Linux Blog

Configure Squid Proxy with ClamAV Antivirus using HAVP (HTTP Anti Virus Proxy)

HAVP (HTTP Anti Virus Proxy) is a non caching proxy which scans for viruses with ClamAV anti-virus scanner at the same time. The main aims are continuous, non-blocking downloads and smooth scanning of dynamic and password protected HTTP traffic. It can be used with squid or standalone, and it also supports transparent proxy mode.

Automatic Web Browser Proxy Configuration using PAC file

The Web Proxy Auto-Discovery Protocol (WPAD) is a method used by clients to locate a URL of a configuration file using DHCP and/or DNS discovery methods. Once detection and download of the configuration file is complete it can be executed to determine the proxy for a specified URL. The WPAD protocol only outlines the mechanism for discovering the location of this file, but the most commonly deployed configuration file format is the Proxy auto-config (PAC) format originally designed by Netscape.

A PAC file is a specialized JavaScript function definition that a browser calls to determine how requests are handled. Clients must specify (in their browser settings) the URL from which the PAC file is loaded. You can store a PAC file on web Server (or on any server in your network) and then provide the URL for this file to your clients.

Search Files / Application on Ubuntu using - Synapse

If you ever used Gnome Do / Quicksilver / Gnome Launch Box, you'll feel right at home with Synapse, if not, the only thing you need to do is run Synapse (or press Ctrl+Space to summon it), type what you're looking for, and Synapse will present you a list of items that match your query. Once you found the item you were looking for, you can perform an action on it (and these are defined by the plugins you're using). If you don't like the default action, just press Tab and search appropriate action.

Web based Internet Bandwidth and Data Transfer Monitor - BitMeter OS

BitMeter OS is a free, open-source, bandwidth monitor that works on Windows, Linux and Mac OSX. BitMeter OS keeps track of how much you use your Internet/network connection, and allows you to view this information in a variety of ways

Once BitMeter OS is installed on your computer you can monitor your connection usage either via a web browser, or by using the command line tools. The Web Interface displays various graphs and charts that show how your Internet / network connection has been used over time:

UI Application to hide Messages into Picture or Sounds files (Steganography) - SilentEye

SilentEye is a cross-platform application design for an easy use of steganography, in this case hiding messages into pictures or sounds. It provides a pretty nice interface and an easy integration of new steganography algorithm and cryptography process by using a plug-ins system.

SilentEye plug-in:
Cryptography plug-ins:
* Allow application to encrypt data before hiding them, for example using AES 128.

Format Plug-in:
* Image format plug-ins: By default a BMP plug-in is provided, which allow you to save encoded images into .bmp files. (JPEG plug-in is on its way...)
* Audio format plug-ins: WAVE plug-in provided for .wav files