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Posted Aug 17, 2006
Authored by Fernando Gont | Site

Whitepaper titled Filtering Of ICMP Error Messages.

tags | paper
MD5 | d0a9291555fea0ba236126a45e33f2c9
Posted Jun 17, 2003
Authored by Troy Thompson | Site

Relevant Technologies product review paper on InsideOut Firewall Reporter by Stonylake Solutions. This product is a Java-based server application that runs on both Windows and Linux and has a demo version available.

tags | paper, java
systems | linux, windows
MD5 | 1bc7034a4ca43e83f0832aee896d6f44
Posted Nov 25, 2002
Authored by wanvadder, flyguy | Site

Combating reverse telnet using OpenBSD Packet Filter (pf) - This paper goes into detail on how to set up a firewall properly to disallow outbound traffic from reverse telnet attacks from compromised machines.

tags | paper
systems | openbsd
MD5 | a17fbb20af199726341779197070c7db
Posted Sep 24, 2002
Authored by Lee Bowyer | Site

Bypassing firewalls through protocol stenography - You can often bypass firewalls by using trojans that send commands over port 80.

tags | paper, trojan, protocol
MD5 | dbfc62d0887c5defc5faa2fa4e884a30
Posted Jun 25, 2002
Authored by Maarten Van Horenbeeck

OS/2 Packet Filtering - OS/2 machines are good for firewalls and the packet filtering code is not documented.

tags | paper
MD5 | 5c5c3f6c11f6c6fe60369f0d3478b778
Posted Sep 28, 2001
Authored by Marty Schlacter | Site

This howto walks you through building a FreeBSD-STABLE firewall with IPFILTER. This is a checklist that walks you through the entire process from beginning to end: installing FreeBSD-stable, recompiling the kernel, OpenSSH security, TCP-wrappers, VESA video modes, and special syslog logging for your firewall.

Changes: Updated for FreeBSD-4.4-STABLE.
tags | paper, kernel, tcp
systems | freebsd
MD5 | 85a429380d1944e843d563d87426900e
Posted Feb 6, 2001
Authored by Brad Spengler

How to use Iptables - Explains the new features, how to use them, how to write rulesets, and includes a sample firewall script.

tags | paper
MD5 | 19d436b9ffb68b7a7ba5150f79f4b6a6
Posted Sep 1, 2000
Authored by Dug Song, John McDonald, Thomas Lopatic

A Stateful Inspection of FireWall-1 - In this advisory we summarize our findings from BlackHat 2000 on Checkpoint Firewall-1. It is susceptible to several trivial attacks against its inter-module authentication protocols, IP address verification has flaws, FWN1 and FWA1 is vulnerable to a replay attack, Fastmode vulnerabilities, FWZ Encapsulation vulnerabilities, and Stateful Inspection problems, and much more. Included in the tarball is the presentation in two formats, the technical documentation for the vulnerabilities, and the source code used in the demonstation.

tags | paper, vulnerability, protocol
MD5 | 91477466f1f877e3f89271565b27a371
Posted Jun 15, 2000
Authored by Brad Spengler

Linux Firewalling - Insights and Explainations. Covers basic IPchains firewall building, advanced IPchains firewalling, and linux firewall related insights and recommendations on which traffic to allow.

tags | paper
systems | linux
MD5 | 7ff543a1e829f9edeb3ec8965ad7c2b4
Posted Jan 26, 2000

Benchmarking Terminology for Firewall Performance - This document defines terms used in measuring the performance of firewalls. It extends the terminology already used for benchmarking routers and switches with definitions specific to firewalls.

tags | paper
MD5 | 407deba492a227b099a7b51305db26ca
Posted Jan 16, 2000
Authored by Robert Graham

This document answers the question: I've seen <something> on my firewall; what does it mean? Firewall administrators regularly see strange behaviour showing up in their logfiles. This document describes some of the common things seen on these firewalls, and what they mean. Note that this document is intended both for owners of personal firewalls as well as corporate firewalls. Version 0.3.0. (Jan 15, 2000)

tags | paper
MD5 | 9ed1cee16b9f53de8927e87dcf9972ea
Posted Dec 10, 1999
Authored by Robert Graham

