Switch network configuration on demand

Hi

> By the way my DSL modem has only one plug, is there a way I can hook the
> laptob without disconnecting the fix computer? Without changing modem, of
> course... I strongly surmise the answer is no, but just in case...

Yes, I think so. The modem is just a normal network device. So you can
connect the two computers and the modem with a hub/switch. Of course only
one computer can use the modem at once.

HTH,
Kevin

F.P. Laussy wrote:
> Hi,
>
> I've got a laptop, which is configured to be hooked to a LAN with a
static
> IP (set in /etc/network/interfaces). I would like, however, to
connect also
> from outside my working place, for instance at home where I have ADSL
> connection with dynamic IP, or at some other LAN in another place.
How
> could this be done easily? (without messing myself with the config
files,
> of course, in which case I understand this can be done easily, just
this is
> awkward and time consuming)

Try this for starters:
http://tuxmobil.org/Mobile-Guide/mob...html#id2527765

If your laptop distro supports net profiles (Suse, Redhat/FC, others?)
you can choose which one to use -- much easier with static network
setup at office and home.

> By the way my DSL modem has only one plug, is there a way I can hook
the
> laptob without disconnecting the fix computer? Without changing
modem, of
> course... I strongly surmise the answer is no, but just in case...

ISP -> dsl modem ->
|
DesktopPC
(gets dynamic IP via dhcp)
(provides NAT via iptables for laptop)
(and implements a firewall which you need)
(/proc/sys/net/ipv4/ip_forward = 1)
|
LaptopPC
(uses static home profile)

Despite what you may have heard, they can both use the modem at the
same time with appropriate one-time config setup. Desktop needs an
extra nic to provide routing to laptop.

Easier to get a router/switch that gets assigned the dynamic IP from
ISP and NATs and forwards for both the PCs (can even provide
config-setup of PCs in router admin page though it will be profile dumb
re: your laptop). These always(?) include a firewall also. Linksys
uses an embedded Linux for its OS. But ask for opinions about "best"
router to use.

hth,
prg
email above disabled

F.P. Laussy wrote:

> I've got a laptop, which is configured to be hooked to a LAN with a static
> IP (set in /etc/network/interfaces). I would like, however, to connect
> also from outside my working place, for instance at home where I have ADSL
> connection with dynamic IP, or at some other LAN in another place. How
> could this be done easily? (without messing myself with the config files,
> of course, in which case I understand this can be done easily, just this
> is awkward and time consuming)
>
> By the way my DSL modem has only one plug, is there a way I can hook the
> laptob without disconnecting the fix computer? Without changing modem, of
> course... I strongly surmise the answer is no, but just in case...

The best solution, is to get one of those cheap firewall/router boxes. It
will allow multiple computers to share the ADSL modem, and also add
significantly to security.

Also, if you must retain a static IP for work and use DHCP elsewhere, you
can use profiles in Linux, to enable either configuration.

Hi,

I've got a laptop, which is configured to be hooked to a LAN with a static
IP (set in /etc/network/interfaces). I would like, however, to connect also
from outside my working place, for instance at home where I have ADSL
connection with dynamic IP, or at some other LAN in another place. How
could this be done easily? (without messing myself with the config files,
of course, in which case I understand this can be done easily, just this is
awkward and time consuming)

By the way my DSL modem has only one plug, is there a way I can hook the
laptob without disconnecting the fix computer? Without changing modem, of
course... I strongly surmise the answer is no, but just in case...

Cheers,

F.P.L.