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InJoy Gateway

The InJoy Gateway is the base module in the InJoy Firewall suite. It allows users on your Private LAN to access the Internet through a single machine connected to the Internet.

The Internet sharing technique implemented by the InJoy Gateway is known as Network Address Translation (NAT). NAT is a standard for Internet sharing, widely supported by the major firewall vendors such as Cisco, 3COM, IBM, Shiva. One major advantage of NAT, is that it operates beneath the routing layer, so expect the InJoy Gateway to out-perform application layer proxies. Another advantage of NAT is that the work stations on your internal LAN get direct access to the Internet, without reconfiguration of network applications. For some general information about NAT and products, refer to The Nat Page resource.

Here is how the IEFT working group describes NAT:

"IP V4 Network Address Translation (NAT) has become an increasingly common function in the Internet for a variety of reasons. NATs are used to interconnect a private network consisting of unregistered IP addresses with a global IP network using limited number of registered IP addresses. NATs are also used to avoid address renumbering in a private network when topology outside the private network changes for variety of reasons. And, there are many other applications of NAT operation."

The InJoy Gateway component is NOT in itself a firewall, but by its very nature of operation, it does provide security for all LAN clients using it as their gateway (by disallowing all incoming TCP/IP connections). A typical network sharing is illustrated below:

Install The InJoy Gateway 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!

NAT will not just work for OS/2, but also for any other type of LAN client, such as: Windows 3.11, Windows 95/98, Windows NT, MAC, Unix, Linux, etc.


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