Want a FREE DOS-based NAT?  Check this out!

Nothing like the word FREE to get you to click on it, huh? Listed below (some courtesy of Fred Lindahl) are Proxy and NAT programs that are free. Some are demo versions, limited to a few users.  Some are “freeware”.   Most run under Windows 95 or 98.  None run under the MacOS. Some are basically specially configured versions of Linux, intended to be run on a dedicated computer.

If they work for you, great.  If they don’t, then you might want to try one of the other programs mentioned in this site, including the free 2.1d version of Wingate.(Download the file wg21d95.exe for Win95 and wg21dnt.exe for WinNT.)

NOTE! I have not tried any of these programs and they are listed here for informational purposes only.  If you can’t get them to work, please contact the company, NOT ME! Thank you!

Free Proxy/NAT programs – Win95/98

AnalogX Proxy (AnalogX, proxyi.exe, 241KB)
Freeware Proxy Server.
AnalogX Proxy is a small and simple server that allows any other machine on your local network to route its requests through a central machine. Supports HTTP (web), HTTPS (secure web), POP3 (receive mail), SMTP (send mail), NNTP (newsgroups), and FTP (file transfer) protocols.

EasyProxy (Leech Software, EasyProxyServer.zip, 16KB)
Freeware HTTP Proxy Server.
Proxy Server, multithreaded engine provides fast access to dozens of LAN users. Share your dialup connection with the rest of the network.Perfect for small offices and homes with networks. Configure your clients to use proxy support and simply launch the server. No setup needed, it’s easy. Only free for 30-day trial.

Internet Gate (Maccasoft, igwin144.zip,408KB)
Free (1 Shared User) HTTP Proxy Server
A multiple proxy gate and firewall. It can allow users on a Local Area Network (LAN) without Internet access to access the Internet through a single machine on the LAN connected to the Internet, either via a dial-up modem / ISDN connection or another ethernet card.

NetProxy Lite (Grok Developments, np303.exe, 2,759KB)
Free (see below) Proxy Server
A secure, reliable and cost-effective way to provide simultaneous Internet access to multiple network users with only one Internetconnection of almost any type (a dialup modem account, ISDN, cable-modem, leased-line, etc.). Support for many protocols including HTTP (with Cache), secure HTTP, RealPlayer (audio and video), FTP, Telnet, SMTP & POP3, SOCKS and port mapping. Includes full access logging functionality, dial-on-demand, and a powerful configurable firewall. NetProxy is distributed as “try before you buy” shareware. This means that you can download a fully functioning 30-day evaluation version now. After the evaluation period has expired, NetProxy will continue to run with support for one user at a time – you can carry on using it in this mode completely free of charge!

Proxy+ (Fortech Ltd., pplus210_66us.exe, 500KB) http://www.proxyplus.cz/
(See description below)
128K Firewall, proxy and mail server gives the complete solution of shared access to Internet from LAN. Version for 2 users is absolutely free, versions for 5 ($99), 10 ($199) and unlimited users ($299) are available.


Sambar Server (Tod Sambar, Sambar42.zip, 2,445KB) http://www.sambar.com/
(See description below)
The Sambar Server is a multi-threaded HTTP, FTP and Proxy server.
Features include:
· Multi-threaded WWW Server with highly programmable API
· DLL-based server APIs (source code provided for Windows GUI wrapper
and NT Service)
· Easily Installed, Uninstalled and Configured
· Dynamic HTML via scripting language and extensible methods
· HTTP 1.1 KeepAlive Support
· HTTP PUT method support for one-button publishing
· FTP Server (per-user or group read/write restrictions)
· AD/content filtering via HTTP Proxy
· Integrated Search Engine
· Integrated Site Analysis
· Perl 5 included with server
· CGI 1.1 support
· WinCGI 1.3 support
· Username/password and IP address Security
· HTML based documentation and system configuration
· Many source code samples (sendmail client, security interfaces, page counter etc.)
As Microsoft and Netscape have the commercial market pretty well locked up, I’ll continue to enhance and distribute the Sambar Server for free until a new venture sweeps me off.


SOCKServ (Phil Fong GeoCities, sockserv.zip, 160KB)
(Freeware – free for non-commercial use!)
Number of connections is only limited by memory or other stuff! The practical limit is 64 or the winsock limit whichever is lower. Can pass requests to other SOCKS servers! – Check the “Chain to other SOCKS” box to do this. Can log all data that passes through it! – Check the “log” box. Can limit sending and receiving bandwidth usage separately. The limit can be toggled on and off without stopping the server.

Requires Bind95/NT, Freeware, from

Bind95/NT is based on the UNIX code but it is a fully functional 32bit DNS server. (Domain Name Server).

