Problem with gateway and ipfw in FreeBSD 5.2

[Nathan Kinkade]

On Fri, Jul 02, 2004 at 11:23:05AM +0800, Tony Liew wrote:
> Hi,
> 
> Currently I am trying out FreeBSD 5.2.
> 
> SDSL modem
>    |
> FreeBSD Router
>    |
> Internal network
> 
> My problem, from FreeBSD I can ping outside and inside network.
> from Internal network, I can ping internal interface and external 
> interface of FreeBSD Router. But I cannot ping the modem IP address so 
> goes public DNS server on the internet.
> 
> I have in my KERNEL:
> options   BRIDGE
> options   DIVERT
> options   IPFIREWALL
> options   IPFIREWALL_DEFAULT_TO_ACCEPT
> 
> rc.conf
> gateway_enable="YES"
> defaultrouter="<modem ip>"
> firewall_enable="YES"
> firewall_type="OPEN"
> natd_interface="<external interface>"
> natd_enable="YES"
> router_enable="YES"
> 
> sysctl.conf
> 
> net.link.ether.bridge.enable=1
> net.link.ether.bridge.config=external interface, internal interface
> net.link.ether.bridge.ipfw=1
> 
> 
> client on the internal network cannot connect to the internet. Any 
> suggestion?
> 
> Thanks a lot.
> 
> Regards,
> Tony Liew

Why do you have bridging enabled?  Trying turning off bridging:
	net.link.ether.bridge.enable=0
And then make sure that you have the FW enabled:
	net.inet.ip.fw.enable=1

Nathan
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