The UK’s premier beatboxers performing live at the Google offices in London.

Here is an overview on howto use ufw the Uncomplicated Firewall:

Lets turn UFW on:
sudo ufw enable

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Ubuntu is one of the few Linux distributions out there that will not enable the root account.If you want to do something with root permission on the console you have to type sudo before the command.

sudo” means superuser do. “sudo” will prompt for “Password:”. Please specify user password

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These two scripts are very important for the system admin who regularly works with mail servers and somehow forgets to backup his system username and password! Let’s say somehow we lost the usernames and passwords of the mail server. In this case the admin has to manually create all the users and then change the passwords for all the users. Tedious job. Let’s make our life easier.
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