Home Network Connections

David A. Bandel david
Mon May 17 11:49:15 PDT 2004


On Fri, 11 Jul 2003 23:36:46 -0700
Tom Lombardo <tlombardo at caserdoo.com> wrote:

Not the info I needed.

Unless your router had the Desktop and Laptop (Wireless) interfaces
bridged, you need different subnets on those two interfaces.

                     ------------
                     | Internet |
                     ------------
                           |
                     ------------
                     |  Router  |
                     ------------
         ______________|A     |B
        |                     |
    ----------                |      ----------
    | Desktop |                ------| Laptop |
    -----------                      ----------

OK, let's assume your router connection (eth0) to the Internet is good.
Then you have Interface A (eth1) connected to your desktop.
You have Interface B (wlan0 or eth2) connected to your laptop.

A and B, unless you are running a bridge, must have IPs on different
subnets:
A:  192.168.0.1 with Destop 192.168.0.2
B:  192.168.1.1 with Laptop 192.168.1.2
each address above uses netmask 255.255.255.0 w/ broadcast at
xxx.xxx.xxx.255

This also makes masquerading (SNAT) to the Internet easy:
iptables -t nat -A POSTROUTING -s 192.168.0.0/23 -o eth0 -j SNAT
--to-source xxx.xxx.xxx.xxx

This help?

> 
> David,
> 
> Thank you again!
> 
> I found more about the router:
> Channel = 6
> WEP encryption disabled

Not relevant

> 
> The laptop:
> 
> In the Network Configuration tool the DNS tab contains this info:
> Hostname = wireless
> Primary DNS 192.168.2.1
> Secondary DNS = [blank]
> Tertiary DNS = [blank]

worry about DNS later.  Get basic networking working first.

> 
> In the KDE Control Center, Network > LAN Browsing settings:
> LISa daemon
> 	Scan these addresses 192.168.2.2/255.255.255.0
> 	Trusted addresses 192.168.2.2/255.255.255.0
> 	Broadcast network addresses 192.168.2.2/255.255.255.0
> ResLISa daemon
> 	Trusted addresses 192.168.2.2/255.255.255.0

[snip]

David A. Bandel
-- 
Focus on the dream, not the competition.
		Nemesis Racing Team motto
GPG key autoresponder:  mailto:david_key at pananix.com
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