Re: Getting optus ADSL working on Ubuntu

John B wrote:

Robert Hull wrote:
On Tuesday 27 Jun 2006 03:52, John B <jbngspam@xxxxxxxxx> wrote in
alt.os.linux:

Hi all,
Firstly, I am by no means an expert in linux so feel free to point out
the "obvious" :)

I set up a ubuntu machine for my dad who is a 2 hour drive away from
me. I have optus cable so it works straight out of the box but he has
optus adsl and it doesnt work.

Is that a router or a "USB Modem"?
Siemens speedstream 4200 usb/ethernet dsl modem.
Connected via ethernet.

http://subscriber.communications.siemens.com/subscriber_networks/4100images.shtml

Using network-manager-gnome we checked the ip settings which all seem
to be good. An ip is assigned via dhcp in the 58.xxx range and the
primary and secondary dns servers seem fine.

What device is acting as the DHCP server?

Hmm, not sure, either the modem or the optus server.
I would guess that it would be the optus server since 58.xxx is in the
public range.

The only thing I could find was that eth0 was not set as the default
gateway device which we did via the network settings panel.

You don't want a "gateway device" you want a gateway address - i.e. the
IP number that will be used to route all traffic that does not have a
specific route assigned to it.

Agreed :)
How can I set a gateway address to my 58.xxx address?

Since you mention eth0, it looks like your dad **might* have a router.
If that is the case, then it is the router that should be set up with
the IP address from your provider. You should then have the router
allocate an IP address for your PC in the private range (usually
192.168.x.x). The lan-side IP of your router (often 192.168.0.1) then
becomes your default gateway.
Still we cannot ping google.com.au either by ip or by name.

Can you ping the ADSL device?

Not sure what the ip is for it.
Will try and get more info when I get home.

according to this
http://kb.efficient.com/utility/getfile.asp?rid=5226

The default network settings for the SpeedStream Router are:
IP Address: 192.168.254.254
Subnet Mask: 255.255.255.0

By default, the Router will act as a DHCP server

one way to check the IP of the modem/router
nmap -v -v 192.168.*.*

Hope that helps

Cheers
--
Eric S
.

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