|InJoy a personal LAN|
in your home with IP Masquerading
|- by Jon Winters|
Last December my curiosity was piqued by a good article by Ethan Hall Beyer titled "How to share an Internet connection for little or no cost". This article triggered a chain reaction of ideas in my brain that had me constantly thinking of the benefits of sharing a modem connection.
My situation is a little different from most though, in that my home computer is a web server called Obscura! Obscura stays connected to the Internet all the time on a dedicated ISDN line.
My employer was kind enough to provide me with a killer IBM ThinkPad 760ED. This is a great computer but not being able to dial the laptop in to the Internet without tying up another phone line was a real bummer. So I decided that I needed to set up a LAN in my home office.
Ethan's solution for sharing a modem mentioned above involves running quite a few servers and some client software. While this is a good solution, I always consider many ways to do every project and usually choose the path that involves the least amount of resources. One of my main goals for Obscura is high reliability and I knew that running the SOCKS server would require running a Domain Name Server on Obscura. I have no less than ten programs running 24 hours a day already so I was looking for a simpler solution.
The InJoy dialer also has built in IP-masquerading for sharing its connection with more than one computer. In fact, I found that combined with Warp 4 or Warp Connect, InJoy can get the same results as Ethan's solution, using less system resources. So I decided to set up a personal LAN with InJoy's IP masquerading!
IP Masquerading allows you to share one dial up connection. With it you can use InJoy as an Internet gateway for your LAN even though you have only one IP address and modem.I am happy to report that this is very easy to set up and it works great! If you have more than one computer in your house and would like to share a modem connection to the Internet, InJoy and Warp 4 or Warp Connect is all you need.
Install InJoy on one computer and everyone can surf the 'net, get mail, read news, telnet and everything else, from any computer on the LAN, all at the same time!
In addition to sharing the connection InJoy works like a firewall by stopping intruders from ranging around inside your LAN. The outside world cannot gain unsolicited access. My ThinkPad is protected without me blowing a pile of money on routers, firewalls, IP numbers, etc.
Well okay, you will need a few other things...
Obscura has a 3Com Impact IQ ISDN adapter. My ThinkPad has a 3Com Etherlink III PCMCIA Ethernet card and I decided to keep a good thing going by purchasing a 3Com Etherlink III Ethernet card for Obscura. The hub is the cheapest one available at the local computer "mega-store". It's a MaxTech 5 port unit.
InJoy's IP masquerading will work with any decent Ethernet card and if you want to save some bread you can go with coax cable and you won't even need a Hub. My ThinkPad Ethernet card was 10base-T so I had no choice. (note: the 3Com cards pack a lifetime warranty and work great with OS/2.)
You do NOT need to run a DNS server, Route daemon or SOCKS server. You only need InJoy.
I needed to configure the NetBios socket access. Of course I chose Obscura as the host name. You should use something else.
I have also been able to FTP files between the two computers because Obscura is running an FTP server. I can even hit my Proxy server at work from "shadow" to access the corporate intranet.
If you have more than one computer in your home and have been thinking of setting up a LAN, InJoy is a great and easy way to connect your personal LAN to the Internet!
InJoy is a product of F/X Communications.
Feel free to e-mail me if you have any questions.
[Our Sponsor: EmTec Innovative Software - OS/2 ISDN, modem and telnet software.]
Copyright © 1997 - Falcon Networking
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Copyright © 1997 - Falcon Networking