• INTRODUCTION
• Introduction
• Why use a manual on Internet security?
• Understanding basic Internet security
• GENERAL SAFETY
• Secure your computer (general)
• Internet Cafes
• Software on USB or CD
• PROTECTING YOUR PASSWORDS
• Keeping passwords safe
• Installing a Password Manager
• Encrypting Passwords with a Password Manager
• Safe Browsing
• SAFE BROWSING
• Introduction to safe browsing
• Accessing Firefox on Ubuntu
• Installing Firefox on OSX
• Installing Firefox on Windows
• Protecting your internet passwords
• Extending Firefox
• Proxy setting and FoxyProxy
• Using Tor
• BASIC EMAIL SECURITY
• Introduction to e-mail safety
• Start using Thunderbird Mail
• Setting up secure connections
• Some additional security settings
• Email Encryption
• Introduction to mail encryption (PGP)
• Installing PGP on Windows
• Installing PGP on OSX
• Installing PGP on Ubuntu
• Creating your PGP keys
• Daily PGP usage
• Webmail and PGP
• SECURING PERSONAL DATA
• Introduction to securing personal data
• Installing TrueCrypt
• Using TrueCrypt
• Setting up a hidden volume
• Securely destroying data
• SECURING REMOTE CONNECTIONS
• Introduction to securing remote connections
• Getting and testing a VPN account
• VPN on Ubuntu
• VPN on MacOSX
• VPN on Windows
• MOBILE SECURITY AND VOIP
• Introduction to Mobile Phone Security
• Secure Text Messaging on Android
• Secure voice communication
• VPN on Android phones
• Email security
• BACKGROUND INFORMATION
• FAQ
• How the Net works
• GLOSSARY

Installing Firefox on Ubuntu

Firefox is already installed on Ubuntu as part of the normal installation. If you want to install a different (most commonly newer) version of Firefox on your Ubuntu system (or other GNU/Linux systems) that is also possible and is explained below.

Accessing it is easy. If you are using an installation of Ubuntu with no changes to the default Desktop, select Applications > Internet > Firefox Web Browser:

Firefox starts and a welcome window opens:

 

If you want to upgrade the version of Firefox included with Ubuntu to the latest version,  such as a beta version or a new stable version, replacing your existing version, a detailed guide is available on the Ubuntu wiki at https://help.ubuntu.com/community/FirefoxNewVersion