routing

You need to provide router for both networks and allow IP forwarding from eth1 to eth0

This is what I would have done (of course, not tested)

ifconfig 192.168.146.1/24 eth0 up
ifconfig 192.168.145.1/24 eth1 up
route add default gw 192.168.146.107 eth0
echo 1 > /proc/sys/net/ipv4/ip_forward
/sbin/iptables --append FORWARD --in-interface eth1 -j ACCEPT

You'll need more tweaks if you want things like nat etc.

Obviously those commands are for you to test, you'll need to place the settings in their propper files

HTH

Hi again,

I've posted the message with my laptop battery almost exhausted :-)

Now with a little more time I want to add a couple of things:

Probably you'll need to add a rule like:

/sbin/iptables --append FORWARD --in-interface eth0 -j ACCEPT

to allow traffic in the other way

Also, you should configure the devices in the network 192.168.146.0 with their DEFAULT GW pointing to the 192.168.146.107 IP, but you'll need to add an additional router to each one that uses 192.168.146.1 as GW for the 192.168.145.0 network.

For the devices in the network 192.168.145.0 will be enough to configure each one to use as the DEFAULT GW the IP 192.168.145.1. They will reach both the devices in 192.168.146.0 and the WAN destinations

HTH