Did you add on the iptables hook for bridging and activate all the proper configuration settings? I has a similar problem with 2.4.22 (under RH9) because I forgot to menuconfig and add in the proper settings. --- Derek Storvik <dstorvik@xxxxxxxxxxxxxxxxxxxxx> wrote: > Hello all > Hopefully someone can see my error. > I have been running RH7.3 with it's standard kernal > version 2.4.18-3 for several months configured as a > transparent bridging firewall. We recently purchased > a new machine and wanted to install RH9 with its > standard kernal 2.4.20( i think)I followed the same > steps installed with iptables and bridging utils and > used my same script file to setup the bridge with > two nics and fill in all my rules. This didn't seem > to work right and on further testing realized > NOTHING was being filtered. I then rebooted and > manualy set up the bridge and cleared all the tables > and set the default policy to drop. SO at this point > nothing should get through. Well it bridges > everything, and the counters in iptables do not > increment. The system acts as if it is not there > what so ever. > > here is the setup after the basic minimal install > brctl addbr br0 > brctl addif br0 eth0 > brctl addif br0 eth1 > ifconfig eth1 0.0.0.0 promisc > ifconfig eth0 0.0.0.0 promisc > #bring up bridge with either of the next two > commands > ifconfig br0 up > ip link set br0 up > #both do the same thing namely nothing > iptables -X > iptables -F > iptables -P FORWARD DROP > iptables -P INPUT DROP > iptables -P OUTPUT DROP > > This setup happily bridges packets right on through > with no updates to the iptables counters. > > I have been experimenting with devil linux as well > recently and it exhibits the same problem. > > ip_forwarding is set to 0 as it has been on my > working rh7.3 machine I tried setting it to 1 but > that didn't help the problems. Im not 100% sure what > exactl the ip_forwarding property corresponds to > anyway. > > any help would be greatly appreciated! > Thanks > Derek > > __________________________________ Do you Yahoo!? Free Pop-Up Blocker - Get it now http://companion.yahoo.com/
