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Chapter 26. Network Security > Tips from the Windows Pros: Building a Firewall/...

Tips from the Windows Pros: Building a Firewall/NAT Router

I've mentioned IPROUTE several times in this chapter. It's a nifty $50 shareware router program written by David Mischler, available at http://www.mischler.com. Nowadays, old 486 computers can be had for free, if you look around, and network cards can be obtained for about $15, so you can build a neat little filtering router, which can provide NAT service and can even be used to provide a shared modem connection, for under $100. Other programs such as WinGate, WinProxy, and SyGate are easier to use and configure, though. Still, I really like IPROUTE for several reasons:

  • It has no per-user licensing fee.

  • It can build a full-fledged router. I've used it to build a four-port (four LAN) router.

  • It runs on DOS, so it's simpler, cheaper to set up, and more reliable than Windows-based programs.

  • It's obscure and less likely to have exploits known to hackers.

  • It's very flexible and configurable.

  • It's really reliable. (Did I say that already?)


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