disable lan card in text mode

[mfaridi]

I use debian sarge and like it alot
in home when i want connect to internet i have to use modem
if i want use modem first i have to disable or deactive my lan card
in this time i do not have graphical mode and i do not know how i can disable my lan card in text mode

i would be gratefull if any one say me how i can disable or enable network in text mode if i do not have graphical mode

[drakebasher]

I think you should be able to :

ifconfig eth0 down
...or maybe...
ifdown eth0

I think that in Fedora and others, you will find one or both of these commands in /etc/sysconfig/network/ or a subdirectory of that.