Very Computer

Hi all,
How do you assign two ip addresses to a network card under redhat 6.1?
I would prefer the way not using X linuxconfig please as the machine does
not have X on it.

Thanks

 scribbled something about Assigning a network card two ip addresses...:

Quote:>Hi all,
>How do you assign two ip addresses to a network card under redhat 6.1?
>I would prefer the way not using X linuxconfig please as the machine does
>not have X on it.

ifconfig eth0
ifconfig eth0:0

tho what is do is create /etc/sysconfig/network-scripts/ifcfg-eth0:0
DEVICE=eth0:0
BOOTPROTO=none
BROADCAST=192.168.0.255
IPADDR=192.168.0.1
NETMASK=255.255.255.0
NETWORK=192.168.0.0
ONBOOT=yes

then restart networking

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Quote:>I would prefer the way not using X linuxconfig please as the machine does
>not have X on it.

linuxconf also works in textmode

I dont know how "buggy" Mandrake 6.1 is, but with Mandrake 7.0 I expirienced
the most strange thing when trying to install ip-aliasing.
When I used "linuxconf", it created the "ifcfg-eth0:0" files, but it didn't
include the "DEVICE = ETH0:0" line.
So when I tried to "restart the networking" it gave me only errors.
After adding the line, it still didnt seem to work (but it is neccesary).
In one of the script files (/etc/sysconfig/networking-scripts/ifup-aliases)
I found a line (13th line) where they load the "ifcfg-eth0:0" files, but
they forgot "ifcfg-" so it looked like: "eth0:0".

Change:

if [ ! -f /etc/sysconfig/network-scripts/$device:$current ]; then

To:

if [ ! -f /etc/sysconfig/network-scripts/ifcfg-$device:$current ]; then

Maybe I did something wrong, maybe im stupid :)) but maybe it may-be of help
:)

Martin Schipper
The Netherland

But you need this ability compiled into the kernel...

-g

do netconf, there is an option to specify alias IP for a card...

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Remember that needs to be compiled into the kernel to work...

-G

What's the reason to have 2 ipaddress in one card.  I thought you
needed to have 2 network cards to do IP mascerading, or firewalling.
That's what I would like to do, so if you can just put 2 address in
one network card and be able to do that, please let me know.  Thanks

Quote:>What's the reason to have 2 ipaddress in one card.  I thought you
>needed to have 2 network cards to do IP mascerading, or firewalling.
>That's what I would like to do, so if you can just put 2 address in
>one network card and be able to do that, please let me know.  Thanks

You can do that, but it leaves a lot of security holes / broadcast
problems / etc / etc /etc

Quote:> >What's the reason to have 2 ipaddress in one card.  I thought you
> >needed to have 2 network cards to do IP mascerading, or firewalling.
> >That's what I would like to do, so if you can just put 2 address in
> >one network card and be able to do that, please let me know.  Thanks

> You can do that, but it leaves a lot of security holes / broadcast
> problems / etc / etc /etc

Don't do that, The idea is to isolate and filter one network from the other
network.