Block Bot Attacks

If you have a machine that is exposed to external network then there is a chance that some bot is poking your machine and you need to harden all entry points of your machine. fail2ban is a small program that monitors all your authentication logs for failed login attempts and blocks the bots depending on the thresholds that you specified in configuration file.

Installation

sudo apt-get -y install fail2ban

fail2ban blocks bots for only 600 seconds. To change this setting you have to open /etc/fail2ban/jail.conf and change the configuration option bantime. And restart fail2ban using following command.

sudo /etc/init.d/fail2ban restart

Install Bleeding Edge Wine

Fortunately winehq maintains an ubuntu repo that contains deb packages of latest wine development releases. Presently the latest version is 1.1.4. This latest version contains cutting edge DirectX support and other improvements. Make a note that these deb packages may not be properly tested and you may face occasional breakage in functionality of wine.

Installation

Execute following command to add apt trust keys.

wget -q http://wine.budgetdedicated.com/apt/387EE263.gpg -O- | sudo apt-key add -

Execute following command to add new wine repository.

sudo wget http://wine.budgetdedicated.com/apt/sources.list.d/hardy.list -O /etc/apt/sources.list.d/winehq.list

Update apt sources.

sudo apt-get update

Now if wine is already installed then do an upgrade

sudo apt-get -y upgrade

Other wise install wine

sudo apt-get -y install wine

Check wine version by issuing following command.

wine --version

Ubuntu JeOS VM Builder

This ubuntu wiki page describes steps for setting up JeOS virtual machines with out using iso images. Please test these steps and give your feedback to ubuntu developers.

Ubuntu JeOS VM Builder

subdownloader - Download Subtitles

subdownloader running on ubuntu

Subdownloader 2.0 is one fine automatic subtitle downloader. Its written in QT4 using python and has very friendly user interface.

Installation

Subdownloader deb packages are not yet included in repo but you can download them from Subdownload 2.0 launchpad page.

Download & save two deb packages subdownloader-cli-xxx_all.deb and subdownloader_xxx_all.deb packages to desktop. Now open terminal and change to Desktop directory and issue following command.

sudo dpkg -i sub*.deb

Apt will complain telling that you have some unmet dependencies and will exit. Execute following command to install those dependencies along with subdownloader.

sudo apt-get -f install 

Usage

Now launch subdownloader by issuing following command in terminal.

subdownloader

Now select directory that contains movies and subdownloader will automatically search for subtitles on net. Select the subtitles that you want and click Download button to start downloading subtitles. Enjoy.

Sharing Files Using Apache

Apache is pretty useful for sharing files on network particularly on LAN. Here is how to map an external folder to an url on your apache server. Lets assume your user name as bob and the path of the folder that you want to share is /home/bob/downloads. And you want to access contents of this folder at url /downloads.

Change directory to /etc/apache2/sites-enabled. And create file named downloads with the following contents.

Alias "/downloads" "/home/bob/downloads"
<Directory "/home/bob/downloads">
    AllowOverride None
    Options Indexes
    Order allow,deny
    Allow from all
</Directory>

Save the file and close it. Now restart the apache by issuing following command.

sudo apache2ctl restart

Now test everything is working as expected by going to following url in your browser.

http://localhost/downloads