An Introduction To Linux Network Security

Table of contents

An Introduction To Linux Network Security

Presentation Outline

Part I

Why do we need our systems to be secure?

What kinds of security exist?

Which computers are at risk?

Security "Pseudo-math"

TCP/IP Overview

Terminology

Ports

A few commonly used Services/Ports

Part II

More Terminology

Some Common Unix Services

How can you tell what's running on your Linux box?

Part III

Modes of Linux Services

Examining /etc/rc.d scripts

Configuring inetd

Understanding with TCP Wrappers

Configuring TCP Wrappers

xinetd, the inetd replacement

BREAK

Part IV

Bind Problems

'Ramen' Worm

New security flaws are always being discovered!

Example package updates

Part V

Check your log files!

Log file examples

Log file example

Port Scanners

Other Security Tools

Part VI

The Web

Books

Slide 38

Slide 39

Slide 40

Author: Stephan Schonberg

E-mail: stephan@swflug.org

Homepage: www.swflug.org

Further information:
This presentation is a painless introduction to common topics in LInux Network Security and was presented at SWFLUG's February 10, 2001 meeting.

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