Hi,
I've get a local network with several workstations attached through a
firewall to the internet by two types of connections: one is called
ADSL, which is cheaper, but with lower bandwidth. the other called T3,
faster but more expensive.
I want to enable each workstation from the localnet to choose it's
connection by setting it's default gateway to one of the firewall's ip
on eth0: 192.168.10.8 for ADSL and 192.168.10.9 for T3. additional each
workstation regardless its gateway ip should be able to access the dmz.
the topology of the net would be something like this:
INTERNET
=======================================
| |
| |
DynIP 212.x.x.195
/------------\ /---------------\
| DSL-ROUTER | | T3-ROUTER |
\------------/ \---------------/
192.168.11.1 62.x.x.89
192.168.11.0/24 62.x.x.88/29
| |
| |
192.168.11.8 62.x.x7.90
192.168.11.0/24 62.x.x.88/29
eth3 eth1 w/ ProxyARP
/---------------\
| FIREWALL |
\---------------/
eth0:1 eth0 eth2 w/ ProxyARP
192.168.10.8 192.168.10.9 62.x.x.90
192.168.10.0/24 62.x.x.88/29
| \
| \
=========================== eth0
LOCALNET 62.x.x.93
62.x.x.88/29
/-----\
| DMZ |
\-----/
My problem is how to route the packages from the localnet to either ADSL
or T3, depending on wether they were received by the ip 192.168.10.8 or
192.168.10.9.
I tried to mark the packages in the postrouting chain of iptables and
send them to different routing tables. but iptables can't handle aliased
interfaces like eth0:1 as source devices.
Next step was to set up routing depending on incoming interfaces, but
there was no effect in the actual routing.
my current configurations are:
# ip rule ls
0: from all lookup local
32765: from all iif eth0:1 lookup ADSL
32766: from all lookup main
32767: from all lookup default
# ip route show
62.x.x.89 dev eth1 scope link
62.x.x.88/29 dev eth2 scope link
192.168.11.0/24 dev eth3 proto kernel scope link src 192.168.11.8
192.168.10.0/24 dev eth0 proto kernel scope link src 192.168.10.9
default via 62.x.x.89 dev eth1
# ip route show table ADSL
62.153.117.88/29 dev eth2 scope link
default via 192.168.11.92 dev eth3
Has anyone ideas of solving the problem?
Thanks,
oli
