Time for action – heading

1. Action 1
2. Action 2
3. Action 3

Instructions often need some extra explanation so that they make sense, so they are followed with:

What just happened?

This heading explains the working of tasks or instructions that you have just completed.

You will also find some other learning aids in the book, including:

Pop quiz – heading

These are short multiple choice questions intended to help you test your own understanding.

Have a go hero – heading

These set practical challenges and give you ideas for experimenting with what you have learned.

Code words in text are shown as follows: "The rlm_sqlcounter module allows defining various counters (time or data based) to keep track of a user's usage."

A block of code is set as follows:

if(control:Auth-Type == 'PAP'){ 
    update reply { 
       Reply-Message := '/bin/echo We are using %{control:Auth-Type}'
    }
}

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:

if(control:Auth-Type == 'PAP'){ 
    update reply { 
       Reply-Message := '/bin/echo We are using %{control:Auth-Type}'
    }
}

Any command-line input or output is written as follows:

INSERT INTO radcheck (username, attribute, op, value) VALUES ('bob', 'Cleartext-Password', ':=', 'passbob');

New terms and important words are shown in bold. Words that you see on the screen, in menus or dialog boxes for example, appear in the text like this: "clicking the Next button moves you to the next screen".

Note

Warnings or important notes appear in a box like this.

Tip

Tips and tricks appear like this.