A netmask is a 32-bit mask used to divide an IP address into subnets and specify the networks available hosts. In a netmask, two bits are always automatically assigned. For example, in 255.255.225.0, “0″ is the assigned network address; and in 255.255.255.255, “255″ is the assigned broadcast address. The 0 and 255 are always assigned and cannot be used.

Because of VM setup I couldn’t emulate this on back track but I used something similar like this in ubuntu.

That’s it

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Netenum can be used to produce lists of hosts for other programs. It’s not as powerful as other ping-sweep tools, but it’s simple. When giving a timeout, it uses ICMP echo request to find available hosts. If you don’t supply a timeout, it just prints an IP address per line, so you can use them in shell scripts.

That’s it!

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Itrace is a program that implements traceroute(1) functionality using ICMP echo request packets. Therefore, it looks like you are just pinging your target while you traceroute there. It often helps tracing behind firewalls.

Because backtrack running under virtual machine in virtualbox, I couldn’t run this under ubuntu installation.

command: itrace -i eth1 -d yahoo.com

eth1 being your ethernet device.

That’s it.

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It’s time to take a break from all those Backtrack tools review. Todays I came across this very interesting and wonderfull tool called “The Zero Install System”, It’s exactly what the name says. There is no need of installing a software in order for you to run it, even better (is it?) you don’t have to be root to install software. But first you have to install the software itself. Therein lies the irony of it.

So what is Zero install system according to their website?

“Zero Install is a way to run software without an explicit installation step. This is easier (install and run becomes just run) and safer (installation doesn’t happen as root). ”

Source (http://zero-install.sourceforge.net/faq.html#id2308662)

We can install Zero Installer from our beloved apt-get install zeroinstall-injector.

Now we will run/”install” our first zero istaller program called Zero2Desktop, which you can run on the command line shown here: http://0install.net/2007/interfaces/Zero2Desktop.xml

Next time if we want to run the program we just retype the same command, and the application window pops up, there you go you just run your first program from zero-installer:

You can find a list of application avalable for zero installer over here:

http://zero-install.sourceforge.net/injector-feeds.html

To see a list of zero installer in your system just type in 0launch -g

It’s just as simple as that.

That’s it for now.

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