Jaguar's Built-In Router

For years my local DSL provider allowed multiple DHCP server 
connections for a single residence, making it easy to connect several 
computers to the net. Recently they reconfigured their server to 
allow only one address per customer. This left me with three options:

1. Buy a hardware router in addition to the brand new high-speed 
switch I had just installed.

2. Buy a software router (IPNetRouter, etc.).

3. Forgo DSL service on my wife's G3.

Since No. 3 was obviously not an option, I began exploring the first 
two options. To my great delight, I have discovered that OS X 10.2 
has a solid built-in software router which allows you to share your 
internet connection with several client machines.

To put your free router into operation:

1. Plug in in the ethernet cable from your internet source (cable or 
dsl modem) into the uplink port in your hub/switch. (If the 
hub/switch has auto cable detection, plug the source cable into any 
port you want.)

2. Plug the "host" Jaguar computer into Port 1 on your hub/switch (or 
any port you want with auto-detection).

3. In the Jaguar Network control panel on the host computer, choose 
"Network Port Configurations."

4. Add a second "Built-in Ethernet" which becomes your software 
router and name it "Software Router" or anything else you want. (You 
must keep the old "Built-in Ethernet" for the incoming signal 
configured to your current ISP.)

5. Configure the newly created "Software Router" ethernet 
configuration like this:

   IP Address:  192.168.150.1
   Subnet Mask: 255.255.255.0
   Router:      192.168.150.1
   DNS Server:  (The ones your ISP provided you with.)

6. Go to the Jaguar "Sharing" control panel, click the third tab 
named "Internet" and check the "Share the connenction with other 
computers on Built-In Ethernet" check box and then click the "Start" 
button to turn on sharing.

7. Plug the "client" computer into Port 2 on your hub/switch (or any 
port you want with auto-detection).

8. On the "client" machine create a new TCP/IP ethernet configuration:

   IP Address:   192.168.150.2
   Subnet Mask:  255.255.255.0
   Router:       192.168.150.1
   DNS Server:   (The ones your ISP provided you with.)

8. Check the "Share the connenction with other computers on built in 
ethernet"  if the client is on OS X. If the client machine is running 
Classic, enable the TCP/IP sharing features in the "File Sharing" 
control panel.

9. For additional client machines, repeat the above changing the IP 
address for each added machine (other settings remain the same):

   IP Address:   192.168.150.3
                 192.168.150.4
                 192.168.150.5  etc.


I'm running a 10/100 auto-detect switch with excellent net speed on 
both the "server" and "client" machines. I hope this tip saves you 
some money if you find yourself in my position.

Ken Shmidheiser
Somerset, KY