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Firewalls
We have thousands of posts on a wide variety of open source and security topics, conveniently organized for searching or just browsing.



Building a Secure Gatway System  18 June 2000 
Source: LinuxGazette - Posted by Dave Wreski   
This LG article discusses configuring an old 486 machine as a secure Internet gateway with two ethernet interfaces. "When finished this will be a very lean install, weighing in at about 130 MB plus swap, there will be no X . . .

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Securing Your Home Network With the Edge Firewall  10 June 2000 
Source: O'Reilly Network - Posted by Dave Wreski   
This is an introductory document describing firewalls and performing an installation of TheEdge FirePlug. "Edge FirePlug is a very well-designed firewall solution from FirePlug Computers, Inc. in Vancouver, BC. One of the reasons I chose Edge FirePlug (just called . . .

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Dialup firewalling with FreeBSD  08 June 2000 
Source: FreeBSD.org--   - Posted by LinuxSecurity.com Team   
This article documents how to setup a firewall using a PPP dialup with FreeBSD and IPFW, and specifically with firewalling over a dialup with a dynamically assigned IP address. It does not cover how to setup a standard PPP . . .

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An Introduction to IP Masquerading - Part 2  02 June 2000 
Source: Linux.com --   - Posted by LinuxSecurity.com Team   
In mid-May, Linux.com released Part 1 - 'An Introduction to IP Masquerading.' Here is 2nd and final part of this article. "Now that relatively high-bandwidth Internet connections are becoming both commonplace and inexpensive, cable modem and DSL users wanting . . .

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Firewall placement  30 May 2000 
Source: NWFusion - Posted by LinuxSecurity.com Team   
We are linking our company to the Internet, and we are discussing the placement of the firewall. I feel that the firewall should reside in-house for the best security; others want to put the firewall at our ISP and run . . .

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Running a BSD-based Firewall  28 May 2000 
Source: BSDToday - Posted by LinuxSecurity.com Team   
"... there are two popular free firewalls we could pick from: IP Filter and IP Firewall. IP Firewall is a fine product that I have used in the past with but at the time it could not keep state. A . . .

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Running a BSD-based Firewall  25 May 2000 
Source: BSDToday    - Posted by LinuxSecurity.com Team   
Internet security is currently a hot topic. Because of that, many smaller networks are turning toward firewalls to give them some protection. Many of these networks do not have the money to pay for a commercial firewall product, so they . . .

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An Introduction to IP Masquerading - Part 1  17 May 2000 
Source: Linux.com - Posted by LinuxSecurity.com Team   
Now that relatively high-bandwidth Internet connections are becoming both commonplace and inexpensive, cable modem and DSL users wanting to put more than one computer on the Internet find that their Internet service provider will not allow them to do so. . . .

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Firewalls For Home Users Are Essential  08 May 2000 
Source: Byte.com - Posted by LinuxSecurity.com Team   
This article is a basic introduction to firewalls. "Firewalls are an important part of an infrastructure-based security approach. Generally speaking, a firewall is a computer or a network appliance that runs special software that lets network traffic (in the case . . .

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Building a Linux Bunker: Basic Firewalling  08 May 2000 
Source: SecurityFocus - Posted by LinuxSecurity.com Team   
This article presents a way to convert any spare machine you have into a useful security gateway for your network, utilizing Network Address Translation (NAT), and the firewalling features present in Linux. This article will assume you have already read . . .

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