book

Practical Linux Security Cookbook

by Tajinder Kalsi

April 2016

Beginner to intermediate

276 pages

5h 32m

English

Packt Publishing

Read now

Unlock full access

eBooks, discount offers, and moreWhy Subscribe?
What this book covers

Getting readyHow to do it…How it works…There's more…See also
Downloading the example codeDownloading the color images of this bookErrataPiracyQuestions
Introduction
Developing a security policy
How to do it…How it works…
How to do it…How it works…There's more…
Getting readyHow to do it…How it works…See also
Getting readyHow to do it…How it works…
Getting readyHow to do it…How it works…There's more…Vulnerability assessment
Getting readyHow to do it…How it works…See also
Getting readyHow to do it…How it worksThere's more…Null or default passwordsIP spoofingEavesdroppingService vulnerabilitiesDenial of Service (DoS) attack
Introduction
Getting readyHow to do it…How it works…
Getting readyHow to do it…How it works…
Getting readyHow to do it…How it works…
Getting readyHow to do it…How it works…
Getting readyHow to do it…How it worksThere's more…
How to do it…
Viewing file and directory details using the ls commandGetting readyHow to do it…How it works…
Getting readyHow to do it…How it works…There's more...
Getting readyHow to do it…There's more…
Getting ready…How it works…There's more…
Getting readyHow to do it…How it works…
User authentication and loggingGetting StartedHow to do it...How it works...
Getting readyHow to do it...How it works...
Getting startedHow to do it?How it works...
Getting readyHow to do it…How it works...There's more...
Getting started...How to do it...How it works...
Remote server/host access using SSHGetting readyHow to do it…How it works…
Getting readyHow to do it…How it works…There's more…
Getting readyHow to do it...How it works...
Getting readyHow to do it...How it works...
Getting readyHow to do it...How it works...
Managing the TCP/IP networkGetting readyHow to do it...How it works...
Getting ReadyHow to do it...How it works...
Getting ReadyHow to do it...How it works...
Getting ReadyHow to do it...How it works...
Getting ReadyHow to do it?How it works...
Linux sXIDGetting ReadyHow to do it...How it works...
Getting ReadyHow to do it?How it works...
Getting ReadyHow to do it...How it works...
Getting ReadyHow to do it...How it works...
Getting ReadyHow to do it...How it works...
Getting readyHow to do it...How it works...
Kali LinuxGetting readyHow to do it...How it works...
Getting readyHow to do it...How it works...
Getting readyHow to do it...How it works...
Getting readyHow to do it...How it works...
Getting readyHow to do it?How it works...
Understanding the bash vulnerability through ShellshockGetting ReadyHow to do it…How it works…
Getting ReadyHow to do it…How it works…
Getting readyHow to do it…How it works…
Getting readyHow to do it...How it works...
Viewing and managing log files using LogcheckGetting readyHow to do it…How it works…
Getting readyHow to do it…How it works…
Getting readyHow to do it…How it works…
Getting readyHow to do it…How it works…
Getting readyHow to do it…How it works
Getting readyHow to do it…How it works
Getting readyHow to do it…How it works
Getting readyHow to do it…How it works
Getting readyHow to do it…How it works

Content preview from Practical Linux Security Cookbook

Chapter 4. Local Authentication in Linux

In this chapter, we will discuss the following topics:

User authentication and logging
Limiting the login capabilities of users
Monitoring user activity using acct
Login authentication using a USB device and PAM
Defining user authorization controls

User authentication and logging

One of the major aspects of user authentication is monitoring the users of the system. There are various ways to keep track of all the successful and failed login attempts made by a user in Linux.

Getting Started

The Linux system maintains a log of all login attempts by different accounts in the system. These logs are all located at /var/log/.

How to do it...

Linux has many ways to help an administrator to view the logs, both through a graphical ...

Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.

Start your free trial