What is SIGINT?

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Katılımcı Üye
21 Eki 2015
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Signal Intelligence

(SIGINT) What is it?



With the development of technology, there are a lot of new devices, new business areas and new departments have been emerged. As technology develops, we need more intelligence and its purpose is to collect information from signals. The name of this section is Signal Intelligence (SIGINT). The type of intelligence, as evident from its name. It aims to collect information through signals. SIGINT is a field related to detecting and collecting information about communication tools (radio etc.) and signal emitting devices.


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The Usage and Purpose of SIGINT


SIGINT is mainly used in the military field. It aims to gain important information by infiltrating the enemy's radio/wirelesss and listening to radio conversations. With the SIGINT, you can find the enemy's strategy and you will have more advantage over your enemy by creating a new strategic plan for your army according to their strategy. In short the SIGINT has a huge role in the military field and is an indispensable species for intelligence. We know that SIGINT is mainly used in the military field and now let's look at the military departments that use SIGINT in the military field.


SIGINT at Sea


The intelligence can be made from the signal information in the sea. Some armies have SIGINT areas, although not many in the world. Sea SIGINT is made in a control room on the ships, they analyze the signal found and try to get information from that signal.


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SIGINT in Aviation


SIGINT made with aviation tries to get the information on the signal and also tries to find the l0cation of the signal. Even these two properties are very important for the military field. Air SIGINT can be performed over the UAV, it can provide very important information for air and land operations then the operation can be completed successfully.


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SIGINT on Land


On land SIGINT is done via a control center that looks like a truck and has satellites on it. This can get important information for land operations.


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SIGINT in Turkey


Turkey which saw that many armies in the world switch to signal intelligence then took the first steps of SIGINT under the name of Generalstaff Electronic Systems on 1st of January, 2012. On 15st of May 2012, this changed name to the current name. The Directorate of Signal Intelligence. It is carried out by SIGINT airline in Turkey. UAVs and reconnaissance aircraft AWACS play a very important role for SIGINT in Turkey.


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AWACS reconnaissance aircraft has an important role in SIGINT


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Official logo of the Directorate of Signal Intelligence that makes SIGINT in Turkey.


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What is SigintOS?


SigintOS (SIGINT Operating System) is a Linux distribution system created for people who want to make signal intelligence. The system has its own tools under the name of SigintOS tool. Thanks to this system, it becomes easier to make signal intelligence. So, what can we do with this?
Here are a few examples;

*Finding the positions of the ships.

*Mixing frequencies with the help of jammer.

*Monitoring aircraft signals.

*Learning how radars work.

*Ability to analyze and monitor the spread of signals.

*Ability to monitor SMS signals of GSM companies.

*You can make signal intelligence such as monitoring the traffic flow of GSM companies.



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Usage of SigintOS (Listening the signals through IP connection)


In order to fully understand what SigintOs does, i will explain you the SigintOS system with the IP connection wiretapping tool. I'll do this through with my network (localhost) so we'll listen the signal of my IP address. First of all we open our terminal, when you look at the terminal you can see how similar it is to the Ubuntu terminal. After opening our terminal, let's enter our first command.


Kod:
ifconfig


We have learned our own IP address with the ifconfig command.


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As you can see our IP address has appeared. Now we need to connect this IP address to rtl_tcp (the area where we will listen the signal). Let’s do this now.


Kod:
rtl_tcp -a 192.168.1.105 (Ip adresimiz)


We connect to rtl_tcp with this command. This process can take between 1 and 5 minutes.


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We are waiting for our IP address to be connected, when our IP address is connected to rtl_tcp, we will see a screen like this:


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Now, we will listen the signal of the IP address on this screen. There is no signal when we look to the screen, for now. Now we need to make a few settings on this rtl_tcp screen and for this we enter the settings section at the top of the screen.


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Device part must be RTL-SDR Spectrum Serve. Currently our device setting is like this as well. The device string part will be rtl_tcp=198.168.1.105 (Our own IP address or target's IP address): 1234. After making the necessary settings, we say "OK" and continue our process. Now we click the play button on the upper left side of the screen.


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As you can see, there are a few movements in the signals. However, these signals will come to us without any sound. To solve this the necessary setting is:
Device part RTL-SDR Spectrum Serve
Device string part rtl_tcp = 198.168.1.105 (Our own IP address or target's IP address): 1234
Well, we need to make the settings again. After making the necessary settings for the second time, we press the play button again.


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As you can see in the image, there are positive movements in the signals and also the sound signals come to us in a very good way. However, in some cases this sound is either very bad or not heard at all. You may need to change the khz frequencies for this. Remember that there is no rule that your every thing you do will give 100% results, it may give you negative results.


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