Clients, Internal Mail Relay
And A Web Server

This configuration provides the security of our Firewall NATs, but permits an internal Mail Relay and a Web Server. In this package, we provide:

Unlimited Client Access
To The Internet

Our NAT devices give your client applications full access to the riches of the Internet. Unlike the usual methods, all of your clients appear to have the exact same IP Address, making your network a mystery to the Internet Bad Guy (IGB). Another benefit is the elimination of the need to publish names by way of the Domain Name Service (DNS) to make picky "anonymous" FTP sites happy. You publish a single IP Address and name, and everyone can use FTP.

Use of RFC 1597
IP Addresses

There is no need for you to register IP Addresses. In fact, if you're not an Internet Service Provider, you shouldn't use registered addresses. Your ISP will loan some addresses to you for the outside to see, but you'll use IP Addresses from RFC 1597 inside your Enterprise.

The NAT device will translate your actual internal IP Addresses to the apparent ones that your ISP loaned you. The outside world will have no idea of your internal network or its structure.

Dedicated Connection

As a provider of Web services, you will need a dedicated link. For the dedicated link, we offer the NetNAT, our premier Firewall NAT/router product. For the smaller, dialup site, the DialNAT is the device of choice.

Mapping of Incoming Email
Connections To Your Server

If you are comfortable with the security requirements of your mail server, you can have complete control over your email appearance. Our NATs intercept any inbound SMTP or POP3 requests and re-direct them to your internal mail server, even onto non-standard ports. You might wish to run the mail server that the outside sees on a non-standard port to keep it separate from your internal email. You can then use different sets of aliases for internal and external mail if you wish. The NetNAT and DialNAT can rewrite inbound connections for the normal SMTP or POP3 ports to the actual internal IP Address and port numbers of your server.
This page was last modified on 2 October, 1995.

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