[vox-tech] using a modem and ethernet concurrently

[Charles McLaughlin]

Hello,

I'm having problems using my dial up modem and ethernet at the same time.
This is a real bummer because I'm trying to set up a router/firewall, but I
think I need to work this out first!  ;-)

I've found that I need to remove an iptable routing entry for the ethernet
card in order to be able to use the modem.  And it is imperative that I
remove that iptable entry before I dial up.

Here is what I've done to get it to work:

--------------

The default:

cmclaugh@linux-router:~$ route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use
Iface
192.168.0.0     0.0.0.0         255.255.255.0   U     0      0        0 eth0
0.0.0.0         192.168.0.1     0.0.0.0         UG    0      0        0 eth0


I have to run the following **before** I dialup or else I won't be able to
ping anything:

cmclaugh@linux-router:~$ route del default gw 192.168.0.1


Then I can dial up and connect:

cmclaugh@linux-router:~$ pon                    # dials the modem, etc

cmclaugh@linux-router:~$ route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use
Iface
169.237.17.97   0.0.0.0         255.255.255.255 UH    0      0        0 ppp0
192.168.0.0     0.0.0.0         255.255.255.0   U     0      0        0 eth0
0.0.0.0         169.237.17.97   0.0.0.0         UG    0      0        0 ppp0

-----------

Does this seem normal?  To me, what I've done seems like a crude work-
around.  Is there a better way to allow the modem and ethernet to live
together in peace?

Thanks for any advice!

Charles