On 12-12-22 06:51 PM, Lupe Christoph wrote:
> 
> The address of the "lan" interface of your router, of course.

The documenation says that "src" is:

  Specifies the traffic source zone. Must refer to one of the defined
  zone names.

You must be thinking of src_ip.  But as I noted in my original message,
it is insufficient to simply use IP addresses in firewall rules.  IP
addresses must be coupled with interface bindings so that you are not a
victim of IP spoofing.

> I apologize for the complexity of this. It was generated by fwbuilder
> from an fwbuilder rule that contains a lot more that you need.

Yes, thanks.  But I am not really looking for other tools to do packet
filter building.  I already have a thorough understanding of packet
filtering, security concepts and am quite capable of building complex
iptables rules and equally capable of using meta-tools to build them.
My question was specifically about using OpenWRT's native firewall
processing to accomplish my security policy.

> And
> fwbuilder uses chains a lot.

So does Shorewall.  But that's not my goal (although it looks like I
will be using Shorewall for a while still.

> I guess for you, this might work:
> $IPTABLES -A OUTPUT -o br-lan -s 172.17.0.1 -d 172.17.0.0/24 -m state --state 
> NEW -p udp -m udp --dport 514 -j ACCEPT

Of course.  But I am looking to encode that rule into
/etc/config/firewall.  But as Jow mentioned in the other message,
OpenWRT's firewall module is not (yet?) capable of such a rule.  :-(

Thanks for your consideration though.

Cheers,
b.


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