Linux Security


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Table of contents

Title

Introduction

Introduction - Securing your base system

Remove Excess Services

Keep your system up to date

Lock system down with TCPWrappers

Lock system down with tcpwrappers (Continued)

Use SSH/SSL

Introduction: Implementing a firewall with NetFilter

Introduction to Netfilter

Example NetFilter configuration

Allowing an incoming service

Implementing a DMZ

Implementing a DMZ (continued)

Example Network Layout with a VPN

Testing your security

Testing: NMAP

NMAP: Screenshot

Testing: SAINT

SAINT: Main Screen

SAINT: Scan Results

Monitoring your network

It's important

Swatch

Swatch - Example SwatchRC

Netsaint

Netsaint Demo

Using SNORT/ACID

ACID Screenshot - Main Page

ACID Screenshot - Query Results

References

References continued

Author: Nate Carlson

E-mail: natecars@real-time.com