gateway except one thing, the Windows2k computer cant resolv dynamic IP
> adresses (like www.blahblah.com), only clean IP (ex. 1.2.3.4.) - can't
> be too specific! :) It IS possible to ping computers outside the local
> network with the Windows2k computer.
> Thats the problem. I'm not very experienced with FreeBSD and networking
> yet so I have no clue what it could be. I would be very glad if someone
> could find a solution to my problem.

> Here is some config files:
> ------------------------------------
> rc.conf: (snapped)
> firewall_enable="YES"
> firewall_script="/etc/rc.firewall"
> natd_program="/sbin/natd"
> natd_enable="YES"
> natd_interface="ed1"
> natd_flags="-f /etc/rc.natd"
> -------------------------------------
> rc.firewall:
> /sbin/ipwf -f flush
> /sbin/ipwf add divert natd all from any to any via ed1
> /sbin/ipwf add pass all from any to any
> -------------------------------------
> rc.natd:
> log no
> deny_incoming no
> use_sockets no
> same_ports yes
> verbose no
> unregistered_only no
> dynamic yes
> -------------------------------------

> Sent via Deja.com http://www.deja.com/
> Before you buy.

by **Kurt Wer** » Wed, 10 May 2000 04:00:00

>Now to the problem! I've installed natd and its working excellent as a
>gateway except one thing, the Windows2k computer cant resolv dynamic IP
>adresses (like www.blahblah.com), only clean IP (ex. 1.2.3.4.) - can't
>be too specific! :) It IS possible to ping computers outside the local
>network with the Windows2k computer.
>Thats the problem. I'm not very experienced with FreeBSD and networking
>yet so I have no clue what it could be. I would be very glad if someone
>could find a solution to my problem.

This is not a natd problem (unless I'm very mistaken). It is a resolver
problem. Can your freebsd box ping www.apple.com? If so, you have 2
choices: either run named on your freebsd box and tell your windows machine
that it is your resolver (this has advatages if your lan grows), or just
tell your windows machine that it's NAMESERVER is your ISP's nameserver
address.

Kurt
--
---

http://www.pobox.com/~kwerle/

Very Computer

DNS gateway problem in my local network using natd

DNS gateway problem in my local network using natd

DNS gateway problem in my local network using natd

DNS gateway problem in my local network using natd