From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tom Gaudasinski Subject: Routing from private to bridge Date: Sat, 22 Oct 2005 00:14:57 +0000 Message-ID: <43598481.8040306@internode.on.net> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: netfilter-bounces@lists.netfilter.org Errors-To: netfilter-bounces@lists.netfilter.org Content-Type: text/plain; charset="us-ascii"; format="flowed" To: netfilter@lists.netfilter.org Greetings, I have a problem in regards to the routing i've set up. I have a public subnet bridged from my ISP(DSL), it's a full bridge. So in order to use this subnet i have created a bridge out of two eth interfaces so that i may also firewall what will be behind the router. In addition to this I have a private subnet (192.168.1.x) that I NAT to the public IP of the router. My setup looks like this: DSL Modem (in bridge mode) | / eth0 \ 120.40.60.194/29 \ eth1 / / \__ Publically addresses machines eth2 192.168.1.1___Privately NATted machines So eth0 and eth1 are part of the bridge (which has 1 ip address), and eth2 has a private address. eth0 plugs directly into the dsl modem, eth1 into a switch that contains publically addressed computers and eth2 logically so as well. I've set the rules up so that the users behind eth2 get natted and the public users also get internet. This works, what doesn't work however is that the 192.168.1.x users cannot communicate with the publically addressed users through the router. Even when the firewall has been cleared out (of natting rules) they still cannot ping or communicate. It seems there's a different procedure for routing to a bridge. my route -n output is: Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 120.40.60.192 0.0.0.0 255.255.255.248 U 0 0 0 br0 192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth2 0.0.0.0 120.40.60.193 0.0.0.0 UG 0 0 0 br0 How can i get the private LAN users to route to the publically bridged subnet? Thankyou.