On Fri, 2009-06-12 at 08:36 -0700, Mike Lander wrote:
>
> >
> > Mike Lander wrote:
> >
> > > not sure how to config shorewall or if I have this bridge right but
> > > now there seems to be several ways to config shorewall here
> > > which shorewall docs should I look at with suse 11.1 and shorewall 4.2.9?
> >
> > Hi Mike,
> >
> > 'brctl show br0' will show you the bridge configuration.
> Tom
>
> linux-rwu0:~ # brctl show br0
> bridge name bridge id STP enabled interfaces
> br0 8000.0016177efed1 no eth1
> tap0
>
> >
> > Do you need to firewall traffic through the bridge? If not, simply set
> > 'routeback' on 'br0' and you are finished. That's
> > http://www.shorewall.net/SimpleBridge.html. If you need to firewall
> > traffic through the bridge, then you need to folllow
> > http://www.shorewall.net/bridge-Shorewall-perl.html.
>
> I do need to firewall traffic to the internet eth0, however traffic
> between the bridge I just need traffic shaping. I remove the push
> route and bridge option.
>
> Items I changed in shorewall from stock two interface is in interfaces,masq,
> and routestopped
> which is correct according to simple bridge I believe. I changed these as
> follows
>
> net eth0 detect tcpflags,nosmurfs
> loc br0 detect routeback
>
> masq
> eth0 br0
>
> routestopped
> br0 -
>
> However when starting the bridge with /etc/init.d/bridge, I lose connectivity
> with
> the internet from the firewall and lan. I believe routing in the
> /etc/init.d/bridge
> is incorrect. I followed examples and I believe the gateway is incorrect.
> Here is /etc/init.d/bridge, ip route ls and ifconfig.
>
> #!/bin/bash
>
> ########openvpn bridge-script#################
> # Set up Ethernet bridge on Linux
> # Requires: bridge-utils
> #################################
>
> # Define Bridge Interface
> br="br0"
>
> # Define list of TAP interfaces to be bridged
> tap="tap0"
>
> # Define a list of physical ethernet interfaces to be bridged
> # with TAP interface(s) above.
> #
> eth="eth1"
> eth_ip="10.194.79.191"
> eth_netmask="255.255.255.0"
> eth_broadcast="10.194.79.255"
> default_gw=10.194.79.191
>
Don't add default_gw here, the firewall would be the gateway for that
lan.
> # Path to the system networking script
> # For Debian
> #NETWORK="/etc/init.d/networking"
> # For SuSE
> NETWORK="/etc/init.d/network"
>
> # Path to the openvpn start/stop script
> OPENVPN_INIT="/etc/init.d/openvpn"
>
> # Path to the openvpn binary
> OPENVPN="/usr/sbin/openvpn"
>
> # Path to the brctl binary
> BRCTL="/sbin/brctl"
>
> # Path to the ifconfig binary
> IFCONFIG="/sbin/ifconfig"
>
> # Path to the route binary
> ROUTE="/sbin/route"
>
> do_start(){
>
> for i in $tap; do
> $OPENVPN --mktun --dev $i
> done
>
> $BRCTL addbr $br
>
> for i in $eth; do
> $BRCTL addif $br $i
> done
>
> for i in $tap; do
> $BRCTL addif $br $i
> done
>
> for i in $eth; do
> $IFCONFIG $i 0.0.0.0 promisc up
> done
>
> for i in $tap; do
> $IFCONFIG $i 0.0.0.0 promisc up
> done
>
> $IFCONFIG $br $eth_ip netmask $eth_netmask broadcast $eth_broadcast
>
> $ROUTE add default gw $default_gw
>
> $OPENVPN_INIT start
>
> }
>
> do_stop(){
>
> $IFCONFIG $br down
> $BRCTL delbr $br
>
> for i in $tap; do
> $OPENVPN --rmtun --dev $i
> $IFCONFIG $i down
> $NETWORK force-reload
> done
>
> $OPENVPN_INIT stop
>
> }
>
> case "$1" in
>
> start)
> do_start
> ;;
> stop)
> do_stop
> ;;
> restart)
> do_stop
> sleep 1
> do_start
> ;;
> *)
> echo "usage: $0 start|stop|restart" >&2
> exit 3
> ;;
> esac
> exit 0
>
> linux-rwu0:~ # ip route ls
> 75.149.172.80/28 dev eth0 proto kernel scope link src 75.149.172.88
> 10.194.79.0/24 dev br0 proto kernel scope link src 10.194.79.191
> 169.254.0.0/16 dev eth0 scope link
> 127.0.0.0/8 dev lo scope link
> default via 10.194.79.191 dev br0 scope link
> default via 75.149.172.94 dev eth0
>
> The gateway to br0 is the problem I think. Since the firewall already has
> a gateway do enter 75.149.172.94 as the gateway in /etc/init.d/bridge?
>
No don't add anything to the bridge script as a gateway.
> ifconfig
>
> linux-rwu0:~ # ifconfig
> br0 Link encap:Ethernet HWaddr 00:16:17:7E:FE:D1
> inet addr:10.194.79.191 Bcast:10.194.79.255 Mask:255.255.255.0
> inet6 addr: fe80::216:17ff:fe7e:fed1/64 Scope:Link
> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
> RX packets:1742 errors:0 dropped:0 overruns:0 frame:0
> TX packets:881 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:0
> RX bytes:145423 (142.0 Kb) TX bytes:257627 (251.5 Kb)
>
> eth0 Link encap:Ethernet HWaddr 00:14:D1:13:43:11
> inet addr:75.149.172.88 Bcast:75.149.172.95 Mask:255.255.255.240
> inet6 addr: fe80::214:d1ff:fe13:4311/64 Scope:Link
> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
> RX packets:739 errors:0 dropped:0 overruns:0 frame:0
> TX packets:309 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:1000
> RX bytes:69916 (68.2 Kb) TX bytes:36146 (35.2 Kb)
> Interrupt:20 Base address:0x4000
>
> eth1 Link encap:Ethernet HWaddr 00:16:17:7E:FE:D1
> inet6 addr: fe80::216:17ff:fe7e:fed1/64 Scope:Link
> UP BROADCAST RUNNING PROMISC MULTICAST MTU:1500 Metric:1
> RX packets:2987 errors:0 dropped:0 overruns:0 frame:0
> TX packets:1538 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:1000
> RX bytes:317952 (310.5 Kb) TX bytes:528815 (516.4 Kb)
> Interrupt:23 Base address:0xc000
>
> lo Link encap:Local Loopback
> inet addr:127.0.0.1 Mask:255.0.0.0
> inet6 addr: ::1/128 Scope:Host
> UP LOOPBACK RUNNING MTU:16436 Metric:1
> RX packets:25 errors:0 dropped:0 overruns:0 frame:0
> TX packets:25 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:0
> RX bytes:2788 (2.7 Kb) TX bytes:2788 (2.7 Kb)
>
> tap0 Link encap:Ethernet HWaddr 8E:F2:06:E9:82:70
> inet6 addr: fe80::8cf2:6ff:fee9:8270/64 Scope:Link
> UP BROADCAST RUNNING PROMISC MULTICAST MTU:1500 Metric:1
> RX packets:0 errors:0 dropped:0 overruns:0 frame:0
> TX packets:1067 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:100
> RX bytes:0 (0.0 b) TX bytes:85438 (83.4 Kb)
>
>
> Mike
>
Jerry
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