SpoonProxy (Pi-Soft Consulting, sproxy16.exe, 510KB)
(Proxy. See description below)
Enables every machine on your network to access internet resources through one internet connection thereby saving you tons of money in telephone and ISP costs. It runs in a small amount of memory (you will hardly know it’s running), yet it is an industrial-strength proxy server that is incredibly easy to set up, is fully customizable, and has excellent online help. The shareware version is fully functional indefinitely (no expire for basic proxy operations), limited only by the number of simultaneous connections it allows. So for a small home network, SpoonProxy is basically free. Supports HTTP, FTP, POP3, SMTP, SOCKS4 and 5, incoming and outgoing IP restriction, auto-dial on demand and a port mapping wizard for easy configuration.

SpoonProxy is fully-functional in this trial version and will not expire. However, it is limited to one user connection at a time until registration and SOCKS4 and SOCKS5 support will stop working after 30 days. So, for a small two machine home network, SpoonProxy is basically free.


VSOCKS Light (Paul Smith Computer Services, vsock013.zip, 333KB)
(Proxy. See description below)
A simple, FREE proxy server to allow you to connect UNLIMITED users on your LAN to the Internet through a single modem-equipped PC. Now anyone on your LAN can ‘surf the net’, or download files or read Usenet through a single Internet connection. VSOCKS Light implements a subset of the
SOCKS 4 proxy protocol. This protocol can be used to proxy any TCP/IP protocol including HTTP, FTP, TELNET and NNTP (Usenet). Common web browsers already support the SOCKS protocol, other software that doesn’t support SOCKS itself can still be used via a SOCKS proxy by using free third party software .
This software is totally Free and works for Unlimited concurrent users.

ComSocks (Linkbyte)
(Proxy. Free, limited function version)

FireDoor (Equivalence)
(Proxy.  Free, limited time trial for two users.)

Free NAT programs – Linux based

Since Linux comes with built-in Internet sharing capability, you don’t need any of these programs if you’re already running Linux.  You would use these programs if you wanted to follow the advice that you frequently get in the newsgroups to “just throw a Linux box on your network” to handle the Internet sharing chores.

attentionsml-2576261These programs are intended to be run by themselves on a dedicated computer!

new_ani-84463746/23/01 SmoothWall
Description: NAT.
Free NAT based router with DNS Proxy and DHCP LAN servers, web caching proxy, and embedded SSH Java administration. Installs from downloadable CD image. [Thnx Russ Foster & Andrew Murdoch!]

4/9/01 floppyfw
Description: NAT.
Free Debian based NAT router/firewall.  Installs from a single floppy. [Thnx David!]

1/22/00 NetBSD/i386 Firewall Project
Description: NAT.
Free NetBSD-based “firewall”. Not a lot of information about the features or number of clients you can have.

1/22/00 ClarkConnect
Description: NAT.
ClarkConnect transforms a standard PC into a full-featured Internet gateway. Version 0.6 (BETA) is a FREE pre-configured version of Red Hat 6.2.
You get the usual NAT features, plus a few extra goodies – most notably a personal webserver, built-in dynamic DNS, and Windows-based tools.

Updated 7/7/01 Coyote Linux [Thanks to Jon Gahan!]
Description: NAT
Coyote Linux is a FREE single floppy distribution of Linux that is derived from the Linux Router Project (LRP). The main difference between LRP and Coyote is the way that it is configured and maintained. There is a Windows Disk Creator that makes it easy to create a bootable floppy, but uses an earlier version of the program.

1/9/00 FREESCO (FREESCO.org) [Thanks to Rafael Diaz!]
FREESCO (stands for FREEciSCO) is a free, Linux-based replacement for commercial routers supporting up to 3 ethernet/arcnet/arlan network cards and up to 2 modems.

GNATbox Light (Global Technology Associates)
Description:Free Linux based NAT firewall/router for two users.
GNAT Box that supports up to 5 clients.
Fits on one floppy, downloaded from a floppy image from their site.
Start your PC with the floppy, a wizard asks you questions and after
2 or 3 minutes, you’re on your way.

EDGE Router  (Fire PlugComputers Inc, edge07.zip, 17.4MB)
Description:Free Linux based NAT firewall/router
Use the EDGE Project firewall to create a fully Internet connected LAN for your home or small business (or large business if you are really frugal). The Edge Firewall Router uses the ThinLinux building blocks to implement a simple edge router suitable for routing small networks via a low speed connection. E.g. dial, ISDN, cable or ADSL.

Linux Router Project
Description: Free Linux based NAT firewall/router… and more!
A networking-centric micro-distribution of Linux.  LRP is small enough to fit on a single 1.44MB floppy disk, and makes building and maintaining routers, access servers, thin servers, thin clients, network appliances, and typically embedded systems next to trivial.
Check these articles for LRP setup help.

LEAF – Linux Embedded Appliance Firewall
Description: Free Linux based NAT firewall/router
Both Oxygen and EigerStein versions of the Linux Router Project (LRP) are represented there. EigerStein is quick, easy, and relatively powerful. Oxygen is heavy-duty powerful, but a bit harder to setup.