Do Colored Bands Mean

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Now as we saw a brief introduction of what are the ports and their operation . Learn to hear the packets sent. This action is common ly known as sniffer.

which can serve to hear?

This can help us hear the traffic passing THROUGH of our computer, and the whole network is connected to each other, because to get to your destination has to go through other sites, before achieving its goal.
A real life example of this would be when we leave our house to get to a certain place, we passed through the streets, we are in the public view, until we reach our destination.

For this there are tools we can use to listen, as

• WireShark

this tool we use to listen packet transfer.

Installing and running right :
opened terminal and put the following code:
sudo apt - get install wireshark
key and ask you to confirm the installation, wait for a moment and go and have installed wireshark .
now write again in the terminal: sudo

wireshark and you have to log in as root because it needs some permissions
and will open the following window:
Next, we go where it says Interface List and choose wlan 0 (in my case I chose this, which is wireless, you have it depending on whether you are connected via cable or network)
From there you open a sale which will be hearing packets to be transferred.
We hope a while and stop it at the top is a button that has a Tachito , we give click and stop.
stop listening and you will see the information, for example where is the place to go and what your destination.

If you click give one of them we deploy all its specific information, which is where that port is used, protocol, among others Also what do is give you the 2nd button and give it Follo TCP Stream and teach you the information being sent.
If we try to read it, we can not, as many times this comes encrypted, so you will not see, rather than the odd line.

It's your choice how you want to drive, I advise you to use to find the security of your network, use it to solve this problem, examine security issues, among others.
If you have any questions, please comment and I will gladly answer , luck and greetings.