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IP NetRouter

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Connecting to the Internet using OT/PPP and Ethernet

IPNetRouter assumes that you connect to the internet with OT/PPP 1.0.x or Remote Access 3.x on your gateway Mac. The gateway Mac and at least one another computer should be connected via ethernet through a hub or crossover cable.

Setting up the Gateway Machine

Step One: Install IPNetRouter

IPNetRouter only needs to installed on the Gateway machine. The Gateway machine and its modem is the shared Internet connection for all other computers. It is the "Gateway" to the internet. You may need to think about which machine would serve this purpose best. IPNetRouter must always be open on the Gateway machine for others to access the internet through it. Use the installer to install IPNetRouter, but don't open the application yet.

Step Two: Configuring TCP/IP

Open the TCP/IP Control Panel (that's under the Apple Menu:Control Panels). Under the File Menu choose "Configurations." In the greyed out Title Bar of TCP/IP which is behind the Configurations window, you'll see a name in "( )" beside TCP/IP. You'll have to drag your Configurations window a bit. In this pic it is TCP/IP(Default). The name in the "( )" is the primary configuration set. Click on it in the configuration window and rename it to "IPNetRouter".

Now duplicate "IPNetRouter". Rename it "EtherRouter". Click "Make Active".

Pic of Gateway TCP/IP:Config window

You're back to the TCP/IP window. Using the "Connect via" popup menu, select "Ethernet".

For the "IP Address" enter "192.168.0.1". (Write this number down. You'll need it for the Slave Machines.)

For the "Subnet mask" enter "255.255.255.0".

Do not worry about entering a "Router number". This will be setup automatically when your configure your PPP interface.

The "Name server addr" should already be there. These are the numbers your ISP gave you to set up your access to their server. Don't mess with them!

Click "Options" and make sure OT/PPP is configured to connect automatically when starting TCP/IP applications.

Close or Quit TCP/IP and save this configuration.

Example of Gateway Ethernet TCP/IP Configuration

 

Step Three: Setting up IPNetRouter

Launch IPNetRouter. An "Interfaces" window similar to the one below should appear. Using the popup menu in the "Configure Interface" area, select "PPP" and check the "IP masquerading" box. Make sure the IP address field is empty (this tells IPNetRouter that PPP will get its IP address from your PPP server and you want IPNetRouter to create a corresponding Default-Route for you automatically). Now click add to create this IP interface. This should cause PPP to connect.

Pic of IPNetRouter Interface

Your interface window should now have IPCP added to the list.

Save this setup as "EtherMask". You may want to put an alias in the Startup Items Folder in the System Folder. In any case, you'll want to launch IPNetRouter using this document.

Your Gateway machine is finished!

 

Pic of IPNetRouter finished

Slave Machine Setup

This is really easy! "Slave Machines" are any Macs that will use the Gateway machine and its modem for internet access.

Open TCP/IP. Using the "Connect via" popup menu, select "Ethernet".

For the "IP Address" enter "192.168.0.2". Notice it is the next number in sequence from the Gateway Machine number, "192.168.0.1". Any other Slaves get the next sequential number: "192.168.0.3"; "192.168.0.4"; etc.

For the "Subnet mask" enter "255.255.255.0". This is the same as the Gateway machine.

Now you need a "Router" number. This points the Slave to the Gateway machine. Enter the IP Address of the Gateway machine, "192.168.0.1".

The "Name server addr" should already be there. These are the numbers your ISP gave you to set up your access to their server. Don't mess with them!

Example of a Client Mac's TCP/IP

Click "Options" and make sure OT/PPP is configured to connect automatically when starting TCP/IP applications.

Close or Quit TCP/IP and save this configuration.

Try opening an internet application like a net browser. Voila! You're on the net through the Gateway machine.


Copyright 1998 by Sustainable Softworks.
These instructions were contributed by Jeff Singletary.

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