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Computers > Security > Firewalls > FAQs, Help, and Tutorials

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"Personal Firewalls" are Mostly Snake-oil - http://www.samspade.org/d/firewalls.html
The author explains his opinion that a personal firewall "provides no real additional security over turning off the services that you don't use".

Attack Prevention - http://www.attackprevention.com/
A web log style site consisting of articles, papers and news relating to security information.

Beginners Guide to Firewalls and Internet Security - http://www.pcstats.com/articleview.cfm?articleID=1450
This article is intended to provide some basic guidelines for securing your computer, and a better understanding of how some of these technologies work. It is intended primarily for users of high-speed Internet connections, but most of the article is applicable to dial-up Internet users also.

Cisco PIX Firewall - Practical Guide - http://www.enterastream.com/whitepapers/cisco/pix/pix-practical-guide.html
Practical Cisco PIX guide based on hands-on experience with various PIX platforms and versions.

CPUG: The Check Point User Group - http://www.cpug.org/
A group for Check Point Firewall-1 users and implementers. Contains the Check Point Wikipedia, discussion groups and other useful information.

Firewall Software - http://firewall_software.blogspot.com/
A weblog dedicated to computer and firewall security. Contains definitions and explanations.

Firewall Tutorial - http://www.ipcortex.co.uk/wp/fw.rhtm
A fairly concise (< 4000 words) document for readers who want to know more about what firewalls do. Comprehensively covers main firewall concepts and technologies.

Firewall-net - http://www.firewall-net.com/
Provides security and firewall comparisons, compare tools, configuration tips. Also includes a user forum.

Firewalls and Internet Security: Repelling the Wily Hacker - http://www.wilyhacker.com/
Web site for the book Firewalls and Internet Security: Repelling the Wily Hacker Second Edition by William R. Cheswick, Steven M. Bellovin, and Aviel D. Rubin. Contains some sample sections and a link to the complete contents of the First Edition.

Halted Firewalls Article - http://www.samag.com/documents/s=1824/sam0201d/0201d.htm
An article from SysAdmin magazine discussion of technique and possible applications for halted firewalls.

Home PC Firewall Guide - http://www.firewallguide.com/
Features information on security, personal firewall software and Internet security appliances for dial-up and broadband-connected (xDSL and cable modem) home and SOHO computers. Also offers reviews of anti-virus and anti-Trojan products and software.

How Stuff Works: Internet Firewalls - http://www.howstuffworks.com/firewall.htm
An introductory explanation of how a firewall works and the various filtering methods used, with related links.

How-to setup an APF Firewall - http://www.theserverpages.com/articles/servers/cpanel/security/How-to_setup_an_APF_Firewall.html
A how-to that covers the basics and some advanced topics of installing and configuring the firewall, especially for CPanel users.

InfoSysSec: Firewall Security and the Internet - http://www.infosyssec.com/infosyssec/security/firew1.htm
A portal for professionals, features links, FAQs, tutorials, product information, magazine articles and downloads.

Interhack.net: Firewalls Frequently Asked Questions - http://www.interhack.net/pubs/fwfaq/
Features a background, basics, design, implementation issues, port and protocol issues. By Matt Curtin and Marcus Ranum. Documents are also available in Postscript and PDF.

IPtables Tutorial - http://iptables-tutorial.frozentux.net/iptables-tutorial.html
Tutorial and information on using iptables and netfilter in Linux for firewalling.

KnowPlace Firewalling - http://www.knowplace.org/pages/howtos/firewalling_with_netfilter_iptables.php
An overview of firewalls and security with particular reference to firewalling with Linux 2.4 and Netfilter/Iptables.

Korvan's Web - http://lehman.id.au/index.php?option=com_content&view=article&id=5:obsd-fw&catid=4:howtos&Itemid=9
How to build an OpenBSD firewall for use with Australian broadband ISPs (Telstra and Optus, cable and ADSL).

Lenny Zeltser Firewall Discussions - http://www.zeltser.com/multi-firewall/
Explores the use of various firewall techniques for protecting resources according to business requirements of multi-tier applications.

Linux Firewall and Proxy Server HOWTO - http://www.grennan.com/Firewall-HOWTO.html
White paper outlining the basics of firewall systems and giving details on setting up both, a filtering and proxy firewall on a Linux based system.

Lowth.com - http://www.lowth.com/
Linux security and related software articles and tools.

Network Security Information for developers and administrators - http://netsecinfo.blogspot.com
Technical information on network security technologies - Firewall, IPS, IPsec VPN, Anti Virus, Anti Spam. This site also contains extensive information on TR-069 technology.

Network Security, Filters and Firewalls - http://www.acm.org/crossroads/xrds2-1/security.html
This article is a general introduction to network security issues and solutions in the Internet; emphasis is placed on route filters and firewalls. It is intended as an overview. Some knowledge of IP networking is assumed, although not crucial.

Outpost Firewall - The Webhiker's Guide - http://www.outpostfirewall.com/guide/
Includes guide to Outpost Firewall, with information for both inexperienced and expert users.

Packet filter (pf) mailing list - http://www.benzedrine.cx/mailinglist.html
Mailing list for the pf firewall provided as part of the OpenBSD kernel.

Routing/Firewalls with Linux - http://hnsg.net/tutorials/routing_firewall.html
A brief straightforward tutorial on creating a simple routing firewall using Linux and netfilter (iptables).

Samba Authenticated Gateway - http://www.tldp.org/HOWTO/Samba-Authenticated-Gateway-HOWTO.html
This documents intends to show how to build a Firewall/Gateway with rules set on user basis having the users authenticated by a Samba Primary Domain Controller

Securepoint Firewall Archives - http://securepoint.com/lists/html/
Searchable archives of the mailing list and forums on a range of different firewalls and related items.

SecurityDocs Firewall Reference - http://www.securitydocs.com/Firewall
A collection of whitepapers and other documents on various aspects of firewalls such as what they are, how to choose one, and proper installation.

Shields Up: Personal Firewalls - http://grc.com/su-firewalls.htm
Features FAQs, reviews, ratings, white papers, and tools to test Internet security and firewall vulnerabilities by Steve Gibson.

Solaris 2.6 Firewall Example Installation and Configuration - http://www.roble.com/docs/secure_solaris.html
Details the procedure to configure a secure firewall on the Sun Solaris platform.

Sunshadowz Security Tips - http://www.sunshadowz.com/
Home computer security tips for firewalls, anti-virus, spyware removal, data encryption and intrusion detection, identity theft, debit and credit card scams and child safety online.

The Firewall FAQ - http://www.ists.dartmouth.edu/IRIA/knowledge_base/firewall_faq.htm
Dartmouth College Institute for Security Technology Studies firewall FAQ and other information and research documents in related areas.

Vicomsoft Firewall Q&A - http://www.vicomsoft.com/knowledge/reference/firewalls1.html
A whitepaper on relevant firewall questions and answers. The knowledge of this subject relates to firewalls in general use, and stems from NAT and proxy firewall technology experience. Welcomes feedback and comments from any readers on the usefulness or content.

Workable passive FTP connections through a firewall - http://www.theserverpages.com/articles/servers/cpanel/tweaks/Getting_passive_FTP_connections_to_work_through_a_firewall_properly.html
A general article on enabling passive FTP connections through a firewall. Examples used in the article discuss the APF firewall and Pure-FTPD ftp server.

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