How to stop internet access from eth1?

[Josh1]

Hi All,

I have a bit of a "unique" situation here. I have myself plugged into two networks - since we run two networks here at work (long story, we merged and never combined them due to two different companies) and want to block ALL internet access off eth1, and only have it off eth0.

I only want traffic from 192.168.67.1-192.168.67.255 allowed on eth1, but everything allowed on eth0.

Or is there a way for the internet/applications to be on eth0 instead of eth1? Would I use iptables or something?

[utnubuuser]

would that be something along the lines of

sudo ifdown eth1

or, right-click the network icon, select "edit connections" and remove/edit eth0 or eth1

[Josh1]

would that be something along the lines of
or, right-click the network icon, select "edit connections" and remove/edit eth0 or eth1

I want to use both network cards, since I need to connect to the Windows Server for development (building a web application with LDAP, and need to connect to the Windows Server to test authentication etc).

I just only want it to work internally.

[Iowan]

Just thinking out loud...
Routing could send all 192.168.67.X traffic to eth1, and eth0 could be the default for everything else - but that doesn't sound exactly like what you described...

[dtoronto]

Not sure exactly what you are trying to do, but you can set your default gateway to the interface that you would like to run your internet over which will force requests out that NIC but still allow incoming requests over the other. Are both NIC's connected to the same gateway? Are you trying to block all traffic from one NIC?