FAQ: Firewall Admins Guide to Porn version 1.0.1 (Jan 15, 2000). One of the more frequent problem security administrators will face is porn. It is a popular Internet application, and even when restrictions are put into place, users find ways of getting around them. At the same time, users tend to be clueless as to the knowledge firewall admins have of their surfing habits. Every administrator of a large company that I know of has had to confront this issue, but not much is discussed about the topic in the literature. This document is intended as a guide for firewall admins in this area.

tags | paper
MD5 | 5759a7d609d42114b58b3b2b846944fa
Posted Dec 10, 1999
Authored by Lance Spitzner | Site

Building Your Firewall Rulebase - One of the largest risks with a firewall is a misconfigured rulebase. The most expenseive firewall in the world does not help you if you have a rule misconfigured. "Building Your Firewall Rulebase" helps to address this problem. The paper focuses on the concepts of how to build a secure rulebase. It goes step by step through the design process, explaining each rule and it signifigance. The paper is focused for beginner/intermediate firewall admins, but even the gurus can hopefully learn a trick or two (I know I did).

tags | paper
MD5 | e4e67de0308f72fae3140eff9e739f6f
Posted Nov 14, 1999
Authored by Larry W. Cashdollar | Site

How to build a BSD firewall using ipfilter. Covers everything from kernel config to allowing traffic.

tags | paper, kernel
systems | bsd
MD5 | 8db290dcfa35c0e52d7b2abaa54ab4e9
Posted Oct 1, 1999

Packet Filtering in an IP Router: A description of how the packet filtering facility in the Telebit NetBlazer was designed and developed.

tags | paper
MD5 | 58e61f4346e87952f444e7a559896c9f
Posted Oct 1, 1999

A Network Firewall: A description of Digital Equipment Corporation's network firewall between its corporate network and the Internet.

tags | paper
MD5 | dbfad3c3cee7f545b15a7077c34803ee
Posted Oct 1, 1999

Thinking About Firewalls: A description of some of the considerations and trade-offs in designing network firewalls.

tags | paper
MD5 | 49af2ebc54d54cdde439690005372203
Posted Oct 1, 1999

An Internet Gatekeeper: A description of how to construct an Internet firewall

tags | paper
MD5 | 1ac2292a38d0cda4c96735f5b1bca241
Posted Oct 1, 1999

A Network Perimeter With Secure External Access: A description of the firewall in use at whitehousegov

tags | paper
MD5 | feb5e7fa94013ad248e85b1d018ed858
Posted Oct 1, 1999

Packets Found on an Internet: A description of the types of packets, particularly the anomalous ones, that appeared at the AT&T firewall

tags | paper
MD5 | 1d509af86b49369f0076478d377e2117
Posted Oct 1, 1999

Simple and Flexible Datagram Access Controls for Unix-based Gateways: A description of the screend packet filtering system

tags | paper
systems | unix
MD5 | 42c625ebde081fa97ffbc75c8bef2824
Posted Oct 1, 1999

TCP Wrapper: Network Monitoring, Access Control, and Booby Traps (Text): A description of the author's tcpwrapper software

tags | paper, tcp
MD5 | ca952f2a01017341e9927799c5e28035
Posted Oct 1, 1999

A Toolkit and Methods for Internet Firewalls: A description of the Trusted Information Systems Firewall Toolkit

tags | paper
MD5 | e892b4d7daa511835dfaf991e839786a
Posted Oct 1, 1999

An Architectural Overview of UNIX Network Security: A description of a number of UNIX-related components of network security, particularly as they pertain to firewalls

tags | paper
systems | unix
MD5 | 3c2da4e4019173d9b7297acb8686a6bf
Posted Oct 1, 1999

X Through the Firewall, and Other Application Relays: A description of how to create application-specifc relays to pass traffic through a network firewall

tags | paper
MD5 | b0c5e9455c240ba8eae64f3f7426a8e7
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