How to install Google Chrome on Ubuntu 11.04

Installing Google Chrome on Ubuntu 11.04

Google Chrome can be installed in many ways, on Ubuntu 11.04. Here I’ll explain few simple methods. You can also install Chromium (almost similar to Google Chrome), it is available in Ubuntu Software Center or Synaptic Package Manager. Just follow the steps -

step #1 : Go to its official website and download the Debian Package. Google Chrome version 10.x.* is the latest one.

Download the Google Chrome for Ubuntu 11.04

step #2 : Open the saved file with Ubuntu Software Center (Right Click on the Package, then select Open With USC; click on install Button to proceed) or Use the dpkg command to install the package. To install from the command line, type the command given below and enter your login password to proceed.

sudo dpkg -i google-chrome-stable_current_i386.deb

step #3 : That’s all.. No more steps.. Enjoy surfing with Chrome.

How to encrypt your VoIP calls

Voice over IP calls are not secure

VoIP calls are transmitted over the Internet unencrypted, the data packets can easily be intercepted by a malicious hacker to record the calls and listening in, a simple packet sniffer like WireShark is all that it is needed to eavesdrop on a VoIP call, no high skills are involved.

How to encrypt VoIP calls

1. Use Zfone to add encryption to your VoIP client: Zfone works on top of your unencrypted VoiP software watching for VoiP data packets going in and out of your computer, when it finds them it ciphers the packets encrypting the VoIP call, there is also a man-in-the-middle (MiTM) attack countermeasure by displaying a short authentication string for the user to verbally compare over the phone witht the other end, Zfone is open source software using the ZRTP protocol, there are no backdoors of any kind included.

   Before considering Zfone to secure your VoIP calls have into account that the software must be installed by both callers and Zfone does not work with Skype because Skype uses a closed source protocol not compliant with the standard VoIP protocol.

   

   Zfone VoIP encryption software

2. Use a Virtual Private Network (VPN): A VPN like ibVPN can encrypt all of your internet traffic routing it through it’s encrypted OpeVPN tunnel, this will include all of your VoIP calls. Routing your VoIP calls through a VPN will slightly increase the bandwidth requirement and produce some CPU overhead.

   One benefit of using a VPN is that if your ISP or a corporate firewall is blocking VoIP calls using a VPN for VoIP will get around Internet filters, they won’t even know you are making a call, it will also get around state sponsored surveillance which is normally carried out at ISP level.

   

   Wiretapping VoIP password

3. Use VoiP software with built in encryption: Some VoIP clients like Skype have built-in encryption used to cipher VoIP data packets, if you adopt this solution to secure your phone calls, try to choose voice over IP software compatible with as many other VoIP clients as possible using open source encryption (not Skype) this will make it much harder to introduce a backdoor and it might not require the other end to have the same VoIP client installed for encryption to work.

   VoIP software using encryption: PhonerLite ; TiviPhone ; OctroTalk

Tq http://www.hacker10.com

Quick and easy E-mail encryption using Safester

Review email encryption software Safester

Safester is a free email encryption program using public and private key encryption DSA/Elgamal 2048 bits andAES 256 bits to secure your messages, the program is written using Java, it works in Windows, MAC OS and Linux.

In order to use Safester to send encrypted emails the receiver and the sender both will need to have the software installed, if the receiver doesn’t have an account when he receives an encrypted message a notification from Safester will be sent with an invitation to download the program.

After downloading and installing Safester you will need to create an account, this will create your public and private key encryption keys, the passphrase you use it is not stored in the servers and only known to you, there is no way for Safester to recover your passphrase they do not have access to it and there is no backdoor, you can set up a password recovery email system from inside your account if you want, this is optional.

E-mail encryption software Safester

All of the encrytion is carried out locally in your computer, communications with Safester servers are encrypted, in the unlikely event that someone manages to intercept the transmission you would still be protected because no data ever leaves the computer unencrypted, the messages you send and receive are archived encrypted in Safester servers in Switzerland. The free version of this email encryption service allows for a 20MB of email storage Inbox and email attachments have 512Kb maximum size, there are paid for plans for those who need personalized support, a bigger storage inbox and sending larger attachments.

I found the email client very lean in features, you can compose messages in HTML, there is a built-in spell checker for English and French, vacation auto-responder, proxy settings, address book and message folders, it is enough to get the job done but without bells and whistles.

One of Safester’s best features it is the ability of setting up double authentication using your smart phone and your passphrase to log into your email account, the One Time Authentication system works with the iPhone and Android.

Email encryption Safester advantages

• Easy maintenance free email encryption for newbies (no learning required)

• You can use any email address you like (Hotmail, Yahoo, etc)

• Email client can restrict printing and forwarding of emails

• Email client can be configured to send messages using a proxy

Email encryption Safester disadvantages

• Both, sender and receiver need to have Safester installed

• You are forced to use Safester’s own email client (which is very simple)

• Your need to trust a third party with your security

Safester review conclusion

I you are a geeky person who knows how to use GPG/PGP to encrypt emails, you will be better off using your own software for email encryption (e.g. Enigmail), this way you will not have to rely on a third party to take care of your security and you will be able to use any email client you like for encryption without forcing others to download the same software you have installed.

OpenPGP email encryption program Safester

If you have a company and do not have the time and resources to train your workers in email security and encryption, Safester is for you, anyone who knows how to send an email can use Safester, encryption could not get any easier, the great advantage Safester has over any other email encryption software it is simplicity and easy to use, Safester will save businesses money by not having to spend time on training staff.

Visit Safester homepage

Tq http://www.hacker10.com

Freeware programs for full disk encryption

Why use full disk encryption

If you encrypt your whole hard drive including your operating system you will not have to worry about wiping data, clearing the Internet browser cache, deleting temporary files and encrypting individual files, all you will have to worry about is choosing a strong passphrase that can not be broken using a brute force attack (trying dictionary words).

The only way to access a fully encrypted operating system is by getting access to the computer while it is switched on (decrytped), you will save lots of time if you decide to encrypt your full operating system, it is not difficult and there is free software for that. Windows Vista and 7 come with BitLocker Drive Encryption for full disk encryption but only the more expensive business high end editions do and it has been designed for businesses with few home user features.

Full disk encryption software without backdoor

Truecrypt (Free): It’s wizard driven menu will guide you through the whole encryption process, there are many algorithm choices, if you do not understand what they mean leave all of the default choices on, they are secure enough for everyone. Truecrypt can encrypt external devices, create virtual encrypted drives and create a hidden encrypted operating system, to be used if you are forced to give up the password.

You will find it easy to find support for Truecrypt at computer security forums and Usenet groups as it is one of the most used full disk encryption programs.

Truecrypt encryption algorithm

DiskCryptor (Free): Open source encryption software, it can encrypt partitions that have already data on them, it supports AES, Twofish and Serpent encryption algorithms, allows you to encrypt USB flash drives and external hard disks with automatic mounting, support for key files, option to place the boot loader on an external device.

DiskCryptor full disk encryption